Accession Number : AD0843107

Title :   Chemically Activated Pressure Sintering of Oxides.

Descriptive Note : Technical summary rept. Jul 66-31 Oct 67,

Corporate Author : CORNELL UNIV ITHACA NY DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s) : Scala, E. ; Schaeffer, N. C. ; Penty, R. A.

Report Date : MAY 1968

Pagination or Media Count : 72

Abstract : Investigations into processing, manufacture, and testing of the MgO matrix have been made. Single crystal whiskers, fibers, and metallic wires have been incorporated into a magnesium oxide ceramic. The diametral strength of the composites is half the pure Magnesium oxide strength. The fracture mode is changed from intergranular with pure Magnesium oxide to a mixture of transgranular and intergranular on addition of fibers. Increasing the fiber content appears to increase the proportion of transgranular fracture.

Descriptors :   (*REFRACTORY MATERIALS, MAGNESIUM OXIDES), (*MAGNESIUM OXIDES, COMPOSITE MATERIALS), HIGH TEMPERATURE, SLURRY COATING, REINFORCING MATERIALS, SINTERING, WHISKERS(CRYSTALS), MIXTURES, GRAPHITE, NICKEL, PLATINUM, STAINLESS STEEL, WIRE, MICROSTRUCTURE, ELECTRON MICROSCOPY, MECHANICAL PROPERTIES, FRACTOGRAPHY.

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials
      Fabrication Metallurgy
      Elastomers and Rubber

Distribution Statement : APPROVED FOR PUBLIC RELEASE