Sintering '85

This volume contains the edited Proceedings of the Sixth World Round Table Conference on Sintering, held in Herceg-Novi, Yugoslavia on September 2-6, 1985. It was organized by the International Institute for the Science of Sintering (IISS), headquartered in Beograd. Every fourth year since 1969, the Institute has organized such a Round Table Conference on Sintering, each has taken place at some selected lo­ cation within Yugoslavia. A separate series of IISS Summer Schools have also been held at four year intervals, but they have been offset by about two years, so they occur between the main Conferences. As a rule, the Summer Schools have been devoted to more specific topics and they also take place in different countries. The aim of these Conferences and their related Summer Schools has been to bring together scientists from allover the world who work in various fields of science and technology concerned with sinter­ ing and sintered materials. A total of six IISS Conferences have been held over the period 1969-1985, and they have been supplemented by the three Summer Schools held in Yugoslavia, Poland and India (in 1975, 1979 and 1983, respectively). This most recent five day Conference addressed the fundamental scien­ tific background as well as the technological state-of-the-art in sintering and sintered materials. It encompassed many of the high technology sintered materials needed for a wide variety of research and industrial applications. Front Matter....Pages i-x Front Matter....Pages 1-1 Towards the Understanding of the Process of Sintering....Pages 3-16 Rate Controlled Sintering Revisited....Pages 17-34 On the Mechanism of Grain Boundary Elimination from Sintering Neck....Pages 35-41 Effect of Particle Size Distribution on Sintering....Pages 43-51 Contribution to Investigation of the Sintering Process from the Point of Sintering Diagrams....Pages 53-57 Dislocation Structure of Nickel Powder and its Role in the Sintering Process....Pages 59-65 Front Matter....Pages 67-67 Twin Formation During Sintering of Micron and Submicron Sized Copper Particles....Pages 69-79 Surface Relaxation, Dynamics of Geometric Structure and Macrokinetics of Densification During Sintering of Ultrafine Powders....Pages 81-87 Theoretical Analysis of Metal Particle Cooling in the Rotating Electrode Process....Pages 89-99 Preparation of Molybdenum Powders by Rotating Electrode Process....Pages 101-108 Variables Influencing the Sintering of MgO....Pages 109-117 Front Matter....Pages 119-119 Activated Sintering....Pages 121-132 Dislocation-Activated Sintering Processes....Pages 133-141 The Dependence of Sinterability of Ni-Added W-Powder Compact on the Contact Neck Size of W-Particles....Pages 143-153 Metal Activated Recrystallization and Creep of Tungsten Fibres....Pages 155-161 Front Matter....Pages 163-163 Macropore Filling During Hot Isostatic Pressing of Liquid Phase Sintered Ceramics....Pages 165-171 Formation of Residual Porosities During Liquid Phase Sintering of W-Ni-Fe....Pages 173-178 Fundamental Study of the Later Stages of Liquid Phase Sintering of A Ni base P/M Superalloy — Metallographic Observations on Quenched Supersolidus — Sintered Materials....Pages 179-188 Observation of Liquid Phase Sintering of a High Speed Steel Powder....Pages 189-196 Front Matter....Pages 197-197 The Processing of a Permalloy-Magnetite Composite by Hydrothermal Reaction Sintering....Pages 199-204 Front Matter....Pages 197-197 Densification During Hot Isostatic Pressing of a High Temperature Ni-Alloy....Pages 205-213 The Preparation of Very Small Grain Size Compacts of Lead Telluride....Pages 215-221 Microstructural Features of Transparent PLZT Ceramics....Pages 223-230 Sintering and Microstructure of PZT-ZrO 2 Composites....Pages 231-237 Front Matter....Pages 239-239 Sintering in Chemically Heterogeneous Systems....Pages 241-249 Calculation of Phase Diagrams....Pages 251-258 Structural Evolution During the Sintering of SnO 2 and SnO 2 -2 Mole % CuO....Pages 259-268 Inhibition of the Grain Growth in PZT Ceramics by Doping with Neodymium Oxide....Pages 269-276 Controlled Grain Growth in Ceramics....Pages 277-280 Influence of Dewatering of the Yttrium-Zirconium Hydroxide Precipitates on the Sintering Behaviour of their Calcined Products....Pages 281-285 Sintering and Microstructure Development in the System BaTiO 3 -CaTiO 3 -TiO 2 ....Pages 287-292 The Influence of Aggregates on the Sintering of MgCr 2 O 4 — TiO 2 Solid Solution....Pages 293-300 The Influence of Sintering Parameters and Subsequent Thermal Treatment on U-I Characteristics and Degradation of ZnO Varistors....Pages 301-308 Sintering of Alumina in Oxygen and Nitrogen Containing Liquids....Pages 309-316 Chemically Driven Pore Growth....Pages 317-323 Magnetic Properties of Sintered Fe-Sn Cores....Pages 325-335 The Influence of Structural Factors on Mechanical Properties of Sintered Materials....Pages 337-342 Sintering of Iron Powder with an Addition of Ferromanganese....Pages 343-356 Front Matter....Pages 357-357 Effect of Additives on the Cold Compaction Behaviour of SiC Powder....Pages 359-370 Sintering of Nonmetallic Nitrides....Pages 371-378 Front Matter....Pages 357-357 New Experimental Data in the C-Fe-W, C-Co-W, C-Ni-W, C-Fe-Ni-W and C-Co-Ni-W Systems Application to Sintering Conditions of Cemented Carbides Optimization of Steel Binder Composition by Partial Factorial Experiments....Pages 379-393 Front Matter....Pages 395-395 International Cooperation in High Technology Ceramics....Pages 397-399 Back Matter....Pages 401-411