钛合金叶尖耐磨涂层制备与组织性能研究  

Preparation and Microstructure Properties of Wear-resistant Coating on Titanium Alloy Blade Tip

作　　者：黄凌峰 刘建明 卢晓亮 王帅 郭睿 Huang Lingfeng;Liu Jianming;Lu Xiaoliang;Wang Shuai;Guo Rui(BGRIMM Technology Group,Beijing 100160,China;Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts,Beijing 102206,China;Beijing Key Laboratory of Special Coating Material and Technology,Beijing 102206,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]北京市工业部件表面强化与修复工程技术研究中心,北京102206 [3]特种涂层材料与技术北京市重点实验室,北京102206

出　　处：《热喷涂技术》2023年第2期54-61,共8页Thermal Spray Technology

基　　金：矿冶科技集团有限公司科研基金(02-2216);矿冶科技集团专项科研基金(JTZX22-492)。

摘　　要：为解决钛合金表面直接进行电镀涂层制备结合力较低的问题,本文采用超音速火焰喷涂技术在钛合金叶尖表面制备了不同厚度NiCoCrAlY底层,并在底层表面用复合电镀技术制备了Ni-cBN耐磨面层。研究表明NiCoCrAlY-Ni-cBN耐磨涂层的组织结构良好,结合强度大于74.2 MPa,能够在600℃大气环境中长时间保持组织和结构稳定。NiCoCrAlY-Ni-cBN钛合金叶尖涂层与NiCrFe/Al/hBN封严涂层的对磨匹配效果良好,可以为钛合金叶尖提供良好的对磨防护。In order to solve the problem of low bonding strength of direct electroplating on the surface of titanium alloy,the supersonic flame spraying technology was used to prepare NiCoCrAlY layer with different thickness on the surface of titanium alloy blade tip,and the Ni-cBN wear-resistant layer was prepared by composite plating technology on the bottom surface.The results show that the NiCoCrAlY-Ni-cBN wear-resistant coating has good microstructure,and the binding strength is greater than 74.2 MPa,and can keep the microstructure and structure stable in the atmosphere environment of 600℃for a long time.The NiCoCrAlY-Ni-cBN titanium alloy tip coating shows good grinding matching effect with NiCrFe/Al/hBN sealing coating,which can provide good wear protection for titanium alloy tip.

关 键 词：钛合金 叶尖耐磨 超音速火焰喷涂 复合电镀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]