Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · dateNew search

You searched for subject:(Cu Zn brass). Showing records 1 – 3 of 3 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


NSYSU

1. Jhou, Gen-wei. The Study of Microstructure and Mechanical Properties of Fine-grained Cu-40%Zn Alloy Fabricated by Friction Stir ProcessingFabricated by Friction Stir Processing.

Degree: Master, Materials and Optoelectronic Science, 2013, NSYSU

In this work, fine-grained Cu-40%Zn brass was produced by friction stir processing (FSP). The severe plastic deformation (SPD) and hot deformation provided by FSP could effectively refine the grains. By using proper heat treatment, two different proportions of α/β dual-phase structure were produced, which were subsequently processed by different FSP parameters to form fine-grained structure. The effect of FSP parameters on the microstructure and mechanical properties was studied. The microstructure was characterized by using transmission electron microscopy (TEM) and electron backscattered diffraction (EBSD), and both microhardness and tensile test were used to measure the mechanical properties. A dual-phase structure with 30% β-phase was obtained by annealing the alloy at 700 °C for 1 hour and water quenching to room temperature. After FSP, the alloy contains nearly complete α-phase in all processing conditions, in which the grain size ranges from 1~6 μm. The grain size decreases as the tool rotation rate decreases or the tool transverse speed increases. An increase in FSP pass is the most effective way to refine the grain size and results in high strength. The study also indicates that a faster cooling rate in FSP could results in smaller grains by limiting grain growth. Advisors/Committee Members: Chih-Pu Chang (chair), Chung-Yi Yu (chair), Po-We Kao (committee member).

Subjects/Keywords: friction stir processing; severe plastic deformation; Cu-Zn brass; electron backscattered diffraction (EBSD)

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Jhou, G. (2013). The Study of Microstructure and Mechanical Properties of Fine-grained Cu-40%Zn Alloy Fabricated by Friction Stir ProcessingFabricated by Friction Stir Processing. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0631113-193606

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):

Jhou, Gen-wei. “The Study of Microstructure and Mechanical Properties of Fine-grained Cu-40%Zn Alloy Fabricated by Friction Stir ProcessingFabricated by Friction Stir Processing.” 2013. Thesis, NSYSU. Accessed March 19, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0631113-193606.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Jhou, Gen-wei. “The Study of Microstructure and Mechanical Properties of Fine-grained Cu-40%Zn Alloy Fabricated by Friction Stir ProcessingFabricated by Friction Stir Processing.” 2013. Web. 19 Mar 2019.

Vancouver:

Jhou G. The Study of Microstructure and Mechanical Properties of Fine-grained Cu-40%Zn Alloy Fabricated by Friction Stir ProcessingFabricated by Friction Stir Processing. [Internet] [Thesis]. NSYSU; 2013. [cited 2019 Mar 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0631113-193606.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jhou G. The Study of Microstructure and Mechanical Properties of Fine-grained Cu-40%Zn Alloy Fabricated by Friction Stir ProcessingFabricated by Friction Stir Processing. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0631113-193606

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Σκόρδης, Χρήστος. Διακυμάνσεις των επιπέδων χαλκού, ψευδαργύρου και μαγνησίου κατά τη διάρκεια μυικής καταπόνησης.

Degree: 1989, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); National and Kapodistrian University of Athens

Subjects/Keywords: Χαλκός ( Cu ); Ψευδάργυρος (Zn); Μαγνήσιο; Καταπόνηση; Μυική καταπόνηση; Ιχνοστοιχεία; Αθλητική επίδοση; Brass; Zinc (Zn); Magnesium; Fatigue; Muscular fatigue; Microelements; Athletic performance

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Σκόρδης, . (1989). Διακυμάνσεις των επιπέδων χαλκού, ψευδαργύρου και μαγνησίου κατά τη διάρκεια μυικής καταπόνησης. (Thesis). Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); National and Kapodistrian University of Athens. Retrieved from http://hdl.handle.net/10442/hedi/12781

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):

Σκόρδης, Χρήστος. “Διακυμάνσεις των επιπέδων χαλκού, ψευδαργύρου και μαγνησίου κατά τη διάρκεια μυικής καταπόνησης.” 1989. Thesis, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); National and Kapodistrian University of Athens. Accessed March 19, 2019. http://hdl.handle.net/10442/hedi/12781.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Σκόρδης, Χρήστος. “Διακυμάνσεις των επιπέδων χαλκού, ψευδαργύρου και μαγνησίου κατά τη διάρκεια μυικής καταπόνησης.” 1989. Web. 19 Mar 2019.

