VISIBLE LIGHT PATIENT INFORMATION/TRACKING SYSTEM

Not Available Spacecraft structural components operate under extreme temperatures, and stresses. These harsh operating conditions and the necessity of using materials with high strength-to-weight ratio requires the use of advanced materials such as carbon-carbon (C/C) composites. Poor oxidation resistance is a major problem for C/C composites which limits their use to inert atmospheres or applications requiring short-term exposure to air. The most common methods to apply the surface coatings are by chemical vapor deposition and slurry coatings. However, these methods involve the use of vacuum which will not permit these techniques to be used on large scale structures. Hence, there exists a need to develop a surface coating technology to improve the service life of C/C composites above their current capabilities. Karta proposes to develop an innovative coating technology using lasers for forming complex phase coatings on C/C composites to improve their oxidation resistance. The technique involves preparation of a complex composition salt paste, placement of the paste on the composite substrate, and irradiation of the paste and the substrate with a laser. The microstructure and oxidation resistance coated samples will be evaluated. The inherent advantages of laser processing makes this approach very promising and has the capability to meet the industrial needs in enhancing the performance of composites.