镍钛合金电解抛光加工电场仿真研究  

Optimization and Simulation of Electro Polishing Process Parameters of Nitinol Alloy

作　　者：李明 林华[2] LI Ming;LIN Hua(West Anhui University, Lu′an 237012, China)

机构地区：[1]皖西学院实验实训教学管理部,安徽六安237012 [2]皖西学院机械与汽车工程学院,安徽六安237012

出　　处：《洛阳理工学院学报（自然科学版）》2020年第1期63-66,共4页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

基　　金：皖西学院校级科研项目(WXZR201916)。

摘　　要：镍钛形状记忆合金在生物医学领域被广泛用作植入物,具有重要的应用前景。同时,这种合金材料的粗糙度、光泽度以及耐腐蚀性能的要求也很高。电解抛光技术作为精密表面加工技术,具有效率高、处理试样表面光滑、能够保持材料原有性能等特点,在表面处理领域得以迅速发展。本文针对镍钛合金板材,建立了电解抛光加工电场仿真模型;采用有限元法及有限元软件求解电解液区域电场分布、阳极电流密度模分布和阳极材料去除量,以分析电解抛光材料去除原理与去除规律。仿真结果显示:阳极表面电流密度模大小,随电场场强的增加,呈线性关系,阳极材料法向去除长度与电流密度模呈线性关系。Ni-Ti shape memory alloy has been widely used as implants in the field of biomedicine,which has an important medical application prospect.At the same time,the roughness,gloss and corrosion resistance of this alloy material are also very high requirements.As a precision surface processing technology,electropolishing technology has been developed rapidly in the field of surface treatment due to its high efficiency,smooth surface of sample and ability to maintain the original properties of materials.In this paper,the electric field simulation model of electropolishing is established for nitinol alloy plate.The electric field distribution,anode current density mode distribution and anode material removal amount in electrolyte area are solved by finite element method and finite element software.The simulation results show that the current density mode of anode surface has a linear relationship with the increase of electric field intensity,and the normal removal length of anode material has a linear relationship with the current density mode.

关 键 词：电解抛光 镍钛合金 COMSOL 电场仿真 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]