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Behavior of Ceramics at 1200° C in a Simulated Gas Turbine Environment
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Abstract
This report summarizes programs at the NASA Lewis Research Center evaluating several classes of commercial ceramics, in a high gas velocity burner rig simulating a gas turbine engine environment. Testing of 23 ceramics in rod geometry identified SiC and Si3N4 as outstanding in resistance to oxidation and thermal stress and identified the failure modes of other ceramics. Further testing of a group of 15 types of SiC and Si3N4 in simulated vane shape geometry has identified a hot pressed SiC, a reaction sintered SiC and hot pressed Si3N4 as the best of that group. SiC and Si3N4 test specimens were compared on the basis of weight change, dimensional reductions, metallography, fluorescent penetrant inspection, X-ray diffraction analyses, and failure mode.
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Sanders, W. and Probst, H., "Behavior of Ceramics at 1200° C in a Simulated Gas Turbine Environment," SAE Technical Paper 740240, 1974, https://doi.org/10.4271/740240.Also In
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