磁场下化学镀Co-Ni-B-Ce合金层微观形貌和耐磨性  

Micromorphology and Wear Resistance of Chemical Plating Co-Ni-B-Ce Alloy under Magnetic Field

作　　者：宣天鹏[1] 章磊[1] 黄芹华[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,合肥230009

出　　处：《应用化学》2005年第3期268-271,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目(50371023)

摘　　要：　研究了磁场条件下化学镀Co- Ni- B -Ce合金镀层的微观表面形貌、显微硬度和磨损体积。结果表明,化学镀Co- Ni -B合金镀层表面由“圆锥峰”构成,表面较为平整,添加稀土Ce后,镀层变得凹凸不平;在外加磁场下施镀,镀层表面起伏更大。镀液里添加Ce以及在磁场条件下,明显地提高了Co -Ni -B合金镀层的显微硬度和耐磨性,随镀液中Ce添加量增加,合金镀层的硬度和耐磨性都是先增加后降低,当镀液里Ce的添加量为0. 8g/L时,硬度和耐磨性均达到了峰值。The surface micromorphologies, microhardnesses and wear volumes of chemical plat ing Co-Ni-B-Ce alloy obtained under a magnetic field were studied. The result s show that the surface of Co-Ni-B coating was composed of “taper humps”, th e surface felt smooth, and became irregular when the plating was carried out in the plating bath containing the cerium compound. The surface “taper humps” of the Co-Ni-B-Ce alloy coatings were much more irregular when the plati ng was carried out under magnetic field. The microhardness and wear resistance o f Co-Ni-B alloy coatings are remarkably increased when cerium chloride add ed in the plating bath and the plating process is performed under a magnetic fie ld. With increasing of cerium amount in the plating bath, both the micro hardness and wear resistance of the alloy coatings increase first and decrea se afterwards, and both reach to their peak values at c(Ce)=0.8 g/L in the plating bath.

关 键 词：化学镀钴-镍-硼合金 铈 表面形貌 磁场 

分 类 号：O646[理学—物理化学] TQ153.2[理学—化学]