等离子表面钨钼稀土(钇)合金强化层滑动磨损性能

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。

Sliding wear-resistance of strengthening layer with W-Mo containing rare earth Y on steel Q235 by plasma surface alloying technique

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.