超微碳化钼涂层的制备及其耐磨性能的研究  

THE PREPARATION OF ULTRAMICRO MOLYBDENUM CARBIDE COATING AND STUDY ON ITS WEAR PROPERTIES

作　　者：任宝江[1] 

机构地区：[1]金堆城钼业股份有限公司金属分公司,陕西西安710077

出　　处：《中国钼业》2012年第1期49-52,共4页China Molybdenum Industry

摘　　要：以Ni60为粘结金属,在其中分别加入5%(质量分数,下同)、10%和15%的超微碳化钼粉体,利用等离子喷涂方法在40Cr钢基体表面形成热喷涂层。通过对涂层在300 N压力、干磨2 h的试验条件下进行磨损试验,研究了超微碳化钼涂层的耐磨性能。试验结果表明,超微碳化钼粉体的加入显著提高了涂层的耐磨性,并且涂层的耐磨性随碳化钼粉体加入量的增加而提高,其原因主要在于超微碳化钼颗粒在涂层中的弥散强化和自润滑作用。The ultramicro molybdenum carbide coating was formed on the 40Cr steel base using plasma spray method by mixing Ni60 alloy powders and ultramicro molybdenum carbide powders of 5 wt.%, 10 wt.% and 15 wt.% respectively. Coating abrasion test under the condition of dry - grinding, 2 h wear time, and 300 N test load showed that the wear resistance property of coating added with ultramicro MoC powders could be improved greatly, and the wear resistance property of coating improves with the increase of ultramicro MoC content. The wear mechanisms of ultramicro MoC coating is mainly plough wear and flaking wear assisted. In the abrasion process, the evenly distributed ultramicro MoC particles play the dispersion strengthening and selflubricating role in the coating.

关 键 词：超微 碳化钼 涂层 制备 耐磨性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]