New technique for preparation of metallographic samples makes interpretation of images of pores and microcracks more reliable. Involves use of vacuum epoxy infiltration and interference-film coating to reduce uncertainty. Developed for inspection of plasma-sprayed ceramic thermal-barrier coatings on metals but applicable to other porous, translucent materials, including many important ceramics.
Improved Metallography Of Thermal-Barrier Coatings
NASA Tech Briefs ; 15 , 4
1991-04-01
Miscellaneous
No indication
English
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