High Temperature Oxidation and Corrosion of In-Situ Composite Alloys.
Final rept. 1 Jan 75-31 Dec 77,
LIVERPOOL UNIV (ENGLAND) DEPT OF METALLURGY AND MATERIALS SCIENCE
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The high temperature oxidation and corrosion behavior of a number of direction-ally solidified eutectic alloys were studied in the temperature range 1600-2000 Degrees F these include gammagamma prime-delta alloys and alloys containing Tantalum Carbide or Cr Sub 7 C sub 3 fibers. With all the alloys the important factor appears to be whether or not a fiber-free zone is established between the surface scale and the alloy eutectic structure, and this in turn depends in a complex way on temperature, the degree of alignment and spacing of the eutectic, and the composition of the alloy. Tantalum Carbide fibers are very oxidation prone, and alloys containing this phase have poor overall resistance Cr sub 7 C sub 3 or delta Ni sub 3 Nb are not as detrimental. Author
- Laminates and Composite Materials
- Properties of Metals and Alloys