HIGH-TEMPERATURE OXIDATION PROTECTIVE COATINGS FOR VANADIUM-BASE ALLOYS
Abstract
Processing variables relating to the packsiliconizing of V-5w/o Ti- 20w/o CB and V-1w/o Ti-60w/o 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-1w/o Ti-60w/o Cb have been packsiliconized for evaluation by aerospace and other organizations. Compounds of V-Cb-Ni were flame-sprayed on V-1w/o Ti 60w/o 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-1w/o Ti-60w/o Cb have been packsiliconized for evaluation by aerospace and other organizations. Compounds of V-Cb-Ni were flame-sprayed on V-1w/o Ti 60w/o 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 09, 1963
- Accession Number
- AD0296760
Entities
People
- F.c. Holtz
- J.j. Rausch
Organizations
- IIT Research Institute