氯化钠-乙二醇系锻造GH3536高温镍基合金电化学抛光机理研究  

Researh on Electrochemical Polishing Mechanism of Forged GH3536 Ni-based Superalloys in Sodium Chloride-ethylene Glycol Solution

作　　者：张士达 孙嘉骏 张建华[3] 孙颖丽 尹瀛月 ZHANG Shida;SUN Jiajun;ZHANG Jianhua;SUN Yingli;YIN Yingyue(Shandong Machinery Design and Research Institute,Ji'nan 250031,China;Department of Mechanical Engineering,Qilu University of Technology(Shandong Academy of Sciences),Ji'nan 250353,China;Key Laboratory of High Efficiency and Clean Mechanical Manufacture for Ministry of Education,School of Mechanical Engineering,Shandong University,Ji'nan 250061,China)

机构地区：[1]山东省机械设计研究院,山东济南250031 [2]齐鲁工业大学(山东省科学院)机械工程学院,山东济南250353 [3]山东大学机械工程学院高效洁净机械制造教育部重点实验室,山东济南250061

出　　处：《电加工与模具》2025年第S1期34-39,45,共7页Electromachining & Mould

基　　金：山东省青年自然科学基金项目(ZR2024QE447)。

摘　　要：针对电化学抛光中电解液的环境风险问题,通过采用动电位极化、交流阻抗、恒电位极化、X射线光电子能谱仪及扫描电子显微镜等测试方法,研究环保型氯化钠和乙二醇深共溶溶剂(DES)中锻造GH3536合金的电化学抛光机理及处理后合金的表面质量与机械性能。结果表明,经过15 min的电化学抛光后,表面粗糙度由初始值Ra1.4μm降至Ra0.2μm,表面硬度从(228.0±7.3)HV降低到(194.0±2.5)HV。通过建立DES体系中锻造GH3536合金的电化学抛光定性模型,为高效精密加工镍基高温合金等航空航天领域关键部件的工艺优化提供新的见解。In response to the environmental risks of electrolyte in electrochemical polishing,potentiodynamic polarization,AC impedance,potentiostatic polarization,X-ray photoelectron spectroscopy and scanning electron microscopy were used to investigate the electrochemical polishing mechanism of forged GH3536 in an environmentally friendly sodium chloride and ethylene glycol deep solution(DES)as well as the surface quality and mechanical properties as-following.The result indicated that the surface roughness decreased from its primary value of Ra1.4μm to Ra0.2μm after electrochemical polishing for 15 min,and the surface hardness decreased from(228.0±7.3)HV to(194.0±2.5)HV.A qualitative electrochemical polishing model for forged GH3536 alloy in the DES system was established to offer new insights of critical components in aerospace fields,such as Ni-based superalloys,for processing optimization of precise and effective machining.

关 键 词：镍基高温合金 电化学抛光 钝化膜 表面质量 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]