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: 9201915
• 负责人: James Withers
• 金额: $ 25万
• 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: 1993
• 资助国家: 美国
• 起止时间: 1993-06-01 至 1996-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9201915&HistoricalAwards=false
• 关键词: Synthesis; Titanium; Aluminide; Carbon; Addition

This project examines the use of titanium-aluminum carbides as a possible reinforcement in titanium- and nickel-matrix composites. The process of producing limited amounts of the fibers was demonstrated previously in a Phase I project. The fiber is a titanium/aluminum carbide, Ti3AlC, formed from plasma-assisted chemical vapor deposition (PACVD) onto a graphite fiber tow. In the Phase II program the PACVD process is optimized using a laboratory scale continuous system to produce Ti3AlC multifilament tows and Ti3AlC deposits on substrates other than graphite. Attention is directed towards matching coefficient of thermal expansions of the fiber and matrix. The properties of the fiber and its performance in metal composites is examined. High strength, stable fibers are important for reinforcing metal matrix composites. Application of the fibers under development here could include composites for structural and engine components in aerospace systems and energy conversion devices.

该项目研究了钛铝碳化物作为一种 钛基和镍基复合材料中可能的增强。 生产有限数量纤维的过程是 在第一阶段的项目中已经展示过。 述纤维是 钛/铝碳化物，Ti 3AlC，由等离子体辅助形成 化学气相沉积（PACVD）到石墨纤维束上。 在 在第二阶段计划中，PACVD工艺采用 实验室规模连续系统生产Ti 3AlC 复丝丝束和Ti 3AlC沉积物在基底上， 石墨 注意力集中在匹配系数上， 纤维和基质的热膨胀。 的性质 研究了纤维及其在金属复合材料中的性能。 高强度、稳定的纤维对于增强金属是重要的 基复合材料 正在开发的纤维的应用 这里可以包括用于结构和发动机复合材料 航空航天系统和能量转换装置中的零部件。