Wettability at High Temperatures

Front Cover
N. Eustathopoulos, M.G. Nicholas, B. Drevet
Elsevier, Nov 24, 1999 - Technology & Engineering - 419 pages
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The purpose of this book is to bring together current scientific understanding of wetting behaviour that has been gained from theoretical models and quantitative experimental observations. The materials considered are liquid metals or inorganic glasses in contact with solid metals or ceramics at temperatures of 200-2000oC.
Wetting has been a significant scientific concern for the last two centuries and reference will be made to classical work by nineteenth century scientists such as Dupré, Laplace and Young that was validated by observations of the behaviour of chemically inert ambient temperature systems.
In attempting to achieve the aims of the book, the text has been divided into ten Chapters that can be grouped into four stages of presentation. The first stage comprises two Chapters that review established and newly developed models for their relevance to wetting behaviour at high temperatures, including recent models that encompass the role of chemical reactions at the solid/liquid interfaces. Attention is paid both to equilibrium wetting behaviour (Chapter 1) and to the factors that control the approach to equilibrium (Chapter 2). Then follow Chapters concerned with experimental techniques for scientific measurement of the extent of wetting (Chapter 3) and with the surface energy data for both metals and non-metals that are essential for quantitative interpretation of wetting behaviour (Chapter 4). Descriptions of experimentally determined and quantified wetting behaviour are presented and interpreted in the third part comprising five Chapters dealing with the characteristics of metal/metal, metal/oxide, metal/non-oxide, metal/carbon and molten glass/solid systems. The book concludes with a Chapter commenting on the role of wetting behaviour in joining similar and dissimilar materials by liquid route techniques.
 

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Contents

Chapter 1 Fundamental equations of wetting
1
Chapter 2 Dynamics of wetting by metals and glasses
54
Chapter 3 Methods of measuring wettability parameters
106
Chapter 4 Surface energies
148
Chapter 5 Wetting properties of metalmetal systems
175
Chapter 6 Wetting properties of metaloxide systems
198
Chapter 7 Wetting properties of metalnonoxide ceramic systems
261
Chapter 8 Wetting properties of metalcarbon systems
317
Appendix C Contact angle hysteresis for heterogeneous solid surfaces
389
Appendix D Estimation of the mass of a sessile drop needed for an optimised σLV measurement
391
the case of cylindrical solids
393
Appendix F Surface energies of cubic diamond structure compounds
395
Appendix G Enthalpy of mixing of binary liquid alloys
397
Appendix H Secondary wetting
399
Appendix I Evaluation of the work of adhesion of Ni on SiC
404
List of symbols
405

Chapter 9 Wetting by glasses and salts
339
Chapter 10 Wetting when joining
348
Appendix A The Laplace equation
385
Appendix B Free energy of formation of a meniscus on a vertical plate in the gravitational field
386
Selective Index
411
Acknowledgements
419
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