专利类型:  发明专利
申请号:  EP04772710
申请日期:  2004-08-27
公开号:  EP1806799B1
公开日期:  2016-09-21
申请人:  NIPPON STEEL & SUMITOMO METAL CORP
发明人:  TARUTANI YOSHIO;SEKI AKIRA;MAEDA TAKASHI;TAKAHASHI WATARU;DOI TAKASHI
地址:  
摘要:  A separator material effective for decreasing the weight of fuel cells is provided which is lightweight, has good corrosion resistance, and exhibits a minimized increase in electrical contact resistance during use for a long period. Titanium or a titanium alloy is prepared by melting so as to contain not greater than 5 mass% B, thereby forming a titanium-based material in which fine TiB-type boride particles are precipitated and dispersed. The material is then etched in an aqueous acidic solution such that some of the TiB-type boride particles are exposed on the surface through the passive film formed thereon.
主权项:  A titanium-based material for use as a fuel cell separator characterized by containing not greater than 5 mass% boron (B), the boron being present as TiB-type boride particles precipitated and dispersed throughout the material and a part of the boride particles being exposed on a passive film formed on the surface of the material to form paths for electricity.
专利分类号:  C22C32/00;H01M8/0226;H01M8/0208;H01M8/0228;C22C14/00
专利状态:  有效专利
代理人:  
代理机构:  Simons, Amanda Louise
国家及地区:  
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