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Cranfield University
1.
Lusiola, Tony.
Synthesis and processing of KNN powders and thick films for MEMS devices.
Degree: PhD, 2012, Cranfield University
URL: http://dspace.lib.cranfield.ac.uk/handle/1826/7846
► Pb-free piezoelectric materials have grown in importance through increased environmental concern related to the presence of Pb and the subsequent legislation that has arisen including…
(more)
▼ Pb-free piezoelectric materials have grown in importance through increased environmental concern related to the presence of Pb and the subsequent legislation that has arisen including directives such as Waste Electrical and Electronic Equipment (WEEE) and the Restriction of Hazardous Substances Directive (RoHS). While much progress has been made on producing Pb-free bulk materials, the need to integrate these next generation Pb-free piezoelectric materials with substrates to form functional micro devices has received less attention and raises a number of challenges. With respect to the high temperature mixed oxide synthesis method, a simple, cost effective and robust low temperature molten hydroxide synthesis (MHS) method derived from the molten salt synthesis (MSS) method, has been developed to produce K0.5Na0.5NbO3 (KNN) small grain powders and is a method that lends itself easily to industrial scale up. A powder/sol gel composite ink film forming technique has been used to produce KNN thick films on silicon substrates. Characterisation of the produced films has shown the films to exhibit piezoelectric coefficients for un-doped material in the region of 30pC/N. The work will report on the Na ion favouring mechanism of the MSS and the related mechanism of the MHS. The work will also report on the dielectric and piezoelectric characteristics of initial KNN thick films produced and an investigation into use of dopants and process modification to improve the KNN thick film’s characteristics.
Subjects/Keywords: Potassium sodium niobate; Pb-free; Si wafers; Piezoelectric coefficient; Dielectric loss
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Lusiola, T. (2012). Synthesis and processing of KNN powders and thick films for MEMS devices. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/7846
Chicago Manual of Style (16th Edition):
Lusiola, Tony. “Synthesis and processing of KNN powders and thick films for MEMS devices.” 2012. Doctoral Dissertation, Cranfield University. Accessed February 21, 2019.
http://dspace.lib.cranfield.ac.uk/handle/1826/7846.
MLA Handbook (7th Edition):
Lusiola, Tony. “Synthesis and processing of KNN powders and thick films for MEMS devices.” 2012. Web. 21 Feb 2019.
Vancouver:
Lusiola T. Synthesis and processing of KNN powders and thick films for MEMS devices. [Internet] [Doctoral dissertation]. Cranfield University; 2012. [cited 2019 Feb 21].
Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/7846.
Council of Science Editors:
Lusiola T. Synthesis and processing of KNN powders and thick films for MEMS devices. [Doctoral Dissertation]. Cranfield University; 2012. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/7846

University of St. Andrews
2.
Peel, Martin D.
A crystallographic study of group I niobate perovskites
.
Degree: 2015, University of St. Andrews
URL: http://hdl.handle.net/10023/6530
► In this work, X-ray and neutron powder diffraction experiments and complementary solid-state NMR spectroscopy are used to characterise NaNbO₃-based perovskite phases. Samples of NaNbO₃, KₓNa₁₋ₓNbO₃…
(more)
▼ In this work, X-ray and neutron powder diffraction experiments and complementary solid-state NMR spectroscopy are used to characterise NaNbO₃-based perovskite phases. Samples of NaNbO₃, KₓNa₁₋ₓNbO₃ and LiₓNa₁₋ₓNbO₃ are synthesised using a variety of techniques and subsequently characterised. For NaNbO₃, it is observed that at least two room temperature perovskite phases can co-exist, P and Q, and that each phase can be formed exclusively by manipulating the synthetic approach utilised. Phase Q can also be formed by the substitution of a small amount of K⁺ or Li⁺ for Na⁺. The room temperature phases of these materials are also analysed using NMR spectroscopy and X-ray diffraction. It is found that, for KₓNa₁₋ₓNbO₃, preferential A-site substitution of K⁺ for Na⁺ may occur, and this observation is supported using a range of NMR techniques and density functional theory calculations. The high-temperature phase behaviour of NaNbO₃ and KₓNa₁₋ₓNbO₃ (x = 0.03 to 0.08) is analysed using high-resolution neutron and X-ray powder diffraction to determine when phase changes occur and to characterise each phase. Characterisation of these materials is supported used complementary symmetry mode analysis. For the LiₓNa₁₋ₓNbO₃ perovskite system, complex phase behaviour is observed at room temperature. High-resolution neutron powder diffraction data shows that, over the range 0.08 < x < 0.20, phase Q may co-exist with a rhombohedral phase, with the proportions of the two highly dependent upon the synthetic conditions used. Furthermore, using X-ray diffraction and NMR spectroscopy, phase Q is shown to undergo a crystal-to-crystal transition to the rhombohedral phase. For higher values of x, two compositionally-distinct rhombohedral phases are formed, termed Na-R3c and Li-R3c, as determined from neutron powder diffraction data.
