New Generation of Atomic Clocks - Physics

Not Available Carbon-carbon(CC)composite materials are materials that consist of carbon fiber reinforcing a matrix of carbon. Their properties can be tailored to produce varying levels of high thermal conductivity and thermal shock resistance, low thermal expansion, low porosity, low density, high wear resistance, and high or low surface friction, while remaining chemically inert and maintaining their properties at extremely high temperatures. Current state-of-the-art technology for large/thick 3D materials (10X10X6 inches) results in a cost of ~$1000/lb. The main objective of this work will be to adapt and couple high-performance/low-cost 3TEX 3D woven preforms with large scale batch densification by Carbon Vapor Infiltration (CVI). The resulting materials will be completely tailorable and cost an order of magnitude less. This objective will be accomplished by reducing the cost of 3D preforms with the use of the innovative 3TEX high-speed/low-cost 3D weaving process. The lower cost 3D preforms will be densified by CVI in a mass production batch process, by 3TEX partner SGL Carbon Composites Inc. (Hitco), the world leader in CC materials and CVI processing. In addition to DoD needs, this new technology will be used to exploit the huge commercial potential of low cost CC pistons for racing engines.