镍基金属玻璃电化学特性与线切割实验研究  

Study on Electrochemical Characteristics and Wire Electrochemical Micromachining of Ni-based Metallic Glass

作　　者：孟岭超[1] 曾永彬[1,2] 房晓龙 朱荻[1,2] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]江苏省精密与微细制造技术重点实验室,江苏南京210016

出　　处：《电加工与模具》2017年第6期23-26,31,共5页Electromachining & Mould

基　　金：国家自然科学基金资助项目(51775276);江苏省普通高校研究生科研创新计划项目(KYLX15_0292);中央高校基本科研业务费专项资金资助项目

摘　　要：金属玻璃具有独特的原子结构和优异的材料性能,在产品微小型化、精密化方面已展现出重要而广阔的应用前景。但金属玻璃对微加工过程中温度敏感,且现有的金属玻璃微加工技术还不成熟,在一定程度上阻碍其广泛应用。提出了金属玻璃微细电解线切割加工方法,基于电化学阳极溶解原理对材料进行加工,加工温度低、无加工应力、材料不会晶化,是制造金属玻璃微结构零件理想的技术手段。研究了镍基金属玻璃Ni_(72)Cr_(19)Si_7B_2在不同溶液中的电化学特性,并优化微细电解线切割实验参数,加工出高质量的金属玻璃微结构。Metallic glass has shown a great and wide potential in the miniaturization and precise treatment of various products due to its unique atomic structure and outstanding material properties. However,the metallic glass is sensitive to temperature during the process of micro-shaping,and the existing micro-shaping technologies are not yet mature,which will hinder its wide application to a certain extent. In this paper, the technique of wire electrochemical micromachining is proposed for the micro-shaping of Ni-based metallic glass. It is an electrochemical dissolution process that can remove electrically conductive material at an atomic scale. Crystallization and induction of heat or stress into the workpiece are non-existent,which is a promising technique for micro-shaping of metallic glass structures. Taking the example of a Ni-based glassy alloy, Ni72Cr19Si7B2, the polarization and fabrication characteristics in different electrolytes were studied. The complex microstructure with high quality was fabricated under the optimized parameters.

关 键 词：金属玻璃 电化学特性 微细电解线切割 微结构 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]