哈氏合金X和C-276的力学性能及其在氢燃料电池双极板的应用研究  

MECHANICAL PROPERTIES OF HASTELLOY X AND C-276 AND THEIR APPLICATION IN HYDROGEN FUEL CELL BIPOLAR PLATES

作　　者：柳梓萌 钟嘉城 张檬 侯蓓蕊 张文敏 赵春旺 LIU Zimeng;ZHONG Jiacheng;ZHANG Meng;HOU Beirui;ZHANG Wenmin;ZHAO Chunwang(School of Materials Science and Hydrogen Energy,Foshan University,Foshan 528000,Guangdong,China;Guangdong Key Laboratory for Hydrogen Energy Technologies,Foshan 528000,Guangdong,China)

机构地区：[1]佛山科学技术学院材料科学与氢能学院,广东佛山528000 [2]广东省氢能技术重点实验室,广东佛山528000

出　　处：《力学与实践》2023年第6期1274-1280,共7页Mechanics in Engineering

基　　金：广东省氢能技术重点实验室建设项目(No.2018B030322005);广东省高校创新团队项目(No.2023KCXTD030);广东省高校工程技术研究中心项目(No.2019GCZX002)资助。

摘　　要：双极板是氢燃料电池的核心部件,由于其工作环境具有腐蚀性,要求双极板材料既具有良好力学性能,又具有良好耐腐蚀性能。本研究主要对两种典型哈氏合金Hastelloy X和Hastelloy C-276的力学性能及其作为氢燃料双极板材料的耐腐蚀性能进行测试,作为参照,也对典型不锈钢材料304 SS进行相同测试。力学性能测试结果表明,Hastelloy X,Hastelloy C-276和304 SS这3种合金材料均展现良好的延展性、较高的强度和硬度,其中Hastelloy C-276的均匀伸长率可达51.6%、硬度可达361.2 HV,Hastelloy X的屈服强度高达444.8 MPa;耐腐蚀性能测试结果表明,Hastelloy C-276在模拟的氢燃料电池腐蚀溶液(0.5 mol/L H_2SO_4+2 mg/L HF,80℃)中呈现出良好的耐腐蚀性。综合来看,Hastelloy C-276的服役性能明显高于Hastelloy X和304 SS,是最有潜力的氢燃料电池金属双极板材料。Bipolar plates are the key component of hydrogen fuel cells.Due to their corrosive working environment,the bipolar plate materials are required to have both good mechanical properties and corrosion resistance.This study mainly tests the mechanical properties and the corrosion resistance as hydrogen fuel bipolar plate materials of two typical Hastelloy alloys namely Hastelloy X and Hastelloy C-276.As a reference,the same tests were also carried out for a typical stainless steel material 304 SS.The testing results of the mechanical properties show that all Hastelloy X,Hastelloy C-276 and 304 SS exhibit good ductility,high strength and hardness.Among them,Hastelloy C-276 has uniform elongation of 51.6%and hardness of 361.2 HV,while Hastelloy X has yield strength as high as 444.8 MPa.The testing results for corrosion resistance show that Hastelloy C-276 has the highest corrosion resistance in a simulated hydrogen fuel cell corrosion solution(0.5 mol/L H_2SO_4+2 mg/L HF,80o C).In general,the service performance of Hastelloy C-276 is significantly higher than Hastelloy X and304 SS,and it is the most potential metal bipolar plate material for hydrogen fuel cells.

关 键 词：金属双极板 屈服强度 均匀伸长率 硬度 耐腐蚀性能 

分 类 号：O341[理学—固体力学]