Accession Number : AD0678610

Title :   MECHANISMS OF OXIDATION OF Ta-10W ALLOY COATED WITH WSi2.

Descriptive Note : Final rept. 21 Apr 67-21 Apr 68,

Corporate Author : LITTLE (ARTHUR D) INC CAMBRIDGE MASS

Personal Author(s) : Berkowitz,Joan B.

Report Date : 21 APR 1968

Pagination or Media Count : 40

Abstract : Continuous oxygen consumption measurements have been made on two commercially available tungsten/silicon type coatings at temperatures between 1000 and 1800C and an oxygen partial pressure of 150 torr in helium. The coatings were applied to small cylindrical pellets of Ta-10W. The coated samples undergo significant changes in properties if pre-heated in non-oxidizing atmospheres. (Author)

Descriptors :   (*REFRACTORY COATINGS, HIGH TEMPERATURE), (*INTERMETALLIC COMPOUNDS, *CORROSION INHIBITION), TUNGSTEN ALLOYS, SILICIDES, PHOTOMICROGRAPHY, ELECTRON MICROSCOPY, GRAIN STRUCTURES(METALLURGY), OXIDATION, CRYSTAL STRUCTURE

Subject Categories : Ceramics, Refractories and Glass
      Properties of Metals and Alloys
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE