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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Fabrication and characterization of magnesium-based metal matrix composites =: 鎂金屬基複合材料的製備與性能測試. / 鎂金屬基複合材料的製備與性能測試 / Fabrication and characterization of magnesium-based metal matrix composites =: Mei jin shu ji fu he cai liao de zhi bei yu xing neng ce shi. / Mei jin shu ji fu he cai liao de zhi bei yu xing neng ce shi

January 2002 (has links)
by Man-Ling Wong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references. / Text in English; abstracts in English and Chinese. / by Man-Ling Wong. / Acknowledgments --- p.i / Abstract --- p.ii / 摘要 --- p.iv / Table of contents --- p.v / Chapter Chapter 1 --- Introduction --- p.1-1 / Chapter 1.1 --- Overview of metal matrix composites --- p.1 -1 / Chapter 1.1.1 --- Types of MMCs --- p.1-1 / Chapter 1.1.2 --- The matrices --- p.1 -2 / Chapter 1.1.2.1 --- Mg-based matrix --- p.1 -2 / Chapter 1.1.2.2 --- Al-based matrix --- p.1-2 / Chapter 1.1.2.3 --- Ti-based matrix --- p.1 -3 / Chapter 1.2 --- Fabrication methods of MMCs --- p.1 -3 / Chapter 1.2.1 --- Solid-liquid reaction --- p.1-4 / Chapter 1.2.2 --- Vapor-liquid-solid (VLS) reaction --- p.1 -4 / Chapter 1.2.3 --- Solid-Solid reaction --- p.1-5 / Chapter 1.2.4 --- Liquid-liquid reaction --- p.1-5 / Chapter 1.3 --- Applications of MMCs --- p.1 -6 / Chapter 1.4 --- Previous works versus our work --- p.1 -7 / Chapter 1.5 --- Layout of the thesis --- p.1 -8 / Figures --- p.1-9 / References --- p.1-10 / Chapter Chapter 2 --- Methodology and Instrumentation --- p.2-1 / Chapter 2.1 --- Introduction --- p.2-1 / Chapter 2.2 --- Powder metallurgy --- p.2-1 / Chapter 2.3 --- Sample preparation --- p.2-2 / Chapter 2.3.1 --- Cold pressing --- p.2-2 / Chapter 2.3.2 --- Sintering --- p.2-3 / Chapter 2.4 --- Characterization methods --- p.2-4 / Chapter 2.4.1 --- Differential Thermal Analyzer (DTA) for thermal analysis --- p.2-4 / Chapter 2.4.2 --- X-Ray powder Diffractometry (XRD) for phase determination --- p.2-5 / Chapter 2.4.3 --- Scanning Electron Microscopy (SEM) and Electron Dispersive X-ray analysis (EDX) for structural analysis --- p.2-6 / Chapter 2.4.4 --- Mechanical properties --- p.2-7 / Chapter 2.4.4.1 --- Relative density --- p.2-7 / Chapter 2.4.4.2 --- Porosity --- p.2-9 / Chapter 2.4.4.3 --- Tensile strength --- p.2-10 / Chapter 2.4.4.4 --- Hardness test --- p.2-10 / Figures --- p.2-12 / References --- p.2-18 / Chapter Chapter 3 --- Formation of the Mg-ZnO MMCs --- p.3-1 / Chapter 3.1 --- Thermal analysis on the reactions between Mg and ZnO --- p.3-1 / Chapter 3.1.1 --- Introduction --- p.3-1 / Chapter 3.1.2 --- Experiments --- p.3-1 / Chapter 3.1.3 --- Results and Discussions --- p.3-1 / Chapter 3.2 --- Characterization of the Mg-ZnO MMCs --- p.3-2 / Chapter 3.2.1 --- Introduction --- p.3-2 / Chapter 3.2.2 --- Experiments --- p.3-3 / Chapter 3.2.3 --- Results and Discussions --- p.3-3 / Chapter 3.2.3.1 --- Scanning electron microscopy (SEM) and Electron dispersive X-ray analysis (EDX) --- p.3-3 / Chapter 3.2.3.2 --- X-ray Diffraction (XRD) --- p.3-4 / Chapter 3.2.3.3 --- Mg-Zn intermetallics Phases --- p.3-5 / Chapter 3.2.4 --- Model of formation of Mg-ZnO MMCs --- p.3-5 / Chapter 3.2.4.1 --- Chemical reactions --- p.3-5 / Chapter 3.2.4.2. --- Order of priority of reactions --- p.3-6 / Chapter 3.2.4.3 --- Diffusion during sintering --- p.3-7 / Chapter 3.2.4.4 --- Reaction Model --- p.3-8 / Chapter 3.2.5 --- Conclusions --- p.3-8 / Figures --- p.3-10 / References --- p.3-18 / Chapter Chapter 4 --- Mechanical properties of the Mg-ZnO MMCs --- p.4-1 / Chapter 4.1 --- Introduction --- p.4-1 / Chapter 4.2 --- Experiments --- p.4-1 / Chapter 4.3 --- Results and Discussions --- p.4-2 / Chapter 4.3.1 --- Relative density --- p.4-2 / Chapter 4.3.2 --- Porosity --- p.4-3 / Chapter 4.3.3 --- Tensile strength --- p.4-4 / Chapter 4.3.4 --- Hardness --- p.4-6 / Chapter 4.4 --- Conclusions --- p.4-7 / Figures --- p.4-9 / References --- p.4-23 / Chapter Chapter 5 --- Reinforcement in Mg-ZnO MMCs --- p.5-1 / Chapter 5.1 --- Introduction --- p.5-1 / Chapter 5.2 --- Experiments --- p.5-1 / Chapter 5.3 --- Results and Discussions --- p.5-1 / Chapter 5.3.1 --- Microstructure of the Mg-ZnO MMCs --- p.5-2 / Chapter 5.3.2 --- Fracture of Mg-ZnO MMCs --- p.5-5 / Chapter 5.3.2.1 --- Fracture surface --- p.5-5 / Chapter 5.3.2.2 --- Fracture mode --- p.5-7 / Chapter 5.4 --- Conclusions --- p.5-8 / Figures --- p.5-9 / References --- p.5-18 / Chapter Chapter 6 --- Conclusions and Future Works --- p.6-1 / Chapter 6.1 --- Conclusions --- p.6-1 / Chapter 6.2 --- Future Works --- p.6-2 / References --- p.6-4
12

