It has been proved that rare earth La also pe-rmeates into the layer and acts as an alloying element during the process of ni-tro-carbo-boronizing witn ion microanalysis.

 
  • 使材料的耐磨性、耐蚀性获得了明显提高,离子探针检测证实,稀土元素镧也渗入了钢的表面,起到了微合金化的作用。
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