Advanced Corrosion Resistant Materials for Electrochemical Applications

用于电化学应用的先进耐腐蚀材料

• 批准号: 8960026
• 负责人: Srinivasan Sarangapani
• 金额: $ 5万
• 依托单位: GINER, INC.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-01-01 至 1990-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8960026&HistoricalAwards=false
• 关键词: Advanced; Corrosion; Resistant; Materials; Electrochemical

Deposition of thin diamond films by plasma assisted chemical vapor deposition (PACVD) is a rapidly emerging area of technology being pursued in The United States, Japan and the Soviet Union. Diamond films have unique chemical and physical properties such as oxidation resistance and hardness. Boron-doped diamond films grown by PACVD can have electrical resistivities approaching 1 ohm-cm. Pore-free, adherent films of less than 1-micron thickness have already been deposited on tungsten substrates. The goal of this study is to evaluate these films as an electrically conductive, corrosion-resistant coating for bipolar separator plates (carbon-carbon composites) in phosphoric acid fuel cells (PAFC). Present plate designs fail because of corrosion of the carbon filler and acid absorption by the plate which leads to eventual shoring of the cell. Thin diamond films deposited on the bipolar plates, in addition to being corrosion resistant, can also act as a barrier layer, thus preventing acid absorption.

等离子体辅助化学沉积金刚石薄膜 气相沉积（PACVD）是一个迅速兴起的技术领域 美国、日本和苏联都在追捕他 金刚石薄膜具有独特的化学和物理性质， 如抗氧化性和硬度。 掺硼金刚石薄膜 通过PACVD生长的晶体可以具有接近1 欧姆-厘米 小于1微米的无孔粘附膜 厚度已经沉积在钨衬底上。 这项研究的目的是评估这些电影作为一个 用于双极的导电耐腐蚀涂层 磷酸中的隔板（碳-碳复合材料） 燃料电池（PAFC）。 目前的接骨板设计失败的原因是 碳填料的腐蚀和板的酸吸收 这导致最终支撑细胞。 金刚石薄膜 沉积在双极板上， 耐腐蚀，也可以作为一个屏障层，从而防止酸 吸收。