Deformation of Covalent Crystals.- Electronic Effects on Plasticity of Covalently Bonded Materials.- Dislocation Dynamics in Silicon under High Stress.- Kink Mobility and Dislocation Velocity in Covalent Crystals.- Plastic Deformation of Intrinsic and Extrinsic Silicon Below 500°C.- Plastic Deformation of Transition Metal Carbides.- Dislocation Structures in Polycrystalline Tungsten Hemicarbide W2C Deformed at High Temperatures.- Plasticity of WC Materials by T.E.M. Investigations.- The Occurrence and Behavior of Dislocations during Plastic Deformation of Selected Transition Metal and Silicon Carbides.- Structure of Dislocations in Oxides.- Deformation of Oxide Crystals.- The Effects of Nonstoichiometry on the Deformation of Oxides.- High Temperature Deformation Mechanisms in MgO.n Al2O3 Spinels.- Slip Systems in Manganese Zinc Ferrite Crystals.- Plastic Deformation of Oxides with Garnet Structure.- Deformation and Diffusion in Sapphire (?-Al2O3).- T.E.M. Observations of Dislocations in Al2O3 after Prism Plane Slip at Low Temperature under Hydrostatic Pressure.- Processes Controlling the Dislocation Mobility in MgO Single Crystals Containing Aliovalent Cationic Impurities.- Deformation Twinning in Ceramics.- Deformation of Silicate Minerals.- High Temperature Creep of Silicate Olivines.- Influence of pO2 and pH2O on the High Temperature Plasticity of Olivine.- A TEM Microstructural Study of Experimentally Deformed Anita Bay Dunite.- Distribution of Strain in Some Geological Materials Experimentally Deformed at High Pressure and Temperature.- Plastic Deformation of Al2SiO5 Polymorphs, Influence of Strain on their Polymorphic Transformations.- Creep of Polycrystalline Ceramics.- Creep of Doped Polycrystalline Magnesium and Aluminum Oxides.- Superplastic Flow in Ceramics Enhanced by a Liquid Phase.- Creep Phenomena in Reaction Bonded and Sintered Silicon Nitrides.- High Temperature Creep of Dense Fine Grained Silicon Carbides.- Plastic Deformation of Mg-Doped Fine-Grained Aluminum Oxide.- Deformation Structures in Polycrystalline CaO.- Plastic Deformation and Hardening of Polycrystalline Halides.- Deformation Processing of Cesium Iodide Crystals.- High Temperature Creep of Pure Tungsten Carbide and WC-Co Alloys with Low Cobalt Volumic Ratios.- Plastic Flow of Plasma Sprayed Ceramics.- Creep Crack Growth and Failure in Ceramics.- High Temperature Failure Mechanisms in Ceramic Polycrystals.- Models for Creep Crack Growth.- Effects of Cracks on Mechanisms and Kinetics of Creep Deformation of Brittle Ceramics.- The Kinetics of Time Dependent Plastic Flow and Fracture in Ceramic Materials.- Characterization of Cracks Subject to Creep.- Regimes of Creep and Slow Crack Growth in High-Temperature Rupture of Hot-Pressed Silicon Nitride.- Creep Cavitation and Crack Growth in Silicon Nitride.- High-Temperature Creep and Fracture of ??Si3N4 Ceramic Alloys.- Creep and Creep Rupture of HP-SiC Containing an Amorphous Integranular Phase.- Crack Growth in Al2O3 with 3 wt% Glassy Phase.- Crack Resistance of Predeformed NaCl Single Crystals.- The Elastic-Plastic Crack Propagation in Ceramic Materials: Theory and Test.- Near Surface Phenomena.- Changing the Surface Plasticity and Hardness of Sapphire by Ion-Implantation.- Deformation-Induced Crack Initiation by Indentation of Silicate Materials.- Induced Plastic Deformation of Zirconia.- An Elastic Failure Model of Indentation Damage.- Plastic Deformation During the Abrasive Wear of Ceramics.- Compaction of Powders. II Thoria.- Contributors.
This volume "Deformation of Ceramic Materials II" constitutes the proceedings of an international symposium held at The Pennsyl vania State University, University Park, PA on July 20, 21, and 22, 1983. It includes studies of semiconductors and minerals which are closely related to ceramic materials. The initial conference on this topic was held in 1974 at Penn State and the proceedings were published in the volume entitled "Deformation of Ceramic Materials." This conference emphasized the deformation behavior of crystals and po1ycrysta11ine and polyphase ceramics with internationally recognized authorities as keynote lecturers on the major subtopics. Several papers dealing with cavity nucleation and creep crack growth represent a major new research thrust in ceramics since the first conference. This collection of papers represents the state-of-the art of our understanding of the plastic deformation behavior of ceramics and the crystals of which they are composed. We are grateful for the suggestions of our International Advisory Committee .in recommending experts in their respective countries to participate. We are particularly grateful that the organizers of the previous Dislocation-Point Defect Interaction Workshops agreed to participate in the Penn State Symposium as an alternative at the suggestion of Prof. A. H. Heuer. We acknowledge the financial support of the National Science Foundation for this conference.
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