Accession Number:
AD0296760
Title:
HIGH-TEMPERATURE OXIDATION PROTECTIVE COATINGS FOR VANADIUM-BASE ALLOYS
Descriptive Note:
Corporate Author:
IIT RESEARCH INST CHICAGO IL
Personal Author(s):
Report Date:
1963-02-09
Pagination or Media Count:
19.0
Abstract:
Processing variables relating to the packsiliconizing of V-5wo Ti- 20wo CB and V-1wo Ti-60wo Cb are being studied. Samples coated at 2010, 2190, and 2370 F show that coating growth rate is time dependent up to 16 hnd no failures have been observed after 15 to 35 hours in 2200 F air. Tensile and other specimens of V-1wo Ti-60wo Cb have been packsiliconized for evaluation by aerospace and other organizations. Compounds of V-Cb-Ni were flame-sprayed on V-1wo Ti 60wo Cb, but excessive porosity caused rapid failure in 2000 and 2200 F air. Diffusion couples of nickel and the V-Cb-Ti allurs Silicide coatings have been applied to eleven vanadium alloys currently under development, and no failures have been observed after 15 to 35 hours in 2200 F air. Tensile and other specimens of V-1wo Ti-60wo Cb have been packsiliconized for evaluation by aerospace and other organizations. Compounds of V-Cb-Ni were flame-sprayed on V-1wo Ti 60wo Cb, but excessive porosity caused rapid failure in 2000 and 2200 F air. Diffusion couples of nickel and the V-Cb-Ti alloy were reacted at 2000 and 2200 F for 24 and 8 hours, respectively, with very slight hardening of the vanadium alloy.
Descriptors:
Subject Categories:
- Adhesives, Seals and Binders