钨的电场与流场协同精整技术研究-中国材料进展

文章信息/Info

Title:: Research on Synergistic Finishing Technology of Electric Field and Flow Field of Tungsten

作者:: 张晓静; 陈小龙; 李永华; 常辉; 王红伟; 1. 南京尚吉增材制造研究院有限公司，江苏南京 210046 2. 南京工业大学材料科学与工程学院，江苏南京 211816

Author(s):: ZHANG Xiaojing; CHEN Xiaolong; LI Yonghua; CHANG Hui; WANG Hongwei; 1. SHANGI Insititute for Advanced Materials（Nan Jing）Co.,Ltd，Nanjing 210046，China 2. School of Materials Science and Engineering，Nanjing University of Technology，Nanjing 211816，China

Keywords:: tungsten; EFSF technology; surface morphology; surface roughness; sample thickness; surface glossness; surface hardness

摘要:: 使用电场与流场协同精整（EFSF）技术对钨试样进行表面抛光。采用金相显微镜、表面粗糙度仪、千分尺、光泽度仪、显微硬度计分别表征了样品表面形貌、表面粗糙度、试样厚度、表面光泽度及表面硬度。结果表明：EFSF技术能够显著改善钨的表面品质，使其表面粗糙度Ra可以达到0.154 μm，光泽度达到223.1 GU，获得较好的镜面加工效果。但是EFSF技术存在表面品质改善阈值，当粗糙度降低到一定程度（如Ra<0.3 μm）时，“粗糙度改善/材料损耗”性价比偏低。同时，EFSF技术可以获得低应力且表面硬度稳定的高品质加工表面，当加工时间>10 min后，表面硬度基本稳定在228.4 MPa。EFSF技术可以实现对钨的高镜面、低损伤、低应力表面抛光，为钨的高品质、绿色表面精整处理提供了一种新选择。

Abstract:: Synergistic finishing technology of electric field and flow field (EFSF) was used to polish tungsten sample. Surface morphology, surface roughness, sample thickness, surface glossness and surface hardness were analyzed by metallographic microscope, surface roughness meter, micrometer, gloss meter and microhardness tester. The results show that EFSF technology can significantly improve the surface quality of tungsten. It can obtain a highmirror surface with roughness of 0.154 μm and glossness of 223.1 GU.However, EFSF technology has a surface quality improvement threshold. When the roughness is reduced to a certain level (such as Ra<0.3 μm), the cost-effectiveness of “roughness improvement/material loss” is relatively low. At the same time, EFSF technology can obtain a high-quality surface with low stress and stable surface hardness. After processing for >10 minutes, the hardness is basically stable at 228.4 MPa. So EFSF technology can achieve high-mirror, low-damage, low-stress polishing surface of tungsten. This paper provides a new option for high-quality and environmentally friendly surface finishing of tungsten.