恒电位示差浸蚀法显示金相组织是较先进的金相浸蚀技术,国内外一些先进厂家正在推广应用。我们用恒电位示差浸蚀法对碳钢、低合金钢、弹簧钢、轴承钢,高速钢、硼钢、铸铁以及巴氏合金等八种金属材料,十五个牌号,三十个试样,在热轧、退火及淬火状态下进行试验。本文介绍试验情况。 Potentiostatic differential etching shows metallographic structure is more advanced metallographic etching technology, some advanced manufacturers at home and abroad are being promoted. We use constant potential differential etching method for carbon steel, low alloy steel, spring steel, bearing steel, high speed steel, boron steel, cast iron and Babbitt eight kinds of metal materials, fifteen grades, thirty samples, In the hot-rolled, annealed and quenched state test. This article describes the test situation.