纳米Al_2O_(3p)/Ni复合刷镀层的组织与性能研究  

Research on Microstructure and Properties of Nanoparticle Al_2O_(3p)/Ni Compound Coating by Electro-brush-plating

作　　者：刘稳善[1] 惠记庄[1] 张天明[1] 解培民[1] 

机构地区：[1]长安大学工程机械学院,陕西西安710064

出　　处：《热加工工艺》2004年第8期20-21,共2页Hot Working Technology

摘　　要：制备了纳米A2O3p/Ni的复合刷镀层,测试了复合刷镀层的硬度、耐磨性、抗接触疲劳性能及高温性能,并分析了复合刷镀层的金相组织。结果表明:纳米颗粒复合刷镀层的硬度是不含纳米颗粒的快速镍刷镀层的1.7倍,耐磨性是其2.5倍,抗疲劳寿命提高到106周次,可服役温度提高到450℃;纳米颗粒复合刷镀层的强化机制主要为细晶强化,弥散强化和位错强化。We tested the hardness, wearing capacity,anti-contact fatigue and high temperature behaviour of the Al_2O_3_p/Ni multiple brush plating layer which has been prepared, and studied its metallographic structure.The results show that the hardness of the Al_2O_3_p/Ni multiple brush plating layer is 1.7 times of no Al_2O_3_p/Ni brush plating, wearing capacity is 2.5 times,the endurance failure gets to 10~6 cycles,the usable temperature is 450℃. The strengthen mechanism of Al_2O_3_p/Ni multiple brush plating layer is mainly crystal strengthen,dispersion strengthen and line defect streng then.

关 键 词：纳米颗粒 刷镀层 金相组织 力学性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]