Fabrication of metal matrix composite by powder metallurgy method =: 以粉末冶金術製造金屬基複合物. / 以粉末冶金術製造金屬基複合物 / Fabrication of metal matrix composite by powder metallurgy method =: Yi fen mo ye jin shu zhi zao jin shu ji fu he wu. / Yi fen mo ye jin shu zhi zao jin shu ji fu he wu

January 1998 (has links)
Chong, Kam Cheong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1998. / Includes bibliographical references. / Text in English; abstract also in Chinese. / Chong, Kam Cheong. / ACKNOWLEDGMENT --- p.i / ABSTRACT --- p.ii / 摘要 --- p.iv / Table of contents --- p.v / Chapter 1 --- Introduction / Chapter 1.1 --- Metal Matrix Composites / Chapter 1.1.1 --- Background --- p.1-1 / Chapter 1.1.2 --- Some metallic matrix materials --- p.1-2 / Chapter 1.1.2.1 --- Aluminum alloys --- p.1-2 / Chapter 1.1.2.2 --- Titanium alloys --- p.1-3 / Chapter 1.1.3 --- Different kinds of reinforcements --- p.1-3 / Chapter 1.2 --- Conventional fabrication Methods --- p.1-5 / Chapter 1.2.1 --- Primary liquid phase processing --- p.1-5 / Chapter 1.2.1.1 --- Squeeze casting --- p.1-5 / Chapter 1.2.1.2 --- Spray deposition --- p.1-5 / Chapter 1.2.1.3 --- Slurry casting --- p.1-5 / Chapter 1.2.1.4 --- In Situ processing --- p.1-6 / Chapter 1.2.2 --- Primary solid state processing --- p.1-6 / Chapter 1.2.2.1 --- Physical vapour deposition (PVD) --- p.1-6 / Chapter 1.2.2.2 --- Powder blending and sintering --- p.1-7 / Figures for chapter 1 --- p.1-9 / Tables for chapter 1 --- p.1-14 / References --- p.1-15 / Chapter 2 --- Powder metallurgy --- p.2-1 / Chapter 2.1 --- Introduction --- p.2-1 / Chapter 2.2 --- Fabrication of metal matrix-particulate composites --- p.2-2 / Chapter 2.3 --- Our motivation --- p.2-4 / Figures for chapter 2 --- p.2-5 / References --- p.2-7 / Chapter 3 --- Effects of sintering in processing of metal matrix composites --- p.3-1 / Chapter 3.1 --- Introduction of sintering processing --- p.3-1 / Chapter 3.1.1 --- Solid state sintering --- p.3-2 / Chapter 3.1.2 --- Liquid state sintering --- p.3-5 / Chapter 3.1.3 --- Sintering in metal matrix composites(reactive sintering) --- p.3-7 / Figures for chapter 3 --- p.3-11 / Reference --- p.3-14 / Chapter 4 --- Experiments --- p.4-1 / Chapter 4.1 --- Introduction --- p.4-1 / Chapter 4.2 --- Methodology --- p.4-3 / Chapter 4.2.1 --- High temperature furnace experiment --- p.4.3 / Chapter 4.2.2 --- Arc-melting furnace experiment --- p.4-4 / Chapter 4.3 --- Sample preparations --- p.4-4 / Chapter 4.3.1 --- Sample requirements --- p.4-4 / Chapter 4.3.2 --- Sample milling --- p.4-6 / Chapter 4.3.3 --- Cold pressing --- p.4-6 / Chapter 4.3.4 --- Annealing conditions for high-temperature furnace --- p.4-7 / Chapter 4.3.4.1 --- Different sintering temperatures --- p.4-7 / Chapter 4.3.4.2 --- Different sintering duration --- p.4-8 / Chapter 4.3.5 --- Sample conditions in arc-melting furnace --- p.4-8 / Chapter 4.4 --- Instrumentation --- p.4-10 / Chapter 4.4.1 --- Arc-melting furnace --- p.4-10 / Chapter 4.4.2 --- Vickers hardness tester --- p.4-11 / Chapter 4.4.3 --- X-Ray powder diffractometer (XPD) --- p.4-13 / Chapter 4.4.4 --- Scanning electron microscopy & energy dispersive x-ray analysis --- p.4-15 / References --- p.4-18 / Chapter 5 --- Results / Chapter 5.1 --- High-temperature furnace --- p.5-1 / Chapter 5.1.1 --- XPD results --- p.5-1 / Chapter 5.1.2 --- Different sintering temperatures in 10 weight percent of Cr203 - A1 samples with 1 hour sintering time --- p.5-2 / Chapter 5.1.3 --- Different sintering temperatures in 15 weight percent of Cr203 一 A1 samples with 1 hour sintering time --- p.5-6 / Chapter 5.1.4 --- Different sintering temperatures in 20 weight percent of Cr203 ´ؤ A1 samples with 1 hour sintering time --- p.5-10 / Chapter 5.1.5 --- Different sintering temperatures in 30 weight percent of Cr203 ´ؤ A1 samples with 1 hour sintering time --- p.5-13 / Chapter 5.1.6 --- Different sintering time for 10 weight percent of Cr203 ´ؤ A1 samples at 1100°C sintering temperature --- p.5-19 / Chapter 5.1.7 --- Different sintering time for 15 weight percent of Cr203 ´ؤ A1 samples at 1100°C sintering temperature --- p.5-21 / Chapter 5.2 --- Arc-melting furnace --- p.5-24 / Chapter 5.2.1 --- XPD results --- p.5-24 / Chapter 5.2.2 --- Samples that were melted in arc-melting furnace --- p.5-25 / Chapter 5.2.3 --- Powder samples that were melted in arc-melting furnace --- p.5-28 / Figures for chapter 5 --- p.5-30 / References --- p.5-55 / Chapter 6 --- Discussions --- p.6-1 / Chapter 6.1 --- Chemical reactions --- p.6-1 / Chapter 6.2 --- Sintering --- p.6-6 / Chapter 6.2.1 --- Conditions for having larger Al13Cr2 intermetallic compound --- p.5-7 / Chapter 6.3 --- Vickers hardness results --- p.6-10 / Chapter 6.4 --- Comparisons between the two furnace results --- p.6-12 / Chapter 6.4.1 --- Cooling rates --- p.6-12 / Chapter 6.4.2 --- Volume fraction of all the intermetallic compounds --- p.6-14 / Chapter 6.4.3 --- Pore sizes --- p.6-15 / Chapter 6.4.4 --- Vickers hardness --- p.6-16 / References --- p.6-17 / Chapter 7 --- Conclusions and suggestions for further studies --- p.7-1 / BIBLIOGRAPHY
13

Formation of an Mg-based metal matrix composite by the displacement reaction sintering between Mg and Ag2O powders. / 鎂和氧化銀粉反應制備鎂基復合材料 / Formation of an Mg-based metal matrix composite by the displacement reaction sintering between Mg and Ag2O powders. / Mei he yang hua yin fen fan ying zhi bei mei ji fu he cai liao

