by Yuen Cheong Wing. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references (leaves [138]-[142]). / by Yuen Cheong Wing. / Acknowledgments --- p.ii / Abstract --- p.iii / Table of Contents --- p.v / Chapter Chapter 1: --- Introduction --- p.1-1 / Chapter 1.1 --- What is Metallic Glass? --- p.1-1 / Chapter 1.2 --- Use of Metallic Glass --- p.1-3 / Chapter 1.3 --- A Dilemma --- p.1-4 / Chapter 1.4 --- Glass Forming Ability --- p.1-5 / Chapter 1.5 --- Role of Liquid State Phase Separation in GFA --- p.1-6 / References --- p.1-9 / Figure --- p.1-10 / Chapter Chapter 2: --- Phase Separation Theory --- p.2-1 / Chapter 2.1 --- Free Energy Curve --- p.2-1 / Chapter 2.2 --- Nucleation and Growth --- p.2-2 / Chapter 2.2.1 --- Liquid state nucleation and growth --- p.2-2 / Chapter 2.2.2 --- Nucleation and growth during solidification --- p.2-4 / Chapter 2.3 --- Spinodal Decomposition --- p.2-5 / Chapter 2.3.1 --- Cahn-Hilliard linearized equation --- p.2-6 / Chapter 2.3.2 --- Temporal evolution --- p.2-9 / References --- p.2-12 / Figures --- p.2-15 / Chapter Chapter 3 ： --- Experimental Setup and Techniques --- p.3-1 / Chapter 3.1 --- Technique in Achieving High Undercooling --- p.3 -1 / Chapter 3.1.1 --- Effects and limitation of B203 --- p.3-1 / Chapter 3.1.2 --- Preparation of B203 --- p.3-3 / Chapter 3.1.3 --- Cleansing of apparatus --- p.3-4 / Chapter 3.2 --- Experimental --- p.3-5 / Chapter 3.2.1 --- Sample preparation --- p.3-6 / Chapter 3.2.2 --- Experimental setup --- p.3-7 / Chapter 3.2.3 --- Procedures --- p.3-8 / Chapter 3.3 --- Observing the Microstructure --- p.3-9 / Chapter 3.3.1 --- Cutting --- p.3-10 / Chapter 3.3.2 --- Molding --- p.3-10 / Chapter 3.3.3 --- Polishing --- p.3-11 / Chapter 3.3.4 --- Etching --- p.3-12 / Chapter 3.3.5 --- Observation --- p.3-12 / References --- p.3-14 / Table --- p.3-15 / Figures --- p.3-16 / Chapter Chapter 4: --- Metastable liquid phase separationin undercooled molten PD40. 5]\l40.5P19 --- p.4-1 / Abstract --- p.4-1 / References --- p.4-9 / Figures --- p.4-10 / Chapter Chapter 5 ： --- Transformation in undercooled molten PD40.5NI40.5P19 --- p.5-1 / Chapter 5.1 --- Abstract --- p.5-1 / Chapter 5.1 --- Introduction --- p.5-2 / Chapter 5.3 --- Experimental --- p.5-4 / Chapter 5.4 --- Results --- p.5-6 / Chapter 5.5 --- Discussions --- p.5-13 / References --- p.5-20 / Figures --- p.5-22 / Chapter Chapter 6 ： --- Solidification of liquid spinodal in undercooled PD40.5NI40.5P19 --- p.6-1 / Chapter 6.1 --- Abstract --- p.6-1 / Chapter 6.2 --- Introduction --- p.6-2 / Chapter 6.3 --- Experimental --- p.6-3 / Chapter 6.4 --- Results --- p.6-5 / Chapter 6.5 --- Discussions --- p.6-10 / References --- p.6-17 / Figures --- p.6-18 / Chapter Chapter 7: --- Conclusion --- p.7-1 / References --- p.7-4 / Bibliography --- p.B-1

