Accession Number:

AD0701076

Title:

ALLEVIATION OF THE SILICIDE PEST IN A COATING FOR THE PROTECTION OF REFRACTORY METALS AGAINST HIGH TEMPERATURE OXIDATION.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS

Personal Author(s):

• Falco,Joseph J.
• Levy,Milton

Report Date:

1969-12-01

Pagination or Media Count:

13.0

Abstract:

Pure and alloyed silicide coatings offer some of the most promising means of protecting the refractory metals from high temperature oxidation. In the intermediate temperature range, however, they are prone to rapid disintegration of the bulk material which has been termed silicide pest. Studies of the mechanisms of protection and failure of a modified disilicide coating for a 90Ta-10W alloy have evolved a simple method for alleviating the silicide pest by a preoxidation treatment. Author

Descriptors:

• (*REFRACTORY METAL ALLOYS
• *CORROSION INHIBITION)
• (*SILICON COATINGS
• CORROSION INHIBITION)
• SILICIDES
• OXIDATION
• DIFFUSION COATING
• TANTALUM ALLOYS
• TUNGSTEN ALLOYS

Subject Categories:

• Coatings, Colorants and Finishes
• Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE