摘要
本文以铜铝合金粉和聚苯酯为原材料,添加粘结剂,采用机械团聚复合工艺制备铜铝聚苯酯复合粉末;采用大气等离子喷涂工艺制备的铜铝聚苯酯封严涂层组织均匀,聚苯酯和孔隙占比45.3%,涂层硬度为56.3 HR15Y、结合强度≥6.9MPa、650℃下抗热震性能良好,涂层在96小时室温中性盐雾试验外观评级达到4级,可满足航空发动机对气路间隙控制封严涂层的要求。
In this paper,Cu-Al alloy powders and polyester were used as raw materials,and then the binder was added.Mechanical aggregate composite process has been adopted to prepare the aluminum bronze polyester(CuAl-PHB)composite powder.The CuAl-PHB coatings prepared by atmospheric plasma spraying(APS)were uniform.The ratio of polyester and porosity was 45.3%.The coating hardness was 56.3 HR15Y;the bonding strength was 6.9 MPa,which exhibited excellent thermal shock resistance at 650℃.The appearance of the coating reached grade 4 in 96 h room temperature neutral salt spray test.The coatings can meet the requirements of aero-engine seal coating for air-path clearance control.
作者
刘通
刘建明
郭丹
黄凌峰
章德铭
Tong Liu;Jianming Liu;Dan Guo;Lingfeng Huang;Deming Zhang(BGRIMM Technology Group,Beijing 100044,China;Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts,Beijing 102206,China;Key Laboratory of Beijing for Special Coating Material and Technology,Beijing 102206)
出处
《热喷涂技术》
2020年第1期57-61,33,共6页
Thermal Spray Technology
基金
北京矿冶科技集团有限公司集团科研基金(02-1931)。
关键词
铜铝聚苯酯
封严涂层
等离子喷涂
力学性能
耐腐蚀性
CuAl-PHB
Abradable sealing coating
APS
Mechanical property
Corrosion resistance