by Kwong Wai Kuen = 鋁銘金屬間化合物的製造和性能測試 / 鄺偉權. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references. / Text in English; abstracts in English and Chinese. / by Kwong Wai Kuen = Lü ming jin shu jian hua he wu de zhi zao he xing neng ce shi / Kuang Weiquan. / Acknowledgement --- p.i / Abstract --- p.ii / 摘要 --- p.iii / List of tables --- p.iv / List of figures --- p.v / Table of contents --- p.xi / Chapter Chapter 1 --- Background / Chapter 1.1 --- Introduction --- p.1-1 / Chapter 1.2 --- Aluminum --- p.1-1 / Chapter 1.3 --- Chromium --- p.1-3 / Chapter 1.4 --- Intermetallics --- p.1-4 / Chapter 1.4.1 --- Alloys and intermetallics --- p.1-4 / Chapter 1.4.2 --- Properties of intermetallics --- p.1-5 / Chapter 1.4.3 --- Intermetallics 一 past to present --- p.1-6 / Chapter 1.4.4 --- Commonly used intermetallics --- p.1-7 / Chapter 1.4.5 --- Prospects of intermetallic compounds --- p.1-9 / Chapter 1.5 --- Previous works --- p.1-11 / Chapter 1.6 --- Current work --- p.1-12 / Chapter 1.7 --- Outline of thesis --- p.1-12 / References --- p.1-14 / Tables and figures --- p.1-17 / Chapter Chapter 2 --- Methodology and Instrumentation / Chapter 2.1 --- Experimental approaches --- p.2-1 / Chapter 2.2 --- Sample preparation --- p.2-2 / Chapter 2.2.1 --- Powder mixture --- p.2-2 / Chapter 2.2.2 --- Cold-pressing --- p.2-2 / Chapter 2.2.3 --- Pressureless sintering --- p.2-2 / Chapter 2.2.4 --- Hot-pressing --- p.2-3 / Chapter 2.2.5 --- Arc-melting --- p.2-4 / Chapter 2.3 --- Sample characterization --- p.2-5 / Chapter 2.3.1 --- DTA --- p.2-5 / Chapter 2.3.2 --- TMA --- p.2-5 / Chapter 2.3.3 --- Density measurement --- p.2-6 / Chapter 2.3.4 --- Microhardness measurement --- p.2-7 / Chapter 2.3.5 --- Scanning electron microscopy --- p.2-8 / Chapter 2.3.6 --- X-ray powder diffractometry --- p.2-9 / References --- p.2-10 / Figures --- p.2-11 / Chapter Chapter 3 --- Thermal analysis of Al-Cr powder mixtures / Chapter 3.1 --- Introduction --- p.3-1 / Chapter 3.2 --- Experiments --- p.3-1 / Chapter 3.3 --- Results and discussions --- p.3-2 / Chapter 3.3.1 --- DTA results --- p.3-2 / Chapter 3.3.2 --- Al-23wt%Cr --- p.3-2 / Chapter 3.3.3 --- Al-28wt%Cr and Al-33wt%Cr --- p.3-5 / Chapter 3.3.4 --- Al-46wt%Cr --- p.3-8 / Chapter 3.3.5 --- Al-55wt%Cr --- p.3-9 / Chapter 3.3.6 --- Al-79wt%Cr --- p.3-10 / Chapter 3.4 --- Reaction mechanisms in the formation of Al-Cr intermetallic compounds --- p.3-12 / Chapter 3.5 --- Summary --- p.3-12 / References --- p.3-14 / Tables and figures --- p.3-15 / Chapter Chapter 4 --- Fabrication of Al-Cr samples by hot-pressing and by arc-melting / Chapter 4.1 --- Introduction --- p.4-1 / Chapter 4.1.1 --- Hot-pressing method --- p.4-1 / Chapter 4.1.2 --- Arc-melting method --- p.4-2 / Chapter 4.2 --- Experiments --- p.4-2 / Chapter 4.3 --- Results and discussions --- p.4-3 / Chapter 4.3.1 --- Hot-pressing method for some specific compositions --- p.4-3 / Chapter 4.3.2 --- Hot-pressing method to produce low Cr content (LC) samples --- p.4-5 / Chapter 4.3.3 --- Effects of hot-pressed time and temperature --- p.4-6 / Chapter 4.3.4 --- Arc-melting method for some specific compositions --- p.4-8 / Chapter 4.3.5 --- Arc-melting method to produce LC samples --- p.4-10 / Chapter 4.4 --- Summary --- p.4-11 / Reference --- p.4-12 / Tables and figures --- p.4-13 / Chapter Chapter 5 --- Thermal expansion coefficients of arc-melted Al-Cr samples / Chapter 5.1 --- Introduction --- p.5-1 / Chapter 5.1.1 --- Thermal expansion --- p.5-1 / Chapter 5.1.2 --- Relations between thermal expansion and structural material --- p.5-1 / Chapter 5.2 --- Experiments --- p.5-2 / Chapter 5.3 --- Results and discussions --- p.5-3 / Chapter 5.3.1 --- TMA results of A1 and Cr --- p.5-3 / Chapter 5.3.2 --- TMA for Al-Cr IMCs --- p.5-3 / Chapter 5.4 --- Summary --- p.5-4 / References --- p.5-6 / Figures --- p.5-7 / Chapter Chapter 6 --- Physical properties of Al-Cr intermetallic compounds / Chapter 6.1 --- Introduction --- p.6-1 / Chapter 6.2 --- Results and discussion --- p.6-1 / Chapter 6.2.1 --- Hot-pressed samples --- p.6-1 / Chapter 6.2.1.1 --- Hot-pressed LC samples --- p.6-2 / Chapter 6.2.1.2 --- Effects of hot-pressing temperature and time --- p.6-3 / Chapter 6.2.2 --- Arc-melted samples --- p.6-4 / Chapter 6.2.3 --- Comparison between the hot-pressed sample and the arc-melted sample --- p.6-6 / Chapter 6.3 --- Summary --- p.6-7 / Tables and figures --- p.6-9 / Chapter Chapter 7 --- Conclusions / Chapter 7.1 --- Summary --- p.7-1 / Chapter 7.2 --- Future works --- p.7-2

"May 2003" / Includes bibliographical references (leaves 261-270) / xvi, 271, [16] leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, School of Chemistry and Physics, 2003

A high temperature high vacuum rheometer has been designed, fabricated, and tested for the study of the steady shear viscosity for multicomponent bulk metallic glass forming alloys. This rheometer has an operating range up to 1525 K, rotational frequencies of 9.4*10⁻³-3.7*10¹ radians/s, and a calibrated viscosity range of 9.6*10⁻³ and 1.2*10² Pa*s while maintaining absolute pressures pressure < 1*10⁻⁶ mbar. Zr[subscript 41.2]Ti[subscript 13.8]Cu[subscript 10.0]Ni[subscript 12.5]Be[subscript 22.5] (Vitreloy 1) is reported. The unexpected findings of non-Newtonian behavior above the liquidus temperature were observed. Observations of shear thinning, thixotropic, and viscoelastic behaviors have been made. Our results show that Vitreloy 1 can be modeled as a power law fluid, with a power law exponent of approximately -0.5 for high shear rates. We attribute the non-Newtonian behavior to structural ordering within the melt. The technological and scientific implications for non-Newtonian behavior are discussed. / Graduation date: 2005

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