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Development of Protective Coatings for Chromium-Base AlloysChromium alloy sheet was clad with 5 to 10-mil-thick oxidation-resistant nickel-base alloy foils. Specimens also contained 1/2 to 1-mil-thick intermediate layers of platinum, tungsten, and/or W-25Re. Cladding was done by the isostatic hot gas-pressure bonding,.process. The clad chromium-alloy specimens were cyclic oxidation tested at 2100 F and 2300 F for up to 200 hours to determine the effectiveness of these metal claddings in protecting the chromium alloy Cr-5W from oxidation and contamination. Cladding systems consisting of 5-mil-thick Ni-20Cr-20W modified with 3 to 5 weight percent aluminum and containing a 1 /2-mil tungsten diffusion barrier demonstrated potential for long-time service at temperatures as high as 2300 F.
Document ID
20000113406
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
English, J. J. (Battelle Memorial Inst. Columbus, OH United States)
MacMillan, C. A. (Battelle Memorial Inst. Columbus, OH United States)
Williams, D. N. (Battelle Memorial Inst. Columbus, OH United States)
Bartlett, E. S. (Battelle Memorial Inst. Columbus, OH United States)
Date Acquired
August 19, 2013
Publication Date
July 20, 1966
Subject Category
Metals And Metallic Materials
Report/Patent Number
PB2000-0721082
Funding Number(s)
CONTRACT_GRANT: NAS3-7612
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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