January 2004 (has links)
Choi Ching Yeung = 鎂和氧化銀粉反應制備鎂基復合材料 / 蔡靜洋. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references. / Text in English; abstracts in English and Chinese. / Choi Ching-Yeung = Mei he yang hua yin fen fan ying zhi bei mei ji fu he cai liao / Cai Jingyang. / Abstract --- p.i / 摘要 --- p.iii / Acknowledgement --- p.iv / List of Figures --- p.xi / List of Tables --- p.xvi / Chapter Chapter 1 --- Introduction --- p.1.1 / Chapter 1.1 --- Metal matrix composites (MMCs) --- p.1.1 / Chapter 1.1.1 --- Introduction --- p.1.1 / Chapter 1.1.2 --- Reinforcement in metal-matrix composites --- p.1.1 / Chapter 1.1.2.1 --- Particle-reinforced composites --- p.1.2 / Chapter 1.1.2.2 --- Laminated composites --- p.1.2 / Chapter 1.1.2.3 --- Fibre-reinforced composites --- p.1.2 / Chapter 1.1.3 --- Conventional fabrication of metal matrix composites --- p.1.6 / Chapter 1.1.3.1 --- Liquid state processes --- p.1.6 / Chapter 1.1.3.1.1 --- Liquid infiltration --- p.1.6 / Chapter 1.1.3.1.2 --- Pressure infiltration --- p.1.8 / Chapter 1.1.3.1.3 --- Spray forming --- p.1.10 / Chapter 1.1.3.2 --- Solid-state process --- p.1.11 / Chapter 1.1.3.2.1 --- Powder consolidation --- p.1.11 / Chapter 1.1.3.2.2 --- Diffusion bonding --- p.1.11 / Chapter 1.1.3.2.3 --- In-Situ processes --- p.1.13 / Chapter 1.1.4 --- Properties of metal matrix composites --- p.1.13 / Chapter 1.2 --- Magnesium based metal matrix composites --- p.1.14 / Chapter 1.2.1 --- Properties of Mg-based metal matrix composites --- p.1.14 / Chapter 1.2.2 --- Application of Mg-based metal matrix composites --- p.1.16 / Chapter 1.3 --- Magnesium and silver (I) oxide --- p.1.16 / Chapter 1.3.1 --- Magnesium --- p.1.16 / Chapter 1.3.2 --- Silver (I) oxide --- p.1.17 / Chapter 1.4 --- Pervious works --- p.1.17 / Chapter 1.5 --- Aims of Current works --- p.1.18 / Chapter 1.6 --- Thesis layout --- p.1.20 / References --- p.1.21 / Chapter Chapter 2 --- Methodology and fabrication --- p.2.1 / Chapter 2.1 --- Introduction --- p.2.1 / Chapter 2.1.1 --- Powder metallurgy --- p.2.1 / Chapter 2.1.1.1 --- Powder production --- p.2.3 / Chapter 2.1.1.2 --- Powder consolidation --- p.2.4 / Chapter 2.1.1.3 --- Sintering process --- p.2.6 / Chapter 2.1.1.4 --- Properties of sintered parts --- p.2.10 / Chapter 2.2 --- Sample preparation --- p.2.12 / Chapter 2.3 --- Characterization methods --- p.2.13 / Chapter 2.3.1 --- Thermal analysis - Differential Thermal Analysis (DTA) --- p.2.13 / Chapter 2.3.2 --- Phase determination - X-ray Powder Diffractometry (XRD) --- p.2.13 / Chapter 2.3.3 --- Microstructure analysis --- p.2.14 / Chapter 2.3.3.1 --- Scanning electron microscopy (SEM) --- p.2.14 / Chapter 2.3.3.1 --- Transmission electron microscopy (TEM and HRTEM) --- p.2.14 / Chapter 2.3.4 --- Physical property - Thermomechanic analyser (TMA) --- p.2.14 / Chapter 2.3.5 --- Mechanical property - Vickers hardness measurement --- p.2.15 / References --- p.2.16 / Chapter Chapter 3 --- Thermal analysis of Mg-Ag20 --- p.3.1 / Chapter 3.1 --- Introduction --- p.3.1 / Chapter 3.2 --- Experiments --- p.3.2 / Chapter 3.3 --- Results --- p.3.2 / Chapter 3.3.1 --- DTA curve of the Mg-30wt%Ag20 --- p.3.5 / Chapter 3.3.2 --- DTA curve of the pure Ag20 powder --- p.3.7 / Chapter 3.4 --- Discussions --- p.3.7 / Chapter 3.5 --- Conclusions --- p.3.10 / References --- p.3.11 / Chapter Chapter 4 --- Fabrication and characterization of Mg-£-AgMg3 MMCs --- p.4.1 / Chapter 4.1 --- Introduction --- p.4.1 / Chapter 4.2 --- Experiments --- p.4.2 / Chapter 4.2.1 --- Sample preparation --- p.4.2 / Chapter 4.2.1.1 --- Effect of temperature --- p.4.2 / Chapter 4.2.1.2 --- Effect of time --- p.4.3 / Chapter 