论文部分内容阅读
无人飞行动力装置的巨大发展已经给航宇应用方面的陶瓷市场带来了新的发展机会。和现今已经或准备应用在高级喷气发动机高温部位的材料相比,陶瓷的耐高温性能要优越得多。但陶瓷是脆性极大的材料,在热应力或机械应力作用下容易发生破裂。过去,这一脆性问题使得航空发动机工程师们,即使在有人驾驶飞机喷气发动机静止叶片上也不敢采用陶瓷材料。现在,由于导弹和无人驾驶飞机为小型无人驾驶涡轮动力装置开辟了广阔市场,设计人员正在重新估价廉价陶瓷材料的高性能的潜力。
The immense development of unmanned power plants has given new opportunities for development in the ceramics market for aerospace applications. Compared with the materials that are used or ready to be applied to the hot areas of advanced jet engines today, the high temperature resistance of ceramics is much better. But ceramic is a very brittle material, prone to rupture under thermal or mechanical stress. In the past, this brittleness issue has caused aeroengine engineers to dare not use ceramic materials even on stationary blades of manned jet engines. Now that missiles and drones open up vast markets for small, unmanned turbine power units, designers are reevaluating the high-performance potential of cheap ceramic materials.