电参数和反应时间对微弧氧化热障陶瓷层制备的影响  

Effects of electrical parameters and reaction time on preparation of thermal barrier ceramic coating by micro arc oxidation

作　　者：孙长飞[1] 李更天 马春生[3] SUN Chang-fei;LI Geng-tian;MA Chun-sheng(Department of Marine Electrical and Intelligent Engineering,Jiangsu Maritime Vocational and Technical College,Nanjing 211170,China;Dalian Jiehua Marine Technology Co.,LTD.,Dalian 116113,China;Marine Engineering College,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]江苏海事职业技术学院轮机电气与智能工程学院,南京211170 [2]大连捷华船舶科技有限公司,辽宁大连116113 [3]大连海事大学轮机工程学院,辽宁大连116026

出　　处：《大连海事大学学报》2021年第1期119-125,共7页Journal of Dalian Maritime University

基　　金：交通运输部应用基础研究项目(2015-329-225-230)。

摘　　要：为解决传统活塞顶部防护技术存在的操作复杂、成本较高和可维修性较差的问题,探索利用微弧氧化技术在铸造铝合金(ZL109)试样表面制备热障陶瓷层,以抵抗活塞顶部受到的热冲击和高温腐蚀.在前期研究工作基础上,重点研究电源频率、占空比和反应时间对热障陶瓷层制备的影响.实验表明:在电源频率为400 Hz、占空比为40%、反应时间为20 min条件下,所制备得到的陶瓷层表面较平整,孔隙缺陷少,膜层致密性较好.研究结果表明,微弧氧化技术在活塞顶部表面防护领域具有较好的应用前景.In order to solve the problems of complex operation,high cost and poor maintainability of traditional piston top protection technology,the thermal barrier ceramic coating was prepared on the surface of cast aluminum alloy(ZL109)by micro arc oxidation technology to resist the thermal shock and high temperature corrosion of piston top.Based on the previous work,the effects of power frequency,duty cycle and reaction time on the preparation of thermal barrier ceramic coating were studied.Experiments show that the surface of the ceramic coating is smoother,the pore defects are rare,and the film is dense under the conditions of 400 Hz power frequency,40%duty cycle and 20 min reaction time.The results show that micro arc oxidation technology has a good application prospect in the field of piston top surface protection.

关 键 词：活塞 微弧氧化 热障陶瓷层 铸造铝合金 

分 类 号：TG174.453[金属学及工艺—金属表面处理]