New etching solution for chemical penetrant inspection of Inconel(R) 718 castings and weldments. Etchant does not introduce artifacts mistaken for defects. Applied by swabbing or by immersion. Used to detect unwanted residues of Nioro(R) (or equivalent) gold brazing alloy on type 347 stainless steel.
Milder Etchant For Penetrant Inspection
NASA Tech Briefs ; 14 , 9
1990-09-01
Miscellaneous
No indication
English
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