新型航空发动机用Ni-cBN主动切削涂层切削性能研究  

Cutting Performance of Aeroengine Ni-cBN Cutting Coating

作　　者：王宇 崔岳峰 郭睿 刘建明 黄凌峰 王帅 Wang Yu;Cui Yuefeng;Guo Rui;Liu Jianming;Huang Lingfeng;Wang Shuai(AECC Shenyang Engine Research Institute,Shenyang 110015,China;BGRIMM Advanced Materials Science&Technology Co.,Ltd,Beijing 102206,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]中国航发沈阳发动机研究所,沈阳110015 [2]北矿新材科技有限公司,北京102206 [3]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 [4]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3期68-76,共9页Thermal Spray Technology

摘　　要：篦齿封严是航空发动机中的一种封严结构,为避免篦齿在服役过程中发生磨损,需在其表面制备防护涂层。国内多采用等离子喷涂氧化铝类耐磨涂层,但在苛刻工况下易剥落,防护性能欠佳。国际上近年出现一种采用复合电沉积工艺制备的新型主动切削涂层,性能更优。镍-立方氮化硼(Ni-cBN)是新型主动切削涂层中典型的一种。在FGH95基材试片和仿形模拟件上采用复合电沉积工艺制备了新型Ni-cBN主动切削涂层,研究了其在高温高速条件下与GH3536金属蜂窝的切削性能。结果表明,新型Ni-cBN涂层可在金属蜂窝上切割出形状规整的沟槽,对磨温升降低约80℃,无过热灼烧迹象,热稳定处理后涂层仍保持切削能力,表现出优异的切削性能。Labyrinth is a kind of sealing structure in aero-engine.In order to achieve better wearing resistance,preparing the protective coating on tip surface is needed.In China,plasma-sprayed alumina-based wear-resistant coatings are commonly used,but they tend to delaminate and provide inadequate protection under harsh conditions.In recent years,a new type of cutting coating prepared by composite electrodeposition process emerges internationally,with superior performance.Nickel-cubic boron nitride(Ni-cBN)is a typical coating of this new coating technology.In this study,Ni-cBN cutting coating was prepared using a composite electrodeposition process on FGH95 substrate samples and shape simulation parts.The cutting performance of the coating after cutting GH3536 metal honeycomb under high-temperature and high-speed conditions were investigated.The results show that Ni-cBN cutting coating can cut well-defined grooves on the metal honeycomb,reduce the temperature rise during cutting by about 80℃,keep cutting performance after heat treatment,and exhibit excellent active cutting performance without signs of overheating or burn marks.

关 键 词：复合电沉积 Ni-cBN涂层 篦齿封严 切削性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]