Accession Number : AD0444829


Title :   STUDIES OF THE BRITTLE BEHAVIOR OF CERAMIC MATERIALS.


Descriptive Note : Final rept., 15 Jan 63-15 Feb 64,


Corporate Author : IIT RESEARCH INST CHICAGO ILL


Personal Author(s) : Parikh,N M


Report Date : Jun 1964


Pagination or Media Count : 409


Abstract : This report rep9esents a joint effort of investigators on the broad subject of fundamental factors affecting the brittle behavior and strength of ceramic oxides. The materials used in this investigation were in single crystal as well as polycrystalline forms of MgO and Al2O3. The work on individual studies includes: (Task 2)-Strain Rate Effects, (Task 5)-Internal Friction and Creep in Polycrystalline Al2O3, (Task 6)-Effect of Surface Energy, (Task 7)-Fracture Mechanisms, (Task 8)-Effect of Impurities on the Properties of Ceramics, (Task 10)-Effects of Thermal-Mechanical History on the Mechanical Properties of Ceramics, (Task 6)-Effects of Polyaxial Stresses, (Task 20)-Influence of Surface Conditions on Strength of Oxides, (Task 2)-Residual Stresses in Oxide Ceramics, (Task 22)-Strength-grain Size-Porosity Relations in Al2O3, and (Task 23)Hot Extrusion. (Author)


Descriptors :   *CERAMIC MATERIALS , *MAGNESIUM COMPOUNDS , *ALUMINUM COMPOUNDS , BRITTLENESS , BRITTLENESS , BRITTLENESS , OXIDES , REFRACTORY MATERIALS , FRACTURE(MECHANICS) , SURFACE PROPERTIES , CREEP , INTERNAL FRICTION , DEFORMATION , STRESSES , POROSITY , GRAIN STRUCTURES(METALLURGY) , EXTRUSION , STRAIN(MECHANICS) , GLASS , SAPPHIRE , CRYSTALS , SINGLE CRYSTALS , CHEMICAL MILLING , ABRASIVES , HIGH TEMPERATURE , MANUFACTURING , MEASUREMENT , MECHANICAL PROPERTIES


Distribution Statement : APPROVED FOR PUBLIC RELEASE