4.2.1.3 --- Effect of composition --- p.4.3 / Chapter 4.2.1.4 --- Effect of cooling rate --- p.4.3 / Chapter 4.3 --- Results --- p.4.4 / Chapter 4.3.1 --- Samples sintered at different temperatures --- p.4.4 / Chapter 4.3.1.1 --- XRD spectra --- p.4.4 / Chapter 4.3.1.2 --- SEM micrographs and EDS analysis --- p.4.7 / Chapter 4.3.1.3 --- Discussions --- p.4.11 / Chapter 4.3.2 --- Sample with different dwelling times --- p.4.13 / Chapter 4.3.2.1 --- SEM micrographs --- p.4.13 / Chapter 4.3.2.2 --- Weight loss against dwelling time --- p.4.16 / Chapter 4.3.2.3 --- Discussions --- p.4.18 / Chapter 4.3.3 --- Samples with varied weight percentage of Ag2O --- p.4.19 / Chapter 4.3.3.1 --- SEM micrographs --- p.4.19 / Chapter 4.3.3.2 --- Discussions --- p.4.22 / Chapter 4.3.4 --- Samples with different cooling rate --- p.4.23 / Chapter 4.3.4.1 --- XRD patterns --- p.4.23 / Chapter 4.3.4.2 --- Optical photographs --- p.4.25 / Chapter 4.3.4.3 --- SEM micrographs --- p.4.28 / Chapter 4.3.4.4 --- TEM micrographs and high-resolution TEM micrographs…… --- p.4.31 / Chapter 4.3.4.5 --- Discussions --- p.4.35 / Chapter 4.3.4.5.1 --- XRD spectra --- p.4.35 / Chapter 4.3.4.5.2 --- Optical photographs --- p.4.35 / Chapter 4.3.4.5.3 --- SEM micrographs --- p.4.35 / Chapter 4.3.4.5.4 --- TEM micrographs --- p.4.36 / Chapter 4.4 --- Conclusions --- p.4.37 / References --- p.4.38 / Chapter Chapter 5 --- Mechanical hardness and thermal expansion of Mg-Ag20 --- p.5.1 / Chapter 5.1 --- Introduction --- p.5.1 / Chapter 5.2 --- Mechanical properties --- p.5.1 / Chapter 5.2.1 --- Experiments --- p.5.1 / Chapter 5.2.2 --- Results --- p.5.2 / Chapter 5.2.3 --- Discussions --- p.5.8 / Chapter 5.3 --- Thermal properties --- p.5.9 / Chapter 5.3.1 --- Experimental details --- p.5.9 / Chapter 5.3.2 --- Results --- p.5.10 / Chapter 5.3.3 --- Discussions --- p.5.12 / Chapter 5.4 --- Conclusions --- p.5.13 / References --- p.5.14 / Chapter Chapter 6 --- Conclusions and future works --- p.6.1 / Chapter 6.1 --- Conclusions --- p.6.1 / Chapter 6.2 --- Further works --- p.6.2
14

Characterization of new particulate MMC materials and bolted joints through applicable ASTM standards

Mathew, Vinu Zacharia. January 2003 (has links)
Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains viii, 89 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 79-80).
15

Parametric modeling of bolted joints between components made of particulate composite materials

Goteti, Vasudha. January 2003 (has links)
Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains xii, 79 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 78-79).
16

A multi-fiber unit cell for prediction of transverse properties in metal matrix composites

Eluripati, Rajeev. January 2003 (has links)
Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains xiii, 85 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 83-85).
17

The selective chemical etching of CeO doped Gd O -Mo composites.

Rieger, Robert Allen 12 1900 (has links)
No description available.
18

Factors determining the unidirectional solidification behavior of the systems UO[subscript]2-Ta, UO[subscript]2-Nb, and UO[subscript]2-Mo.

Jen, Chi-Chin 12 1900 (has links)
No description available.
19

The effect of diode and array geometrical parameters on performance of high field electron emitters formed from unidirectionally solidified uranium dioxide-tungsten composites

Ohlinger, Wayne Laurance 08 1900 (has links)
No description available.
20

Stabilized ZrO -W composites produced by unidirectional solidification

Watson, Michael David 12 1900 (has links)
No description available.

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