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美国应用科技公司最近赢得了一项国防高级研究计划局(DARPA)的合同,将金刚石衬底的应用扩展到F—22飞机上.该合同将把所研制出的金刚石衬底应用扩展到F—22电子战阵列中的电源稳压器中.据工业界讲,与DARPA的金刚石衬底计划有关,合同商预计要继续在该领域的研究与开发工作以改进热管理.DARPA合同要求研制一种化学蒸汽沉积(CVD)金刚石用于热管理,其重点在于降低整个系统的重量.CVD金刚石是金刚石的一种小单晶凝聚物.这种材料通常以约1mm厚的晶片形式沉积在硅或钼上.然后金刚石晶片用激光切割成最终的形状.金刚石的物理性质是具有很高的热传导性以及很高的表面波传播速度,这使其在热和微波应用中成为一种非常有用的材料.例如在金刚石衬底上的电路能够提高热传导性(优于金属)并可
AIG recently won a contract from Defense Advanced Research Projects Agency (DARPA) to extend the use of diamond substrates to F-22 aircraft, which will extend the application of the diamond substrate developed to F- 22 in the electronic warfare power regulator in the array, according to industry speaking, and DARPA’s diamond substrate program, the contractor is expected to continue in this area of research and development work to improve thermal management.DARPA contract requires the development of a Chemical vapor deposition (CVD) diamond is used for thermal management, with the emphasis on reducing overall system weight. CVD diamond is a small single crystal agglomerate of diamond that is typically deposited in the form of a wafer of about 1 mm thickness on silicon or molybdenum The diamond wafer is then laser cut into the final shape.The physical properties of diamond are high thermal conductivity and high surface wave propagation velocity making it a very useful material for thermal and microwave applications. For example, a circuit on a diamond substrate can increase thermal conductivity (better than metal) and can