CAJ | 학술논문

采用超音速火焰喷涂工艺制备了cocrw涂层，利用金刚石锥体为摩擦副，通过往复式磨损试验机测试了涂层在室温和600℃时的磨损性能，分析了涂层的磨损机理。结果表明：在室温和600℃两种温度条件下，磨损量均随着载荷的增大而增加，而涂层在同一载荷作用下，室温和600℃两种温度下的磨损量较为接近。磨损形貌则表现为磨损初期呈现明显的犁削沟槽、小片状残留物、还有小凹坑；磨损较长时间后则显示明显的粘着磨损形貌和涂层颗粒脱落坑特征。
채용초음속화염분도공예제비료cocrw도층，이용금강석추체위마찰부，통과왕복식마손시험궤측시료도층재실온화600℃시적마손성능，분석료도층적마손궤리。결과표명：재실온화600℃량충온도조건하，마손량균수착재하적증대이증가，이도층재동일재하작용하，실온화600℃량충온도하적마손량교위접근。마손형모칙표현위마손초기정현명현적리삭구조、소편상잔류물、환유소요갱；마손교장시간후칙현시명현적점착마손형모화도층과립탈락갱특정。
CoCrW coating was manufactured by HVOF spraying in this paper. A diamond cone with 120 ( ° )was used as the counterbody. The CoCrW coatings were subjected to wear test by reciprocal wear tester at room temperature and 600℃ respectivelyo Wear mechanisms of HVOF sprayed CoCrW coatings were analysised. The results indicate that volume losses increase with load .Whereas ,the volume losses between room temperature and 600℃ of CoCrW coating are closer to each other at the same load. SEM investigation of the morphology of the wear scar of the HVOF sprayed CoCrW coatings showed evidently severe plowing, some small pieces of loose debris (adhered pull-outs) and small grooves from the beginning of the wear test. There were pronounced evidences of adhesive wear and pores resulting from particles pull-out after longer wear.