烧结铁基材料渗碳或碳氮共渗层深度的测定及其验证
Sintered ferrous materials，carburized or carbonitrided - Determination and verification of case-harding depth
2008-08-11
DIN 30902
Heat treatment of ferrous materials - Light-microscopical determination of the depth and porosity of the compound layer of nitrided and nitro-carburized ferrous parts
黑色金属材料的热处理.氮化和氮碳共渗黑色金属零件复合层深度和孔隙率的光学显微镜测定