基于响应曲面法的等离子喷涂Ni60CuMo涂层质量优化  

Quality Optimization of Plasma Sprayed Ni60CuMo Coating Based on Response Surface Method

作　　者：楚佳杰 韩冰源[1,2] 李仁兴 高祥涵[1] 丛孟启 吴海东 徐文文 杜伟 CHU Jiajie;HAN Bingyuan;LI Renxing;GAO Xianghan;CONG Mengqi;WU Haidong;XU Wenwen;DU Wei(School of Automotive and Traffic Engineering,Jiangsu University of Technology,Changzhou 213001,Jiangsu,China;National Key Lab for Remanufacturing,Academy of Army Armored Forces,Beijing 100072,China)

机构地区：[1]江苏理工学院汽车与交通工程学院,江苏常州213001 [2]陆军装甲兵学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《材料导报》2024年第3期182-187,共6页Materials Reports

基　　金：江苏省自然科学基金(BK20191036);基础研究项目(JCKY61420051911)。

摘　　要：采用表面工程技术对废旧铝合金活塞进行再制造,可有效延长铝合金活塞服役寿命,同时实现资源的节约与环境污染的降低。为此采用等离子喷涂技术在铝合金109(ZL109)表面制备了Ni60CuMo防护涂层,结合Box-Behnken响应曲面法设计实验对涂层质量进行优化,以孔隙率为响应值,分析了喷涂距离(D)、送粉速率(R)和喷涂功率(P_(1))对涂层孔隙率(P)的影响规律。结果表明:送粉速率对孔隙率的影响最大,在较低的送粉速率、较大的喷涂距离与较小的喷涂功率下涂层孔隙、裂纹更少,涂层质量更优。同时建立的孔隙率响应曲面模型有效,可以用于等离子喷涂Ni60CuMo涂层的质量优化。最低孔隙率的预测参数:喷涂距离D=131.58 mm,送粉速率R=37.01 g·min^(-1)和喷涂功率P 1=31.09 kW,能获得的最小孔隙率为2.5%。The use of surface engineering technology to remanufacture the waste aluminum alloy piston can effectively prolong the service life of the aluminum alloy piston,and at the same time realize the saving of resources and the reduction of environmental pollution.For this purpose,the Ni60CuMo coating was prepared on the surface of aluminum alloy 109(ZL109)by plasma spraying technology,and a Box-Behnken design regression analysis experiments combined with response surface method.Taking the porosity of the coating under different process conditions as the response value,the effects of the three factors of spraying distance(D),powder feeding rate(R)and spraying power(P_(1))on the coating porosity(P)was analyzed.The results show that the powder feeding rate has the greatest influence on the porosity,and the coating quality is better with fewer pores and cracks at lower powder feeding rate,larger spraying distance and smaller spraying power.And the established porosity response surface model is effective and can be used for quality optimization of plasma sprayed Ni60CuMo coatings.The prediction parameters of the minimum porosity are:spraying distance D=131.58 mm,powder feeding rate R=37.01 g·min^(-1)and spraying power P 1=31.09 kW,the minimum porosity that can be obtained 2.5%.

关 键 词：等离子喷涂 镍基涂层 孔隙率 响应曲面法 

分 类 号：TG17[金属学及工艺—金属表面处理]