镍-氧化镧纳米颗粒复合电铸的研究  

Composite Electroforming Process of the Codeposition of La_2O_3 Nanoparticles with Nickel

作　　者：薛玉君[1] 朱荻[1] 赵飞[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《机械科学与技术》2004年第12期1410-1413,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目 (5 0 0 75 0 40 );中国博士后科学基金项目 (2 0 0 2 0 3 2 192 )资助

摘　　要：采用复合电铸工艺制取了含La2 O3 纳米颗粒的镍基复合电铸层 ,研究了La2 O3 纳米颗粒共沉积量对复合电铸层微观组织及显微硬度的影响。结果表明 ,随着La2 O3 纳米颗粒共沉积量的增大 ,复合电铸层表面更加平整、组织也更加细致均匀 ,基质金属镍的晶粒得到进一步细化 ,因而复合电铸层的显微硬度也随之升高。Ni-matrix composite electroforming deposits containing La 2 O 3 nanoparticles were prepared by using the composite electroforming process. The effects of the content of the codeposited-La 2 O 3 nanoparticles on the microstructure and the microhardness of the electroforming deposit were studied. The results reveal that the composite electroforming deposit shows a smoother surface with a more compact and uniform microstructure as the codeposition content of the La 2 O 3 nanoparticles is increased. The crystalline grain of the Ni-matrix is further refined. As a result, the microhardness of the composite electroforming deposit is enhanced.

关 键 词：复合电铸 LA2O3 纳米颗粒 电铸层 

分 类 号：TG153.43[金属学及工艺—热处理]