激光退火对化学镀Ni-W-P/Ni-P梯度镀层组织及硬度的影响  

Effects of Laser Annealing on Microstructure and Hardness of Electroless Ni-W-P / Ni-P Gradient Coating

作　　者：姚洪利 李莎[2] 刘宏[3] YAO Hong-li;LI Sha;LIU Hong(Department of Mechanical and Electrical Engineering,Taishan Polytechnic,Taian 271000,China;School of Material Engineering,Shanxi Polytechnic Institute,Xianyang 712000,China;School of Mechanical Engineering,Qilu University of Technology ( Shandong Academy of Sciences),Jinan 250353,China)

机构地区：[1]泰山职业技术学院机电技术工程系,泰安271000 [2]陕西工业职业技术学院材料工程学院,咸阳712000 [3]齐鲁工业大学(山东省科学院)机械与汽车工程学院,济南250353

出　　处：《齐鲁工业大学学报》2019年第4期9-14,共6页Journal of Qilu University of Technology

基　　金：山东省自然科学基金(ZR2011EMM014).

摘　　要：通过成分分析、形貌观察、小角XRD衍射定量分析、显微硬度测试、深度敏感压痕技术(DSI)测试等方法,研究了激光退火对化学镀Ni-W-P/Ni-P梯度镀层组织及硬度的影响。结果表明:激光扫描速度由12 mm/s降低到8 mm/s,外层结晶度由70. 3%提高到85. 3%,内层结晶度由50. 3%提高到69. 5%。内层Ni3P的质量分数始终高于相应外层。激光退火镀层硬度显著提高,扫描速度越低,镀层硬度越高,最高硬度出现在扫描速度为8 mm/s的外层,达到898 HV0. 1。激光扫描速度为10 mm/s时,内层硬度(779 HV0. 1)略高于外层硬度(782 HV0. 1)。The effect of laser annealing on microstructure and hardness of electroless Ni-W-P / Ni-P gradient coating was studied by the following methods: composition analysis, morphology observation, small angle XRD diffraction quantitative analysis,microhardness test,and depth sensitive indentation technique ( DSI). The results showed that the laser scanning speed was reduced from 12 mm/ s to 8 mm/ s,the crystallinity of the outer layer increased from 70. 3% to 85. 3%,and the crystallinity of the inner layer increased from 50. 3% to 69. 5%. The mass fraction of Ni3P in the inner layer is always higher than that in the corresponding outer layer. The hardness of the coating increased significantly. The lower the scanning speed,the higher the hardness of the coating. The highest hardness appeared in the outer layer with scanning speed of 8mm/ s, and reaches 898 HV0. 1. When the laser scanning speed is 10 mm/ s,the inner hardness (779 HV0. 1 ) is slightly higher than that of the outer layer (782 HV0. 1).

关 键 词：化学沉积 Ni-W-P/Ni-P梯度镀层 激光退火 硬度 

分 类 号：TG156.99[金属学及工艺—热处理]