The phases of corrosion products on underground steel tube and their changes with depth of rust layer were analysed using Mossbauer effect, X - ray diffraction and proton X -ray fluorescence analysis.

• 使用穆斯堡尔效应、X射线衍射分析及质子X射线荧光分析法,分析了地下钢管腐蚀产物的相态及其随锈层深度的变化。