多孔YSZ涂层的制备和可磨耗性

发布时间：2018-04-24 18:02

本文选题：等离子喷涂 + YSZ涂层　；参考：《焊接学报》2017年01期

【摘要】：采用等离子喷涂方法在Ni718合金表面制备氧化钇稳定氧化锆(YSZ)涂层,通过在YSZ喷涂粉末中分别加入10%,30%和50%(质量分数,%)表面包覆Ti O2的聚苯酯材料,涂层平均孔隙率从原来的2.1%分别提高到12.3%,28.5%和29.7%,孔隙的平均直径从原来的4.2μm分别变为14.4,18.5和25.4μm.随着孔隙的增多,涂层的表面洛氏硬度下降,同时涂层在刮磨过程中的摩擦力和摩擦系数下降.当孔隙率由2.1%上升到30%左右时,涂层在刮磨过程中的磨耗质量上升3倍左右,相对应的转动销质量损失下降约50%.结果表明,孔隙率的提高使得涂层的可磨耗性上升.
[Abstract]:Yttrium oxide stabilized zirconia (YSZ) coating was prepared on the surface of Ni718 alloy by plasma spraying. By adding 10%, 30% and 50% (mass fraction,%) surface of polyphenyl ester with Ti O2, the average porosity of the coating was increased from 2.1% to 12.3%, 28.5% and 29.7%, respectively, from the original 2.1%. The average diameter of the pores was 4 from the original YSZ. .2 mu m changed into 14.4,18.5 and 25.4 M. respectively. With the increase of pore, the surface Rockwell hardness of the coating decreased, while the friction and friction coefficient of the coating decreased. When the porosity increased from 2.1% to about 30%, the wear quality of the coating increased about 3 times in the scraping process, and the relative quality loss of the corresponding rotating pin decreased by about 50%. The results show that the wear resistance of the coating increases with the increase of porosity.

【作者单位】：中国民航大学天津市民用航空器适航与维修重点实验室;
【基金】：国家自然科学基金青年基金资助项目(51501222) 中央高校基本科研业务经费中国民航大学专项基金资助项目(3122015L001) 中国民航局科技计划资助项目(MHRD20160106)
【分类号】：TG174.4

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