The Synthesis of Titanium Aluminide with Carbon Addition as a High Coefficient of Thermal Expansion Fiber Utilizing Plasma-Assisted Chemical Vapor Deposition

等离子体辅助化学气相沉积法合成加碳高热膨胀系数铝化钛纤维

• 批准号: 9060355
• 负责人: James Withers
• 金额: $ 5万
• 依托单位: Materials and Electrochemical Research Corporation (MER)
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-01-01 至 1991-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9060355&HistoricalAwards=false
• 关键词: Synthesis; Titanium; Aluminide; Carbon; Addition

New high expansion thermally stable multifilament fiber reinforcements are key to developing significant advances in composite materials. It has been identified that titanium aluminides allayed with carbon is a highly desirable high coefficient of thermal expansion, thermally stable materials for reinforcing aluminide intermetallics and other matrices. Conventional fiber forming methods including thermal chemical vapor deposition (CPD) has not produced the desired composition of titanium aluminide allayed with carbon. Recently plasma assist CVD (PACVD) has been demonstrated to produce aluminide intermetallic particles and multifilament fibers of TiB2, SiC and TiC on multifilament substrates of graphite, quartz and molybdenim wire. The PACVD process is explored here to produce titanium aluminide allayed with carbon fibers on multifilament substrates of graphite and other substrates. Metal evaporation and CVD are combined in a plasma to synthesize titanium aluminide allayed with carbon as a fiber material.

新型高膨胀热稳定复丝纤维 增强是发展重大进步的关键， 复合材料 经鉴定，钛 用碳铝化的铝化物是非常理想的高 热膨胀系数，热稳定材料， 增强铝化物金属间化合物和其它基体。 常规的纤维形成方法，包括热化学 气相沉积（CPD）没有产生所需的组成 铝化钛和碳的混合物 最近血浆 已经证明辅助CVD（PACVD）可以产生铝化物 金属间化合物颗粒和TiB 2、SiC和 TiC在石墨、石英和 粗斜纹棉布线。 PACVD工艺在这里进行了探索， 铝化钛与碳纤维复合 石墨衬底和其它衬底。 金属蒸发 和CVD在等离子体中结合合成铝化钛， 以碳作为纤维材料。