SBIR Phase I:Development of Oxidation Resistant Coating System for C/C Composite by Solution Approach

这项小型企业创新研究(SBIR)的第一阶段研究旨在开发一种用于碳/碳(C/C)复合材料的双层保护涂层系统，使用一种新颖、低成本的溶胶凝胶法。双层涂层技术的成功已经被该公司早先证明了-S使用物理气相沉积(PVD)工艺，但这是相当昂贵的。这项拟议的研究旨在使用低成本工艺来实现与整体低成本制造工艺相同的质量和性能目标。C/C复合材料用于构建暴露在极端温度和其他恶劣环境(例如，机场跑道和飞机除冰化学品，以及在加油期间执行的维护检查期间使用指示温度的蜡笔)的飞机刹车系统的压力垫。这种接触化学物质会加速碳复合材料的氧化和刹车的过早失效。目前使用的防氧化技术不足以达到设计要求的制动器寿命。因此，这项技术凭借其新颖、低成本的涂层工艺，对提高关键刹车片的使用寿命具有显著的好处。如果成功开发并在商业规模上实施，这项技术的更广泛影响将显著提高飞机关键部件的性能。这项技术的其他潜在民用市场将是汽车赛车发动机，这些发动机在比赛期间也会经历非常恶劣的操作环境。此外，这项技术还可以为美国S高速公路上运行的长途运输钻机的刹车片使用C/C复合材料开辟新的应用领域。因此，这项技术的成功开发和实施将通过提高关键制动系统的可靠性和耐用性，对美国民用和军用车辆产生重大影响，这将挽救生命，提高燃料效率，并提高我们关键交通基础设施的性能。

This Small Business Innovation Research (SBIR) phase I research aims to develop a dual-layer protective coating system for carbon/carbon (C/C) composites, using a novel, low-cost sol-gel method. The success of the dual-layer coating technology has been proven earlier by the company?s the physical vapor deposition (PVD) process, which is, however, quite expensive. The proposed research aims to use a low-coast process to achieve the same quality and performance goals with an overall low-cost manufacturing process. The C/C composites are used in the construction of pressure pads for aircraft braking systems exposed to extremes of temperatures and other harsh environments (e.g. airport runways and aircraft de-icing chemicals and use of temperature-indicating crayons during maintenance checks performed during refueling). This exposure to chemicals accelerates oxidation of the carbon composites and premature failure of brakes. The currently used oxidation protection technology is not adequate for the achievement of lifetime of the brakes as specified by the design. Thus, this technology, with its novel, low-cost coating process, has a significant benefit for improving the service life of critical brake pads.The broader impacts of this technology, if successfully developed and implemented on a commercial scale, will significantly improve the performance of a critical aircraft component. Other potential civilian markets for this technology will be in the auto race car engines which also experience very harsh operating environments during racing events. Additionally, this technology could open up new applications for the use of C/C composites in brake pads in the long-haul transportation rigs running on America?s highways. Thus, successful development an implementation of this technology will have significant impact on the U.S civilian and military vehicles, by improving the reliabilityand durability of the critical braking systems, which will save lives, improve fuel efficiency and performance of our critical transportation infrastructure.