Power metallurgy is not only material manufacturing technology but also a material processing technology. In the field of science and technology, the key problems of new materials science are needed to solve by power metallurgy. Power metallurgy has a series characteristic in technically and economically. For materials, power metallurgy can produce special performance material which can’t produce by using ordinary smelting method:
1. It can control the porosity of materials and products, as like: Powder metallurgy materials, oil bearing etc.
2. Refractory metal materials and products mainly produce by powder metallurgy method. For example: Tungsten, molybdenum, tantalum, and other refractory metals and their alloys.
3. For the system of metal and liquid metal immiscible, it can metal and metal combination materials.
4. It can use the effect of combination of metal and nonmetal making Synthetic materials. For example, the manufacture of powder metallurgy friction materials of powder metallurgy friction materials, metal - graphite brush and so on.
5. It can production all kinds of metal ceramic materials and composite materials. For example, the former has cemented carbide, ceramic, etc, the latter has a powder metallurgy dispersion strengthened materials, fiber reinforced metallurgical powder material etc.
Powder metallurgy is a necessary procedure of industrial application, the kinds of power metallurgy increasingly with the continuous improvement of economic quality. Because of power metallurgy’s technical advantages, it plays a key role in production aspect and economic benefits.
