电沉积纳米晶Ni-Co-Fe-P合金镀层的组织结构与摩擦磨损性能  

Microstructure and Tribological Properties of Electrodeposition Nanocrystalline Ni-Co-Fe-P Alloy Coating

作　　者：林兰芳[1] 林绿波[2] 戴品强[2,3] 

机构地区：[1]集美大学轮机工程学院,福建厦门361021 [2]福州大学材料科学与工程学院,福建福州350108 [3]福建工程学院材料科学与工程系,福建福州350108

出　　处：《摩擦学学报》2011年第4期340-345,共6页Tribology

基　　金：福建省自然科学基金(E0810006)资助~~

摘　　要：用脉冲电沉积方法制备了纳米晶N i-Co-Fe-P合金镀层.采用X射线衍射(XRD),透射电镜(TEM),扫描电镜(SEM),能谱分析(EDS)等方法研究了合金镀层的微观组织结构和成份.采用显微硬度计和摩擦磨损试验机测试合金镀层的显微硬度和摩擦磨损性能.结果表明:纳米晶N i-40.41%Co-6.16%Fe-1.63%P合金镀层的晶粒尺寸为8.3 nm,显微硬度和耐磨性明显高于不含P的N i-Co-Fe镀层;适当温度退火可以提高镀层的硬度及耐磨性;镀层的耐磨性与其硬度成正相关,且随着硬度的提高,镀层的磨损机理由磨粒磨损和黏着磨损共同作用转变为磨粒磨损主导.Nanocrystalline（nc） Ni-Co-Fe-P alloy coatings were synthesized by pulsed electrodeposition.The structure,surface morphology and composition of nc Ni-Co-Fe-P alloy coating were studied by XRD,TEM,SEM and EDS.The effects of alloying with phosphorus and subsequent heat treatment on the wear resistance of nc Ni-Co-Fe-P alloy were studied using a friction-wear tester.The results indicate that the grain size of nc Ni-40.41%Co-6.16%Fe-1.63%P alloy coating was only 8.3 nm,and the hardness and wear resistance of nc Ni-Co-Fe-P alloy were higher than that of nc Ni-Co-Fe alloy coating.The hardness and wear resistance of nc Ni-Co-Fe-P alloy were improved by heat treatment.There was a positive relationship between the wear resistance and hardness,and the wear mechanism changed gradually from abrasive and adhesion wear to abrasive wear with increasing hardness of nc Ni-Co-Fe-P alloy.

关 键 词：脉冲电沉积 纳米晶 Ni-Co-Fe-P 摩擦磨损性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]