STUDY OF DUCTILE COATINGS FOR THE OXIDATION PROTECTION OF COLUMBIUM AND MOLYBDENUM ALLOYS.
Bimonthly progress rept. no. 1, 1 July-31 Aug 63,
METAL HYDRIDES INC BEVERLY MASS
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Present day oxidation resistant coatings for columbium and molybdenum base alloys are defi cient in ductility. Feasibility of developing ductile coatings for service to 3000 F is being explored, initially based on the use of platinum metals. Development of suitable diffusion bar riers is required if platinum metals are to be successful. Literature review of the performance of present day coatings and platinum metals has been conducted. Review of diffusion barrier lit erature has begun. Equipment for screening oxidation tests has been set up and calibrated. Weight loss tests for platinum metals are under way. Columbium FS85 alloy and molybdenum TZM base metals have been ordered along with platinum coating metals. A testing and evaluation program to produce and screen potentially useful compos ites is presented. Author