Accession Number : AD0665978

Title :   DIFFUSION STUDIES IN REFRACTORY MATERIALS.

Descriptive Note : Summary rept. 1 Mar 67-29 Feb 68,

Corporate Author : AVCO MISSILES SPACE AND ELECTRONICS GROUP LOWELL MASS AVCO SPACE SYSTEMS DIV

Personal Author(s) : Wuensch,B. J. ; Vasilos,T.

Report Date : 29 FEB 1968

Pagination or Media Count : 34

Abstract : Progress is described in a study of the effect of extrinsic influences on diffusion rates in ceramic oxides. The objectives of the program are to (1) determine the origin of enhanced grain boundary diffusion, (2) determine the effect, if any, of imposed stress on diffusion in single crystals, and (3) determine rates for specific impurity cations including some whose segregation and precipitation is known to influence transport and mechanical properties. (Author)

Descriptors :   (*REFRACTORY MATERIALS, *DIFFUSION), REPORTS, CERAMIC MATERIALS, SINGLE CRYSTALS, GRAIN BOUNDARIES, STRESSES, IMPURITIES, IONS, TRANSPORT PROPERTIES, MECHANICAL PROPERTIES, NICKEL, ZINC, ZINC COMPOUNDS, ANISOTROPY, MAGNESIUM, CALCIUM, MAGNESIUM COMPOUNDS, HIGH TEMPERATURE, KINETIC ENERGY, DEFORMATION, DISLOCATIONS, DEFECTS(MATERIALS)

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE