Black smut after etched by Bechet and Beaujard solution
Black smut after etched by Bechet and Beaujard solution
(OP)
I found excessive of black smut and some pitting when observed with microscope after etching by Bechet and Beaujard solution at room temperature for 1 hr. My purpose is for observing prior-austenite grain size in quenched&tempered SUP9 spring steel.
Please suggest me how to fix this problem.
Thank you
Please suggest me how to fix this problem.
Thank you





RE: Black smut after etched by Bechet and Beaujard solution
Also you can use ultrasound to remove the smut.
Some etchants recommend the use of a boiling solution for the smut...Can't remember which one that is.
metallographic.com is a good resource.
RE: Black smut after etched by Bechet and Beaujard solution
RE: Black smut after etched by Bechet and Beaujard solution
RE: Black smut after etched by Bechet and Beaujard solution
Thank you