Special reagent consists of 1 part 90% lactic acid, 1 part 70% nitric acid, and 4 part, 37% hydrochloric acid. Solution etches parent and weld metals at same rate, without overetching. Underlying grain structure of both metals is revealed.
Etchant for incoloy-903 welds
NASA Tech Briefs ; 5 , 1
1980-08-01
Miscellaneous
No indication
English
Engineering properties of Incoloy-903 and CTX-1
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