XU Xiaoqiang ¹, QIU Jinyong ¹, DONG Dehua ², HUANG Daowei ¹, SUN Mingfeng ³

(1. Jihua Laboratory, Foshan 528200, Guangdong, China; 2. Jinan University, Jinan 250024, Shandong, China;
3. Suzhou Beifeng Laser Technology Co., Ltd, Suzhou 215000, Jiangsu, China）

Abstract: Solid oxide fuel cell (SOFC) is an all-solid state power generation device with high energy conversion efficiency and environment-friendliness. It usually consists of electrolyte, cathode and anode, which are oxide ceramic materials. As an important 3D printing technology, laser selective melting is a process to completely melt powders by using high-energy lasers. In this work, electrolyte layer of solid oxide fuel cell was prepared by using laser selective melting technology. Effects of the key process parameters, such as laser power, scanning speed and defocus distance, were evaluated. The optimal printing parameters include power of 100 W, scanning speed of 200 mm·s⁻¹ and defocus distance of 10 mm, resulting in ceramic parts with high accuracy and controllable size, which provides a new idea for the preparation of SOFC electrolyte layer.
Key words: laser selective melting; electrolyte layer; powder material; process parameters