前处理及热处理对钛合金化学镀镍层性能影响的研究  

Study on the Effect of Pretreatment and Heat Treatment on the Propertiesof Electroless Nickel Plating on Titanium Alloy

作　　者：胡波 HU Bo(Qing′an Group Co.,Ltd.,Xi′an 710077,Shaanxi,China)

机构地区：[1]航空工业庆安集团有限公司,陕西西安710077

出　　处：《工程与试验》2024年第2期43-46,共4页Engineering and Test

摘　　要：为满足新一代战机对减重的要求,钛合金作动筒正逐步替代传统的钢制作动筒。为提升钛合金表面硬度,增强其耐磨性能,开展了钛合金化学镀镍工艺研究,探索不同前处理及热处理方式对镀层性能指标的影响。采用硬度测试仪、扫描电镜、能谱测试仪等对镀镍后TC6钛合金的硬度、厚度、表面形貌、结合力、膜层成分及含氢量进行了检测分析。结果表明,前处理采用低压吹细砂+氢氟酸腐蚀活化,得到结合力良好的Ni-P合金镀层,镀层硬度在各个温度区间内分布均匀且随着温度升高而提升,真空炉399℃热处理,硬度可达900HV,含氢量为104.28ppm,满足产品使用需求。In order to meet the weight reduction requirement of the new generation fighters,titanium alloy actuator is gradually replacing the traditional steel actuator.In order to improve the surface hardness and wear resistance of titanium alloy,the electroless nickel plating process of titanium alloy is studied,and the effects of different pretreatment and heat treatment methods on the coating performance are explored.The hardness,thickness,surface morphology,adhesion,film composition and hydrogen content of TC6 titanium alloy after nickel plating are tested and analyzed by using hardness tester,scanning electron microscope and energy spectrum tester.The results show that the Ni-P alloy coating with good adhesion is obtained by pretreatment with low-pressure blowing fine sand and hydrofluoric acid activation.The hardness of the coating is evenly distributed in each temperature range and increases with the increase of temperature.After heat treatment at 399℃in vacuum furnace,the hardness can reach 900HV,and the hydrogen content is 104.28ppm,which meets the requirements of product usage.

关 键 词：TC6钛合金 前处理 化学镀镍 真空热处理 

分 类 号：TQ153.2[化学工程—电化学工业]