METHOD FOR ETCHING TIN BRONZES Russian patent published in 2006 - IPC G01N1/32 

FIELD: technology for researching prepared sections made of tin bronzes by means of chemical effecting on researched surface of material.

SUBSTANCE: method for etching tin bronzes for detecting structure of section includes preliminarily grinding and polishing of section surface. Etching of section is performed by 1% solution of chlorine copper in hydrochloric acid. Section is dipped into tub with etching agent for 40-80 seconds, then pulled out and dipped into tub with water, pulled out of water and dried by blotting paper and again dipped into etching agent, but with lesser exposure of 1-10 sec, repeating procedure with lesser delay until producing monotonously dark color of matrix.

EFFECT: simplified procedure, lower costs.

4 dwg