电解试样,将基体铁及其它可溶物与稳定夹杂物分离。提取残渣于硝酸溶液中,用高锰酸钾破坏碳化物,反应生成的二氧化锰沉淀,用过氧化氢破坏。对不溶的稳定夹杂物进行过滤、洗涤、灰化、灼烧、称(恒)重,测定总量,通过熔融测定分量。 Electrolysis samples, the matrix of iron and other solubles and stable inclusions separated. Extract the residue in nitric acid solution, with potassium permanganate destruction of carbides, the reaction of manganese dioxide precipitation, destruction by hydrogen peroxide. Insoluble stable inclusions were filtered, washed, ashed, burned, weighed (constant), the total amount was determined, and the weight was measured by melting.