Vancouver:

Σκόρδης . Διακυμάνσεις των επιπέδων χαλκού, ψευδαργύρου και μαγνησίου κατά τη διάρκεια μυικής καταπόνησης. [Internet] [Thesis]. Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); National and Kapodistrian University of Athens; 1989. [cited 2019 Mar 19]. Available from: http://hdl.handle.net/10442/hedi/12781.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Σκόρδης . Διακυμάνσεις των επιπέδων χαλκού, ψευδαργύρου και μαγνησίου κατά τη διάρκεια μυικής καταπόνησης. [Thesis]. Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); National and Kapodistrian University of Athens; 1989. Available from: http://hdl.handle.net/10442/hedi/12781

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Indian Institute of Science

3. Bhaskar, Srilakshmi P. A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method.

Degree: 2016, Indian Institute of Science

Recent advancements in nanotechnology and emerging applications of nanomaterials in various fields have stimulated interest in fundamental scientific research dealing with the size and structure controlled synthesis of nanoparticles. The unique properties of nanoparticles are largely size dependent which could be tuned further by varying shape, structure, and surface properties, etc. The preparation of monodisperse nanoparticles is desirable for many applications due to better control over properties and higher performance compared to polydispersity nanoparticles. There are several methods for the synthesis of nanoparticles based on top-down and bottom-up approaches. The main disadvantage of top-down approach is the difficulty in achieving size control. Whereas, uniform nanoparticles with controllable size could be obtained by chemical methods but most of them are difficult to scale up. Moreover, a separate step of size separation is necessary in order to achieve monodispersed which may lead to material loss. In this context, a post-synthetic size modification process known as digestive ripening is highly significant. In this process, addition of a capping agent to poly disperse colloid renders it highly monodisperse either under ambient or thermal conditions. In addition to size control, digestive ripening is also effective in controlling the structure of nanoparticles in colloidal solution comprising two different elements. Use of co-digestive ripening strategy in conjunction with solvated metal atom dispersion (SMAD) method of synthesis resulted in hetero structures such as core–shell, alloy, and composite nanoparticles. Despite the versatility of digestive ripening process, the underlying mechanism in controlling size and structure of nanoparticles are not understood to date. The aim of this thesis is to gain mechanistic insight into size control of digestive ripening as well as to investigate structure control in various binary systems. Objectives  Study digestive ripening of Au nanoparticles using various alkyl amines to probe the mechanism  Study co-digestive ripening of binary colloids consisting of two metals, Pd and Cu prepared separately by SMAD method  Study co-digestive ripening of binary colloids consisting of a metal (Au) and a semiconductor (CdS) prepared separately by SMAD method  Study vaporization of bulk brass in SMAD reactor and analyse phase, structure, and morphology of various Cu/Zn bimetallic nanoparticles obtained from bulk brass under various experimental conditions Significant results In chapter 1, fundamental processes of nanoparticle formation and common synthetic techniques for the preparation of monodisperse nanoparticles are briefly discussed. Chapter 2 presents a mechanistic study of digestive ripening process with regard to size control using Au nanoparticles as a model system. Three long chain alkyl amine molecules having different chain length were used as digestive ripening agents. The course of digestive ripening process was analysed by UV-visible spectroscopy and… Advisors/Committee Members: Jagirdar, Balaji R.

Subjects/Keywords: Digestive Ripening; Nanoparticles; Monodisperse Nanoparticles; Solvated Metal Atom Dispersion Method; Gold(Au) Nanoparticles Digestive Ripening; Binary Colloids Co-Digestive Ripening; Bulk Brass Vaporization; Copper Zinc(CU/ZN) Bimetallic Nanoparticles; Nanoparticles Digestive Ripening; Co-Digestive Ripening; Nanomaterials; Metal Semiconductor(Au/Cds) Nanocomposites; PdCu Alloy Nanoparticles; SMAD Method; Physical Chemistry

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Bhaskar, S. P. (2016). A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method. (Thesis). Indian Institute of Science. Retrieved from http://hdl.handle.net/2005/2924

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):

Bhaskar, Srilakshmi P. “A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method.” 2016. Thesis, Indian Institute of Science. Accessed March 19, 2019. http://hdl.handle.net/2005/2924.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Bhaskar, Srilakshmi P. “A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method.” 2016. Web. 19 Mar 2019.

Vancouver:

Bhaskar SP. A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method. [Internet] [Thesis]. Indian Institute of Science; 2016. [cited 2019 Mar 19]. Available from: http://hdl.handle.net/2005/2924.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bhaskar SP. A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method. [Thesis]. Indian Institute of Science; 2016. Available from: http://hdl.handle.net/2005/2924

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.