What is porous tungsten?
Porous tungsten is a kind of powder metallurgy tungsten product whose internal structure contains many pores (generally more than 15%), and its use is related to these porosity. According to the different raw materials used to prepare porous tungsten, it is divided into: non-spherical porous tungsten, spherical porous tungsten and tungsten fiber porous tungsten. Non-spherical porous tungsten is the most widely used, and the latter two are used in special circumstances, such as spherical porous tungsten made of spherical powder when the pores are required to be very uniform; when the strength is required, tungsten fiber is generally used to make tungsten wire reinforcement Porous composite materials.
Non-spherical porous tungsten is a product made from irregularly shaped tungsten powder through press forming and sintering processes. Uses: Used as the tungsten framework of many products, such as the framework of W-Cu and W-Ag contact materials; high-temperature filter materials, etc.
Properties of porous tungsten
Because porous tungsten is often used in high temperature conditions, such as high-temperature gas filter elements, high-voltage electrical contacts, etc., in addition to conventional performance, its high-temperature performance is very important. The properties of porous tungsten are not only related to the original powder, but also to the preparation process.
