It’s not like etching with hydrochloric acid and peroxide is anything new ... including the messy old standby etchant ferric chloride, or even [Sebastian]’s preferred sodium persulfate ...

The process starts with rust, or ferric oxide, which can either be purchased or made. [Chase] chose to make his rust by soaking steel wool in a solution of saltwater and peroxide and heating the ...

Prolonged exposure to 5 % HCl significantly impacts SS 304's microstructure and mechanical properties, emphasizing the need for effective corrosion protection.