Advisors/Committee Members: Ashbrook, Sharon E (advisor).
Subjects/Keywords: Perovskite;
Solid-state NMR;
X-ray diffraction;
Neutron diffraction;
Sodium niobate
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Peel, M. D. (2015). A crystallographic study of group I niobate perovskites
. (Thesis). University of St. Andrews. Retrieved from http://hdl.handle.net/10023/6530
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Peel, Martin D. “A crystallographic study of group I niobate perovskites
.” 2015. Thesis, University of St. Andrews. Accessed February 21, 2019.
http://hdl.handle.net/10023/6530.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Peel, Martin D. “A crystallographic study of group I niobate perovskites
.” 2015. Web. 21 Feb 2019.
Vancouver:
Peel MD. A crystallographic study of group I niobate perovskites
. [Internet] [Thesis]. University of St. Andrews; 2015. [cited 2019 Feb 21].
Available from: http://hdl.handle.net/10023/6530.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Peel MD. A crystallographic study of group I niobate perovskites
. [Thesis]. University of St. Andrews; 2015. Available from: http://hdl.handle.net/10023/6530
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cranfield University
3.
Lusiola, Tony.
Synthesis and processing of KNN powders and thick films for MEMS devices.
Degree: PhD, 2012, Cranfield University
URL: http://dspace.lib.cranfield.ac.uk/handle/1826/7846
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.567862
► Pb-free piezoelectric materials have grown in importance through increased environmental concern related to the presence of Pb and the subsequent legislation that has arisen including…
(more)
▼ Pb-free piezoelectric materials have grown in importance through increased environmental concern related to the presence of Pb and the subsequent legislation that has arisen including directives such as Waste Electrical and Electronic Equipment (WEEE) and the Restriction of Hazardous Substances Directive (RoHS). While much progress has been made on producing Pb-free bulk materials, the need to integrate these next generation Pb-free piezoelectric materials with substrates to form functional micro devices has received less attention and raises a number of challenges. With respect to the high temperature mixed oxide synthesis method, a simple, cost effective and robust low temperature molten hydroxide synthesis (MHS) method derived from the molten salt synthesis (MSS) method, has been developed to produce K0.5Na0.5NbO3 (KNN) small grain powders and is a method that lends itself easily to industrial scale up. A powder/sol gel composite ink film forming technique has been used to produce KNN thick films on silicon substrates. Characterisation of the produced films has shown the films to exhibit piezoelectric coefficients for un-doped material in the region of 30pC/N. The work will report on the Na ion favouring mechanism of the MSS and the related mechanism of the MHS. The work will also report on the dielectric and piezoelectric characteristics of initial KNN thick films produced and an investigation into use of dopants and process modification to improve the KNN thick film’s characteristics.
Subjects/Keywords: 620.1; Potassium sodium niobate; Pb-free; Si wafers; Piezoelectric coefficient; Dielectric loss
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lusiola, T. (2012). Synthesis and processing of KNN powders and thick films for MEMS devices. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/7846 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.567862
Chicago Manual of Style (16th Edition):
Lusiola, Tony. “Synthesis and processing of KNN powders and thick films for MEMS devices.” 2012. Doctoral Dissertation, Cranfield University. Accessed February 21, 2019.
http://dspace.lib.cranfield.ac.uk/handle/1826/7846 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.567862.
MLA Handbook (7th Edition):
Lusiola, Tony. “Synthesis and processing of KNN powders and thick films for MEMS devices.” 2012. Web. 21 Feb 2019.
Vancouver:
Lusiola T. Synthesis and processing of KNN powders and thick films for MEMS devices. [Internet] [Doctoral dissertation]. Cranfield University; 2012. [cited 2019 Feb 21].
Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/7846 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.567862.
Council of Science Editors:
Lusiola T. Synthesis and processing of KNN powders and thick films for MEMS devices. [Doctoral Dissertation]. Cranfield University; 2012. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/7846 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.567862

Laurentian University
4.
Singh, Jaspreet.
Numerical analysis of porous piezoelectric materials
.
