NiCrBSiMo激光熔覆层腐蚀磨损交互作用的定量分析  

Quantitative analysis on interaction between corrosion and wear of NiCrBSiMo laser cladded coatings

作　　者：孙磊[1] 原津萍[1] 赵军军[1] 梁志杰[1] 

机构地区：[1]装甲兵工程学院装备再制造工程系,北京100072

出　　处：《焊接学报》2012年第9期105-108,118,共4页Transactions of The China Welding Institution

摘　　要：采用CO2激光器在45CrNi钢表面制备了5种不同钼含量的镍基合金激光熔覆层,借助球盘式摩擦磨损试验机对NiCrBSiMo激光熔覆层的腐蚀磨损性能进行了测试并对腐蚀磨损的交互作用进行了定量分析.结果表明,镍基合金中加入钼,可以提高熔覆层的腐蚀磨损性能.熔覆层因腐蚀磨损导致的材料失重主要归因于纯磨损和腐蚀磨损的交互作用.交互作用引起的失重约占总失重的24%～56%,纯腐蚀引起的失重可忽略不计.腐蚀磨损中的磨损失重是纯磨损失重的1.3～2.3倍,磨损增量超过交互作用总量的99%;腐蚀磨损中的腐蚀失重是静态腐蚀失重的1.4～2.7倍,但其量很小.Five kinds of Ni-based alloy coatings with 0,2.5%,5%,7.5% and 10% Mo were prepared on the surface of 45CrNi steel plates by using CO2 laser cladding equipment.The weight losses of corrosive wear in 3.5%NaCl solution of NiCrBSiMo laser cladded coatings were tested with a ball-on-disc wear tester.By means of tests and calculations,the weight loss of corrosion,wear and the components of interaction during corrosive wear tests were analyzed quantitatively.The results show that the total weight loss induced by corrosive wear is composed of the weight loss induced by simple wear and interaction.At the same time,the weight loss induced by interaction occupies about 24%~56% in the total weight loss.Whereas,the weight loss induced by simple corrosion can be neglected.Moreover,the weight loss of coatings induced by wear under corrosive wear is 1.3~2.3 times compared to that of simple wear and the increased weight loss of wear induced by corrosion which occupies more than 99% in the total weight loss induced by interaction.The weight loss of coatings induced by corrosion under corrosive wear is 1.4~2.7 times compared to that of corrosion in the pure condition and both of values are small.

关 键 词：激光熔覆 腐蚀磨损 交互作用 定量 

分 类 号：TG113.24[金属学及工艺—物理冶金]