非晶态Fe-Ni-Cr合金的电沉积优化新工艺

A novel optimization process for the preparation of amorphous Fe-Ni-Cr alloy

采用正交试验法对镜面非晶态Fe Ni Cr合金的电沉积新工艺进行了研究 ,采用X ray衍射和扫描电子显微镜对镀液组分和工艺参数对镀层的影响分别进行了分析及优化 .实验结果表明 ,采用这种优化的新工艺于室温下制备的Fe Ni Cr合金镀层的X ray衍射图仅存在衍射角 2θ在 41°～ 47°之间出现表征非晶态结构的漫射峰 ,扫描电镜 (SEM )图显示镀层表面仅有细小的裂纹而无针孔生成 .该合金镀层中Fe、Ni、Cr含量分别为 5 4.4%、33.9%、11.7% ,镀层外观呈光亮的镜面 ,厚度可达 8.7μm、硬度达 5 30左右 .电镀液性能优良、物理性能稳定且利于环保 .图 2 ,表 5 ,参 2

A electrochemical process has been proposed for the preparation of a mirror bright amorphous Fe-Ni-Cr alloy. The method of the electrodeposition of amorphous Fe-Ni-Cr alloys has been optimized through adopting orthogonal experiment. The effects of electrolyte composition and operation parameters on the properties of the amorphous Fe-Ni-Cr alloy deposits are discussed respectively. X-ray diffraction (XRD) and Scanning Electron Microscope (SEM) are used to characterize the properties of the deposits. Experiments show that the X-ray diffraction exhibits only broad humps at 2θ=41～47°for amorphous Fe-Ni-Cr alloy deposits and SEM shows that the deposit contains only a few fine cracks but no pinholes. The microhardness of deposits is up to 530HV, up to 8.7 μm thick amorphous Fe-Ni-Cr alloy deposits with a mirror like appearance, which contains 54.4%Fe?33.9%Ni?11.7%Cr, is obtained at room temperature. The plating bath are environmentally harmlessand steady.2figs.,5tabs.,22refs.