DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
Development of Improved Coatings for Nickel-and Cobalt-Base Alloys.
Final technical summary rept. 1 Jun 68-31 Jul 70,
TRW EQUIPMENT GROUP CLEVELAND OHIO
Pagination or Media Count:
The purpose of this study was to develop and upgrade aluminum containing coating systems for the protection of nickel and cobalt alloys used in gas turbine hot section components. A comprehensive investigation of modifying elements was undertaken and correlated with hot corrosion resistance and diffusional stability under blade and vane cycle conditions 1950 amd 2200F peak temperatures, respectively. The modifying elements and combinations evaluated were Co, Mn, Cr, Ta, Fe, Mg, Si, Y, Cr-Mn, Co-Cr and Fe-Cr. The influence of the modified coatings on mechanical properties, stress-oxidation, impact and thermal shock of the superalloys was also determined. Author
APPROVED FOR PUBLIC RELEASE