Through many comparative experiments, the chemical polishing corrosion method was explored in order to showing nitriding depth, by which can increase the measuring accuracy and be cost-effective.

• 笔者进行了大量的对比试验，采用化学抛光腐蚀的方法，改善了氮化层深度的显示效果，提高了检测精度，节约了资金。