Patent ID: 7416623
Filing Date: 2008-08-26
Classification: G01N,Y02E

Abstract:
1. A method for causing intergranular stress corrosion cracking to initiate and grow in a specimen made of a material capable of retaining corrosion resistance through passivation, which comprises bringing said specimen into contact with a solution of a tetrathionate salt while applying a strain to said specimen, such that said intergranular stress corrosion cracking initiates and grows in said specimen, wherein said solution of a tetrathionate salt is an aqueous solution of potassium tetrathionate or of sodium tetrathionate, containing chlorine in a range of from 0.06 to 6 wt. % with a concentration of from 0.3 to 6 wt. % tetrathionate salt, a temperature of from 5 to 60° C., and a pH of from 3 to 6.