通过在Q235钢表面渗入钨、钼、钇和碳的表面合金化,并进行淬火和回火以强化表面合金层的性能。利用M200滑动磨损实验机进行滑动磨损性能研究进行对比。结果表明：钇的加入可以促进渗层形成足够多的碳化物核心,为碳化物弥散析出创造良好的条件。表面钨钼稀土合金层、表面钨钼合金层、T10钢、M2高速钢（均进行了淬火＋回火的强化处理,下称强化处理）的平均摩擦系数分别为：0.30、0.47、0.57、0.31;表面稀土合金层经强化处理后耐磨性能最好;在干滑动磨损条件下,表面稀土合金强化层的滑动磨损失效形式主要是粘着磨损;加入钇后,试样的摩擦系数降低,显示出优异的耐磨性及良好的减摩性能。
Strengthening layer with W-Mo containing rare earth Y were obtained by double glow plasma surface alloying technology on Q235 steel surface and then quenching and tempering. Sliding wear-resistance of the strengthening layer was studied using a M200 sliding wear experiment device. The results show that Y addition is favorable to the dispersive precipitation of carbides in the strengthening layers. The friction coefficients of the strengthening layer with W-Mo containing rare earth Y, W-Mo alloy strength layer, T10 steel and M2 high speed steel after quenching and tempering are 0. 30, 0. 47, 0. 57 and 0. 31, respectively. The wear mechanism of the strengthening layer containing rare earth Y is mainly adhesive wear, showing excellent wear resistance and good friction properties.
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