Accession Number:

AD0619286

Title:

STUDY OF DUCTILE COATINGS FOR THE OXIDATION PROTECTION OF COLUMBIUM AND MOLYBDENUM ALLOYS.

Descriptive Note:

Bimonthly progress rept. no. 1, 1 Mar-30 Apr 65,

Corporate Author:

METALS AND CONTROLS INC ATTLEBORO MASS

Personal Author(s):

Report Date:

1965-05-30

Pagination or Media Count:

22.0

Abstract:

Platinum is being investigated as a ductile, oxidation resistant coating for protection of columbium and molybdenum alloys at temperatures to 3000F. While its oxidation resistance has been found to be excellent, its value as a protective coating for the given substrate alloys rapidly deteriorates as a result of platinumsubstrate alloy interdiffusion. It is the prime concern of this contract, therefore, to develop a barrier to this degrading interdiffusion. Twelve materials have been selected for initial evaluation potential diffusion barriers. Roll bonding, hot press bonding, electron beam evaporation and chemical vapor deposition techniques are being used for fabrication of composite coating-barrier-substrate test samples. Screening tests will be conducted in flowing air at 2550F to determine the relative merits of the various coating-substrate combinations. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE