脉冲电铸非晶态镍磷合金试验研究  

The Experimental Research on Pulse Electroforming of Amorphous Ni-P Alloy Coatings

作　　者：李雪城 朱增伟[1] 沈春健[1] LI Xuecheng;ZHU Zengwei;SHEN Chunjian(College of Mechanical and Electrical Engineering,Nanjing University ofAeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《电加工与模具》2018年第5期38-42,共5页Electromachining & Mould

基　　金：国家自然科学基金资助项目(51475239)

摘　　要：为了满足电铸厚层非晶态镍磷合金的需求,通过在氨基磺酸镍-亚磷酸体系电铸液中使用脉冲电流获得了非晶态镍磷合金铸层,研究了脉冲参数对非晶态镍磷合金铸层的影响;通过改变平均电流密度、占空比和脉冲频率,研究其对铸层组成及硬度性能的影响。结果表明:随着平均电流密度的增大,铸层中的磷含量呈下降趋势;随着占空比的增大,铸层中的磷含量略呈下降趋势,随着脉冲频率的增大,铸层中的磷含量呈上升趋势。磷含量是镀层结构的决定因素,电铸试验条件对铸层结构的影响是通过对铸层中磷含量的影响而发挥作用;铸层的非晶化程度随着磷含量的升高而提高,铸层硬度随着磷含量的升高而降低。Amorphous Ni-P alloy coatings were prepared from a bath containing Ni （NH2SO3）2 andH3PO3 by pulse DC power so as to find the influence on coatings of pulse parameters. And the impacton component,microstructure and surface morphology of coatings by changing current density,dutycycle and pulse frequency was studied. The results show that the content of P declines with theincrease of current density and slightly decreases with the duty cycle,and it rises as pulse frequencyincreases. The effects of changing electroforming conditions on coating structure is determined by thecontent of P. The change trend of the degree of amorphization of coatings is same as that of the contentof P. The HV hardness of coatings decreases with the enlargement of the content of P.

关 键 词：非晶态镍磷合金 脉冲电铸 合金电铸 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]