Hydrogen Entry into Steel in Ammonium Thiocyanate Solution

Abstract

The hydrogen absorption process for conducting hydrogen embrittlement tests is either immersion in a solution of ammonium thiocyanate or electrochemical reaction. Hydrogen entry into steel was measured to investigate these hydrogen absorption processes by using an electrochemical method. The hydrogen entry into steel caused by an electrochemical reaction in an alkali solution is at the same level of that caused by immersion in an ammonium thiocyanate solution. The electrochemical reaction in an alkali solution enables steel to absorb hydrogen without changing the steel surface condition.