HIGH-TEMPERATURE OXIDATION PROTECTIVE COATINGS FOR VANADIUM-BASE ALLOYS.
Abstract
The objective of this program is the development of oxidation protective coatings for vanadium-base alloys for use at 1800F to 2500F. The effect of pack-siliconizing on the mechanical properties of 0.020 in. thick sheet of V-60 w/o Cb--1 w/o Ti is being studied. Preliminary results indicate that the siliconizing process has no effect on strength, but causes some reduction in tensile ductility. The transition temperature of the coated alloy is below +32F; its lower limit is currently being determined. The development of an oxidation resistant slurry or liquid cementation type of coating for V-60 w/o Cb - 1 w/o Ti is progressing. Slurry compositions containing tin, silicon, silver, copper, aluminum, and columbium have been investigated; several of these show good coverage, even at corners and edges. The static oxidation life of other promising vanadium-base alloys, coated by the pack-siliconizing process is also being investigated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1964
- Accession Number
- AD0603774
Entities
People
- John J. Rausch
- Larry I. Kane
Organizations
- IIT Research Institute