Download or read book Interaction de c ramiques non oxydes Si3N4 SiC AlN avec l aluminium liquide written by Luc Mouradoff and published by . This book was released on 1994 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA REACTIVITE DE CERAMIQUES NON-OXYDES (SI#3N#4, SIC ET ALN), EN CONTACT AVEC L'ALUMINIUM LIQUIDE, A ETE ETUDIEE AFIN DE CHOISIR UN MATERIAU UTILISABLE POUR LA REALISATION DE GAINES PROTECTRICES DE THERMOPLONGEURS, EN VUE D'UNE APPLICATION INDUSTRIELLE. LA STABILITE INTRINSEQUE DE CES TROIS CERAMIQUES EST TESTEE EN UTILISANT DES MATERIAUX PURS, ELABORES PAR DEPOT CHIMIQUE EN PHASE VAPEUR (SI#3N#4, SIC), OU PAR COMPRESSION ISOSTATIQUE A CHAUD (ALN). LES ESSAIS DE MOUILLABILITE PAR LA METHODE DE LA GOUTTE POSEE, DE CORROSION PAR LA METHODE DES DOIGTS PLONGEANTS ET D'OXYDATION SONT COUPLES A DES OBSERVATIONS MORPHOLOGIQUES, A LA CARACTERISATION PHYSICO-CHIMIQUE DES INTERFACES AINSI QU'A DES CALCULS THERMODYNAMIQUES. LA COMPARAISON DES RESULTATS AVEC CEUX OBTENUS A PARTIR DE PRODUITS INDUSTRIELS (SIC RECRISTALLISE ET SI#3N#4 FRITTE REACTION) ET DES CONSIDERATIONS ECONOMIQUES ONT PERMIS DE DETERMINER LA CERAMIQUE LA PLUS APTE A REMPLIR LE ROLE DE GAINE PROTECTRICE DE THERMOPLONGEUR: LE NITRURE DE SILICIUM. EN VUE DE L'INDUSTRIALISATION DU PRODUIT, CE NITRURE A ENSUITE ETE FRITTE A L'AIDE D'AJOUTS SOIGNEUSEMENT CHOISIS (Y#2O#3 ET AL#2O#3) DE FACON A DENSIFIER LA CERAMIQUE SANS ALTERER SES CARACTERISTIQUES (TENUE A L'OXYDATION, AUX CHOCS THERMIQUES ET A LA CORROSION PAR L'ALUMINIUM LIQUIDE). LE NITRURE DE SILICIUM AINSI OBTENU EST FINALEMENT CARACTERISE (PROPRIETES MECANIQUES, RESISTANCE A LA CORROSION) AFIN D'ETABLIR D'ETROITES CORRELATIONS ENTRE CONDITIONS D'ELABORATION, MICROSTRUCTURE ET PROPRIETES

Download or read book Electrophoretic Deposition of Nanomaterials written by James H. Dickerson and published by Springer Science & Business Media. This book was released on 2011-09-18 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of contemporary basic research, emerging technology, and commercial and industrial applications associated with the electrophoretic deposition of nanomaterials. This presentation of the subject includes an historical survey, the underlying theory of electrophoresis, dielectrophoresis, and the colloidal deposition of materials. This is followed by an assessment of the experimental equipment and procedures for electrophoretic and dielectrophoretic aggregation, manipulation, and deposition of nanoparticles, nanotubes, and other nanomaterials. Additional chapters explore the specific science and technology of electrophoretic film formation, using widely studied and application-driven nanomaterials, such as carbon nanotubes, luminescent nanocrystals, and nano-ceramics. The concluding chapters explore industrial applications and procedures associated with electrophoretic deposition of nanomaterials.

Download or read book Wettability at High Temperatures written by N. Eustathopoulos and published by Elsevier. This book was released on 1999-11-24 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Special Welding Techniques written by and published by . This book was released on 1955 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electric Field Applications written by Takao Tsuda and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative review brings scientists up-to-date with the exciting recent developments in modern electric field applications and highlights their benefits compared with other methods. In Part 1 the book opens with a complete account of electrochromatography - a state-of-the-art technique that combines chromatography and electrophoresis. It reveals how you can achieve first-class separations in numerous analytical and biochemical applications. Part 2 focuses on the unique characteristics of electroprocesses in industry, and several examples, such as electroosmotic dewatering, new electro-rheological fluid technologies and demulsification processes in the car and oil industries, are given. The role of the electric field in chemical processes is discussed in Part 3. The chapters explore its use in concentration processes, immunoassay and molecular orientation methods, and important examples are presented in each case. This book is essential reading for analytical chemists, applied chemists and chemical engineers working in research and development wishing to keep up with this dynamic field.

Download or read book Ceramic Microstructures written by Antoni P. Tomsia and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 841 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume, titled Proceedings of the International Materials Symposium on Ce ramic Microstructures: Control at the Atomic Level summarizes the progress that has been achieved during the past decade in understanding and controlling microstructures in ceram ics. A particular emphasis of the symposium, and therefore of this volume, is advances in the characterization, understanding, and control of micro structures at the atomic or near-atomic level. This symposium is the fourth in a series of meetings, held every ten years, devoted to ceramic microstructures. The inaugural meeting took place in 1966, and focussed on the analysis, significance, and production of microstructure; the symposium emphasized the need for, and importance of characterization in achieving a more complete understanding of the physical and chemical characteristics of ceramics. A consensus emerged at that meeting on the critical importance of characterization in achieving a more complete understanding of ceramic properties. That point of view became widely accepted in the ensuing decade. The second meeting took place in 1976 at a time of world-wide energy shortages and thus emphasized energy-related applications of ceramics, and more specifically, microstructure-property relationships of those materials. The third meeting, held in 1986, was devoted to the role that interfaces played both during processing, and in influencing the ultimate properties of single and polyphase ceramics, and ceramic-metal systems.