Degree: 2015, Laurentian University
URL: https://zone.biblio.laurentian.ca/dspace/handle/10219/2297
► Three-dimensional finite element models based on unit-cell approach are developed to characterize the complete electromechanical properties of: (i) zero-dimensional (3-0), one-dimensional (3-1) and three-dimensional (3-3)…
(more)
▼ Three-dimensional finite element models based on unit-cell approach are developed to characterize the complete electromechanical properties of: (i) zero-dimensional (3-0), one-dimensional (3-1) and three-dimensional (3-3) type porous piezoelectric structures made of lead zirconium titanate (PZT-7A) and relaxor (PMN-PT based) ferroelectrics (RL); and (ii) 3-3 type porous piezoelectric foam structures made of several classes of piezoelectric materials such as barium sodium niobate (BNN), barium titanate (BaTiO3) and relaxor (PMN-PT based) ferroelectrics (RL).
In this thesis, finite element software named ABAQUS is used to characterize the electromechanical response of 3-0, 3-1 and 3-3 type porous piezoelectric structures. Appropriate boundary conditions are invoked for various porous piezoelectric structures (i.e. 3-0, 3-1 and 3-3 type) to ensure that the electromechanical deformation response of the unit-cell, under conditions of electrical and mechanical loading, is representative of the entire porous piezoelectric structures.
Overall, this thesis demonstrates that the microstructural features such as porosity connectivity, porosity aspect ratio, porosity volume fraction, foam shape, and material selection play significant roles on the electromechanical properties and the figures of merit of porous piezoelectric structures.
Subjects/Keywords: porous piezoelectric structures;
Barium Sodium Niobate (BNN);
Barium Titanate (BaTiO3);
porRelaxor Ferroelectrics (RL)
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Singh, J. (2015). Numerical analysis of porous piezoelectric materials
. (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/dspace/handle/10219/2297
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Singh, Jaspreet. “Numerical analysis of porous piezoelectric materials
.” 2015. Thesis, Laurentian University. Accessed February 21, 2019.
https://zone.biblio.laurentian.ca/dspace/handle/10219/2297.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Singh, Jaspreet. “Numerical analysis of porous piezoelectric materials
.” 2015. Web. 21 Feb 2019.
Vancouver:
Singh J. Numerical analysis of porous piezoelectric materials
. [Internet] [Thesis]. Laurentian University; 2015. [cited 2019 Feb 21].
Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2297.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Singh J. Numerical analysis of porous piezoelectric materials
. [Thesis]. Laurentian University; 2015. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2297
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester
5.
Tangsritrakul, Jirapa.
Structure and functional properties of modified potassium
sodium niobate ceramics.
Degree: 2019, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:318007
► Promising piezoelectric properties have been reported in lead-free potassium sodium niobate-based ceramics by introducing Bi0.5(Na0.82K0.18)0.5ZrO3 (BNKZ) into K0.48Na0.52Nb0.95Sb0.05O3 (KNNS) solid solutions in order to control…
(more)
▼ Promising piezoelectric properties have been
reported in lead-free potassium
sodium niobate-based ceramics by
introducing Bi0.5(Na0.82K0.18)0.5ZrO3 (BNKZ) into
K0.48Na0.52Nb0.95Sb0.05O3 (KNNS) solid solutions in order to
control the polymorphic phase transformation temperatures. In this
work, high-resolution synchrotron x-ray powder diffraction (SXPD)
was employed to investigate the phase coexistence, whereas
high-energy x-ray diffraction was used to observe the
electromechanical response for KNNS-BNKZ ceramics. High-resolution
SXPD measurements confirmed that the addition of BNKZ in KNNS
ceramics caused an increase of the rhombohedral-orthorhombic phase
transition temperature (TR-O) and a decrease of the
orthorhombic-tetragonal phase transition temperature (TO-T),
leading to the occurrence of orthorhombic-tetragonal and
rhombohedral-tetragonal coexisting phases at room temperature.
Moreover, core-shell microstructures were observed due to chemical
heterogeneity for BNKZ-containing compositions and led to the
presence of weak shoulders in the temperature-dependent SXPD
profiles due to the difference in lattice spacing between
K-enriched core and K-deficient shell regions. To improve the
homogeneity, different methods, double calcination and attrition
milling, were used to produce the KNNS-BNKZ ceramics. However, the
presence of core-shell microstructures was still observed for the
KNNS-BNKZ ceramics produced using both methods, with the
enhancement of grain size in comparison with the ceramic using
single calcination. In terms of domain-switching behaviour, the
in-situ XRD patterns showed that the preferred orientation was very
weak after initial poling, but it was dramatically enhanced after
ageing for one day, leading to the increase of lattice strain. This
may occur due to the occurrence of internal stress, generated by
the mismatch between core and shell, which possibly induced
ferroelectric switching of non-180 degree domains after ageing. In
addition, the occurrence of polarisation rotation from the initial
direction toward the orthogonal poling direction was illustrated in
a shear-mode study using an applied cross-poling
field.
