NASA Technical Reports Server (NTRS) : An pdf

NASA Technical Reports Server (NTRS) : An

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A duplex silicon-slurry/aluminide coating has been developed and cyclically tested in Mach 1 combustion gases for oxidation and thermal fatigue resistance at 1093 C and in Mach 0.3 gases for hot-corrosion resistance at 900 C. The base-metal superalloys were VIA and B-1900. The coated B-1900 specimens performed much better in oxidation than similar specimens coated with aluminides and almost as well as the more-expensive Pt-Al and MCrAlY (where M is Ni and/or Co) coatings deposited by the physical vapor deposition process. The coating also provided good hot-corrosion protection. Metallographic, X-ray, and electron microprobe studies were made to characterize the coating, determine failure mechanisms, and study some of the changes due to exposure

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 7/1/1979
• Year: 1979
• Book Topics/Themes: NASA Technical Reports Server (NTRS), ALUMINUM COATINGS, GAS TURBINE ENGINES, HEAT RESISTANT ALLOYS, PROTECTIVE COATINGS, SILICONIZING, CORROSION PREVENTION, LOW COST, NICKEL ALLOYS, OXIDATION RESISTANCE, THERMAL FATIGUE, X RAY ANALYSIS, Young, S. G., Deadmore, D. L

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