一、导言粉末冶金是一项无切削或少切削的先进工艺,它不但能够节约大量有色金属和优质钢材,而且能够节约大量加工工时和机床设备,一些用机械加工无法实现的工艺过程,采用粉末冶金却都往往可以实现。因此,随着技术革新和技术革命的蓬勃发展,粉末冶金愈来愈受到人们的普遍重视。目前,粉末冶金在仪表、冶金、机械、电器、化工、石油、纺织、汽车、计算机等方面均有比较普遍的应用,而且亦应用在空间技术和超硬、耐磨、耐热合金的生产方面,为一些尖端技术提供特殊材料和新工艺开拓了可喜的前景。由于工业产品种类繁多,使用环境各异, I. INTRODUCTION Powder metallurgy is an advanced technology with no cutting or less cutting. It not only can save a lot of non-ferrous metals and high-quality steel, but also can save a lot of processing time and machine tools and equipment, some can not be achieved by mechanical processing, using powder Metallurgy is often achievable. Therefore, with the rapid development of technological innovation and technological revolution, powder metallurgy has gained more and more universal attention. At present, powder metallurgy has more common applications in instrumentation, metallurgy, machinery, electrical appliances, chemical engineering, petroleum, textile, automobile, computer and so on. It is also used in the production of space technology and superhard, wear-resistant and heat-resistant alloys , For some cutting-edge technology to provide special materials and new technology to open up promising prospects. As a wide range of industrial products, the use of different environments,