Advisors/Committee Members: FREER, ROBERT R, Hall, David, Freer, Robert.
Subjects/Keywords: polymorphic phase transformation; synchrotron x-ray diffraction; lead-free piezoceramic; core-shell microstructure; potassium sodium niobate; temperature dependence
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tangsritrakul, J. (2019). Structure and functional properties of modified potassium
sodium niobate ceramics. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:318007
Chicago Manual of Style (16th Edition):
Tangsritrakul, Jirapa. “Structure and functional properties of modified potassium
sodium niobate ceramics.” 2019. Doctoral Dissertation, University of Manchester. Accessed February 21, 2019.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:318007.
MLA Handbook (7th Edition):
Tangsritrakul, Jirapa. “Structure and functional properties of modified potassium
sodium niobate ceramics.” 2019. Web. 21 Feb 2019.
Vancouver:
Tangsritrakul J. Structure and functional properties of modified potassium
sodium niobate ceramics. [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2019 Feb 21].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:318007.
Council of Science Editors:
Tangsritrakul J. Structure and functional properties of modified potassium
sodium niobate ceramics. [Doctoral Dissertation]. University of Manchester; 2019. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:318007

Indian Institute of Science
6.
Vanishri, S.
Studies On Growth And Physical Properties Of Certain Nonlinear Optical And Ferroelectric Crystals.
Degree: 2006, Indian Institute of Science
URL: http://hdl.handle.net/2005/320
► Nonlinear optics and ferroelectrics have been recognized for several decades as promising fields with important applications in the area of opto-electronics, photonics, memory devices, etc.…
(more)
▼ Nonlinear optics and ferroelectrics have been recognized for several decades as promising fields with important applications in the area of opto-electronics, photonics, memory devices, etc. High performance electro-optical switching elements for telecommunications and optical information processing are based on the material properties. Hence, there is always a continuous search for new and better materials. In this thesis we have investigated the growth and physical properties of four crystals viz. two NLO and two ferroelectric crystals.
This thesis consists of eight chapters. The first chapter gives an overview of historical perspectives of nonlinear optical phenomenon, ferroelectricity and materials developed therein. The second chapter gives a brief description of the underlying theories of crystal growth, nonlinear optics and ferroelectricity. A major portion of this chapter consists of gist of the earlier work carried out on compounds of our interest viz. urea L-malic acid,
sodium p-nitrophenolate dihydrate, glycine phosphite and lithium
niobate. Synthesis, growth, crystal structure details and some physical properties of these materials are briefed.
The third chapter describes the experimental techniques needed to grow as well as characterize these crystals. The experiments are performed on single crystals grown in the laboratory using the solution growth setup and Czochralski crystal puller. These growth units are described in detail. Preliminary characterization techniques like powder Xray diffraction, optical transmission, scanning electron microscopy, Vickers and Knoop hardness are described briefly. Various experimental methods viz. dielectric, polarization reversal, photoacoustic spectroscopy and laser induced damage for characterizing the grown crystals are explained.
Urea L-malic acid (ULMA) is a new NLO organic material which is reported to exhibit second harmonic efficiency three times that of the widely used inorganic crystal, KDP. Hence, this material is selected for detailed investigation and the results obtained are discussed in chapter 4. This chapter contains details of single crystal growth and characterization of ULMA. The crystals are grown by slow cooling technique. The complete morphology of the crystal is evaluated using optical goniometry. The grown crystals are characterized for their optical and thermal properties. The defect content in the grown crystal is evaluated by chemical etching. As the surface damage of the crystal by high power lasers limits its performance in NLO applications, a detailed laser induced damage studies are performed on ULMA. Both single shot and multiple shot damage threshold values for 1064 nm and 532 nm laser radiation are determined and correlated with the mechanical hardness. In addition, the thermal diffusivity and thermal conductivity of ULMA along various crystallographic orientations are evaluated using laser induced photoacoustic spectroscopy and the results are interpreted in terms of crystal bonding environment.
Another NLO crystal taken up for…
Advisors/Committee Members: Bhatt, H L.
