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采用硝酸-硫酸铁腐蚀试验，扫描电镜（SEM）、电子探针（EPM）等方法研究了气相扩渗稀土（La、Ce）对1Cr18Ni9钢晶间腐蚀性能的影响．结果表明，扩渗后倒在面几乎不存在贫Cr区，耐晶同腐蚀性能明显改善，超过经稳定化处理的1Cr18Ni9Ti钢水平．
The effect of rare earth (La, Ce) on the intergranular corrosion resistance of 1Cr18Ni9 steel was studied by nitric acid-ferric sulfate corrosion test, scanning electron microscope (SEM) and electron probe (EPM) The results show that there is almost no Cr-depleted area after pouring, and the resistance to crystal corrosion obviously improves, which surpasses that of stabilized 1Cr18Ni9Ti steel.