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A Study of the Interfacial Stability of Ti/Al2O3, Ti3Al/Al2O3 and TiAl/Al2O3 Composite Materials
This thesis is a study of the interfacial stability of the Ti-Base metal matrix composites Ti/Al2O3, Ti3Al/Al2O3 and TiAl/Al2O3. Interfacial stability is discussed in view of the importance of thermodynamics and kinetics as the primary considerations which govern the type of stability observed. From a thermodynamics approach, the application of phase equilibrium diagrams is essential in the design of composite systems. A classification system, with reference to phase equilibrium, is used to describe the type of interfacial stability observed for the composites studied. In addition, electron-probe microanalysis, atom-probe field ion microscopy and X-ray diffraction results are used to establish Ti-Al-O phase relations for the temperature range 900-to-1250 deg C. The kinetics of interfacial stability is discussed with particular attention given to the kinetic considerations; diffusion path, phase formation sequence, steady-state layer growth and interface morphology. Kinetic results in the form of parabolic growth constants and calculated interdiffusion coefficients are presented.
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Africa and the West
Besides her natural beauty, the scenery and the climate, and her abundant wildlife and natural resources, Africa is probably best known as the homeland of hundreds of millions of people who live in abject poverty. Millions are wracked by disease and blinded by ignorance. And just as many go hungry every day. But there is something else which also distinguishes Africa: lack of unity among her people. That is one of the main reasons why they were conquered by foreigners, and why Africa is still weak and poor today. There is no other continent which is endowed with so much in terms of natural resources. But there is also no other continent where it has been so easy for foreigners to take what does not belong to them. This book began as a self-examination of the African personality in an attempt to understand Africa's place in the world, especially in relation to the West.
Into the Heart of Darkness
This books is the culmination of an investigation spanning several years into state sponsored apartheid death squads ...
Riotous Assembly
When Miss Hazelstone of Jacaranda Park kills her Zulu cook in a sensational crime passionel, the gallant members of the South African police force are soon on the scene: Kommandant van Heerden, whose secret longing for the heart of an English gentleman leads to the most memorable transplant operation yet recorded; Luitenant Verkramp of the Security Branch, ever active in the pursuit of Communist cells; Konstabel Els, with his propensity for shooting first and not thinking later - and also for forcing himself upon African women in a manner legally reserved for male members of their own race. In the course of the strange events which follow, we encounter some very esoteric perversions when the Kommandant is held captive in Miss Hazelstone's remarkable rubber room; and some even more amazing perversions of justice when Miss Hazelstone's brother, the Bishop of Barotseland, is sentenced to be hanged on the ancient gallows in the local prison. Not a 'political' novel in any previously imagined sense, Riotous Assembly provided a completely fresh approach to the South African scene - an approach startling in its deadpan savagery and yet also outrageously funny.
My Neighbor Raymond
"My Neighbor Raymond" by Paul de Kock. Published by Good Press. Good Press publishes a wide range of titles that encompasses every genre. From well-known classics & literary fiction and non-fiction to forgotten−or yet undiscovered gems−of world literature, we issue the books that need to be read. Each Good Press edition has been meticulously edited and formatted to boost readability for all e-readers and devices. Our goal is to produce eBooks that are user-friendly and accessible to everyone in a high-quality digital format.