Subjects/Keywords: Ferroelectric Materials; Ferroelectric Crystals; Nonlinear Optical Materials; Nonlinear Optics; Ferroelectricity; Nonlinear Optical Crystals; Urea L-malic acid (ULMA); Sodium p-Nitrophenolate Dihydrate (NPNa.2H2O); Glycine Phosphite; Lithium Niobate (LiNbO3); Crystal Growth; Crystal Structure; Nonlinear Optical Crystal; Magnetism
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Vanishri, S. (2006). Studies On Growth And Physical Properties Of Certain Nonlinear Optical And Ferroelectric Crystals. (Thesis). Indian Institute of Science. Retrieved from http://hdl.handle.net/2005/320
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Vanishri, S. “Studies On Growth And Physical Properties Of Certain Nonlinear Optical And Ferroelectric Crystals.” 2006. Thesis, Indian Institute of Science. Accessed February 21, 2019.
http://hdl.handle.net/2005/320.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Vanishri, S. “Studies On Growth And Physical Properties Of Certain Nonlinear Optical And Ferroelectric Crystals.” 2006. Web. 21 Feb 2019.
Vancouver:
Vanishri S. Studies On Growth And Physical Properties Of Certain Nonlinear Optical And Ferroelectric Crystals. [Internet] [Thesis]. Indian Institute of Science; 2006. [cited 2019 Feb 21].
Available from: http://hdl.handle.net/2005/320.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Vanishri S. Studies On Growth And Physical Properties Of Certain Nonlinear Optical And Ferroelectric Crystals. [Thesis]. Indian Institute of Science; 2006. Available from: http://hdl.handle.net/2005/320
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology
7.
Řeháková, Bára.
Syntéza a příprava bezolovnaté piezokeramiky
.
Degree: 2018, Brno University of Technology
URL: http://hdl.handle.net/11012/82327
► Tématem diplomové práce je syntéza a následná příprava bezolovnaté piezokeramiky s perovskitovou strukturou, konkrétně draselno-sodného niobátu (KNN). V teoretické části jsou popsány možnosti syntéz KNN…
(more)
▼ Tématem diplomové práce je syntéza a následná příprava bezolovnaté piezokeramiky s perovskitovou strukturou, konkrétně draselno-sodného niobátu (KNN). V teoretické části jsou popsány možnosti syntéz KNN prášku, jeho tvarování a slinování. Experimentální část se věnuje třem typům popsaných syntéz – reakci v pevné fázi, hydrotermální syntéze, sol-gel syntéze, následnému zpracování vzniklých KNN prášků pomocí uniaxálního lisování, metody CIP (cold isostatic pressure), slinování (klasické v peci, případně SPS – spark plasma sintering) takto připravených těles a jejich následné vlastnosti – hustota, velikost zrna a nábojová konstanta. Pomocí každé z metod byl připraven čistý KNN prášek, který byl tvarován a slinován. Nejlepších vlastností dosahovaly vzorky slinuté pomocí SPS, které vykazovaly nejvyšší hustotu a nejnižší nárůst zrna.; The topic of this thesis is synthesis and preparation of lead-free pizoceramic with perovskite structure, in particular potassium-
sodium niobate (KNN). In theoretical part are described possibilities of KNN synthesis and of it’s shaping and sintering. Experimental part deals with three types of synthesis described in the theretical part – solid state reaction, hydrothermal synthesis, sol-gel synthesis, and subconsequentional shaping of prepared powders by uniaxial pressing, cold isostatic pressure method, sintering (classical in oven, in some cases SPS – spark plasma sintering) of such green body and their following properties like relative density, grain size or charge constant. Preparation of KNN powder by each described method took place, followed by shaping and sintering. Best properties were shown by SPS sintered samples, which reached the highest density and lowest grain growth.
Advisors/Committee Members: Částková, Klára (advisor).
Subjects/Keywords: Draselno-sodný niobát;
perovskitová struktura;
piezokeramika;
mikrostruktura;
reakce v pevné fázi;
hydrotermální syntéza;
sol-gel syntéza;
Potassium-sodium niobate;
perovskite structure;
piezoceramics;
microstructure;
solid state reaction;
hydrothermal synthesis;
sol-gel synthesis
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Řeháková, B. (2018). Syntéza a příprava bezolovnaté piezokeramiky
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/82327
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Řeháková, Bára. “Syntéza a příprava bezolovnaté piezokeramiky
.” 2018. Thesis, Brno University of Technology. Accessed February 21, 2019.
http://hdl.handle.net/11012/82327.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Řeháková, Bára. “Syntéza a příprava bezolovnaté piezokeramiky
.” 2018. Web. 21 Feb 2019.
Vancouver:
Řeháková B. Syntéza a příprava bezolovnaté piezokeramiky
. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2019 Feb 21].
Available from: http://hdl.handle.net/11012/82327.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Řeháková B. Syntéza a příprava bezolovnaté piezokeramiky
. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/82327
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
.