电沉积制备铁-镍-铬纳米晶合金箔工艺的正交设计  

Orthogonal design of technology for electrodepositionnanocrystalline Fe-Ni-Cr alloy foil

作　　者：邓姝皓[1] 龚竹青[2] 易丹青[1] 蔡桂华[2] 苏玉长[1] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083 [2]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2005年第6期938-943,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(59674025)

摘　　要：运用正交设计研究影响电沉积铁-镍-铬合金箔质量的主要工艺因素,分析电流密度、溶液温度和溶液的pH值等各因素对合金成分和电流效率的影响,通过综合评分的方法确定最佳工艺条件,并对最佳工艺条件下获得的合金箔材的微观形貌、结构、物理和化学性能进行研究。研究结果表明制备的合金箔材成分为60%～65%Fe,34%～36%Ni,1%～2%Cr,厚度均匀,表面光滑,结晶细致。扫描电镜观察和X衍射结果表明其晶粒尺寸在纳米范围内,合金箔的抗拉强度和延展率分别为658MPa和6%以上,电阻率超过90μΩ.cm,磁感应强度为1.25T,最大导磁率为1.096×10-2H.m-1,矫顽力为357.53A.m-1;箔材具有优异的耐腐蚀性能。The technology of the electrodeposition nanocrystalline Fe-Ni-Cr alloy foil from sulfatechrolide solution was studied by orthogonal design. The effects of operating parameters such as current density, temperature and pH of solution, on Fe-Ni-Cr alloy foil were discussed by synthetical graded approach. The best process for Fe-Ni-Cr alloy foil was obtained through synthetic analysis. The results from scanning electron micrograph （SEM） and X-ray diffraction （XRD） show that Fe-Ni-Cr alloy foil possesses a smooth and clean appearance, uniform thickness and stable composition of 60 %- 65% Fe, 34% - 36% Ni and 11% - 2% Cr, and the grain size of alloy is less than 100 nm, which indicates it is nanocrystalline. The nanocrystalline alloy foil also exhibits better mechanical, electromagnetic performance and better corrosion resistance.

关 键 词：电沉积 纳米晶 铁-镍-铬合金箔 正交设计 

分 类 号：TG174.441[金属学及工艺—金属表面处理]