Summary for kovar etchant Discussion
Kovar etchant is the main issue in this short thread about revealing a Kovar-to-Kovar weld specimen. Deborah Graves asks what etchant should be used to view the weld. Tess Molina replies with a specific sequence: try Marble's Reagent for 3 seconds on the dry part, followed by Nital for 3 seconds. The answer is brief and practical, suggesting a two-step etch rather than a single etchant. No other methods or cautions are discussed in the excerpt, so the thread mainly serves as a concise recommendation from Tess Molina for metallographic viewing of the weld structure.
Q. Would like to know what etchant to use to view a Kovar to Kovar weld specimen.
Deborah Graves
ceramic science – San Juan Capistrano, California, USA
2004
A. Try Marble’s Reagent, 3 secs, dry part;
followed by Nital, 3 secs.
Tess Molina
– Hawthorne, California
November 2, 2016