摘要
针对质子交换膜燃料电池流道水气管理问题,采用纳秒激光刻蚀技术在不锈钢表面制备微凸起织构,系统研究激光功率、扫描速度、重复频率、加工次数等参数对织构形貌的影响,并筛选4组参数。通过可视化试验发现,深宽比为1.25的微凸起流道排水效率最佳,与光滑流道相比,其液滴流速更快,低压力、低进水速度残留更少,为燃料电池流道模具优化提供依据。
In order to solve the water-gas management issue in proton exchange membrane fuel cell(PEMFC)flow channels,the micro-protrusion textures on stainless steel surfaces were fabri⁃cated by using nanosecond laser etching.The effects of laser parameters(power,scanning speed,frequency,and processing times)on texture morphology were systematically investigated,and four optimal parameter combinations were screened.Visualization experiments revealed that the micro-protrusion channel with an aspect ratio of 1.25 exhibited the best drainage efficiency.Com⁃pared with smooth channels,it demonstrated faster liquid droplet velocity and less residue under low-pressure and low-inflow conditions,providing a basis for optimizing PEMFC flow channel design.
作者
韦瑞雪
解玄
李磊
唐昌悟
徐壮华
吴桂勇
WEI Ruixue;XIE Xuan;LI Lei;TANG Changwu;XU Zhuanghua;WU Guiyong(Guangxi First Industrial School,Nanning 530001,China;School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China;School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China;Guangxi Vocational College of Safety Engineering,Nanning 530001,China)
出处
《模具工业》
2025年第9期55-69,共15页
Die & Mould Industry
基金
江苏省自然科学基金项目(BK20230534)
中国博士后面上基金项目(2023M730757)
广西壮族自治区2024年度应急管理联合创新科技攻关项目(2024GXYJ007)。
关键词
激光刻蚀
微凸起结构
燃料电池
laser etching
micro-protrusion structure
fuel cell
