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研究结果表明，镧的加入可以改善合金层中碳化物分布状态，细化晶粒，净化铁液，减少夹杂物的数量，增加合金层的厚度，并且使合金层的耐磨性得到提高
The results show that the addition of lanthanum can improve the carbide distribution in the alloy layer, refine the grains, purify the molten iron, reduce the amount of inclusions, increase the thickness of the alloy layer, and improve the wear resistance of the alloy layer