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Thermal stability of electrodeposited nanocrystalline nickel assisted by flexible friction
柔性摩擦辅助电沉积纳米晶镍的热稳定性

查看参考文献28篇

Lu Biao 1   Hu Zhenfeng 2 *   Wang Xiaohe 3   Xu Binshi 3  
文摘 Nanocrystalline nickel coating was prepared by flexible friction assisted electrodeposition technology in an additive-free Watts bath. The coating consists of massive equiaxial crystals with an average grain size of about 24 nm and exhibits a (111) preferred orientation. The differential scanning calorimetry (DSC) analysis of nanocrystalline nickel demonstrates that the peak temperature of rapid grain growth is about 285.4 °C, and the peak temperature of grain growth towards equilibrium is around 431.5 °C. The isochronous annealing results reveal that abnormal grain growth behavior is not observed in nanocrystalline nickel without sulfur-containing. The thermal stability of the deposition was improved due to its initial microstructure of the as-deposited nickel and a certain amount of annealing nano-twins with low-energy, which reduces the driving force for grain growth. Consequently, the coating shows a low residual tensile stress of about 50 MPa and a high microhardness of HV 400 at the annealing temperature of 450 °C.
其他语种文摘 采用柔性摩擦辅助电沉积技术在无添加剂的Watts液中制备(111)择优取向且平均晶粒尺寸约为24 nm的等轴纳米晶镍镀层。差示扫描热分析结果表明：该纳米晶镍镀层的快速晶粒生长峰值温度约为285.4 °C，晶粒生长趋于平衡峰值温度约为431.5 °C。等时退火结果表明：该纳米晶镍镀层因无硫而未观察到异常晶粒生长行为；同时由于其初始镀态的低能界面结构和一定量退火纳米孪晶的形成，降低了纳米晶粒生长的驱动力，导致其热稳定性得到改善，使得该镀层在450 °C退火后，表现出很小的残余拉应力(约50 MPa)和较高的硬度(约HV 400)。
来源 Transactions of Nonferrous Metals Society of China ,2015,25(10):3297-3304 【核心库】
DOI 10.1016/S1003-6326(15)63967-X
关键词 electrodeposition ; nanocrystalline nickel ; flexible friction ; thermal stability ; grain growth
地址

1. School of Materials and Metallurgy, Northeastern University, National Key Laboratory for Remanufacturing, Shenyang, 110819  

2. Academy of Armored Forces Engineering, National Engineering Research Center for Mechanical Products Remanufacturing, Beijing, 100072  

3. Academy of Armored Forces Engineering, National Key Laboratory for Remanufacturing, Beijing, 100072

语种 英文
文献类型 研究性论文
ISSN 1003-6326
学科 化学;一般工业技术
基金 国家自然科学基金 ;  supported by the Basic Research Development Program of China
文献收藏号 CSCD:5569248

参考文献 共 28 共2页

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