Causes of metal hydrogen embrittlement and methods to remove hydrogen embrittlement In any electroplating solution, due to the dissociation of water molecules, there is always a certain amount of hydrogen ions present. Therefore, during the electroplating process, while the metal is precipitated at the cathode (the main reaction), it is accompanied by the hydrogen gas evolution (side reaction). The impact of hydrogen evolution is manifold, the most important of which is hydrogen embrittlement. Hydrogen embrittlement is one of the most serious quality hazards in surface treatmen…