The main method of producing super coarse grained cemented carbide is the use of super coarse tungsten carbide powder and cobalt powder as raw materials. It is pressed and sintered to become a product after batching, ball milling, drying and granulation. However, the ultra coarse tungsten carbide powder will break in the process of ball milling, and the grain size will decrease greatly. During the sintering process, the WC grain can not grow into an ultra coarse grained WC grain.

In the existing technology, the synthesis of tungsten oxide nanowires is mainly included in the following methods: high temperature vacuum vapor deposition, surfactant method, or anodic alumina template method. Compared with the above methods, the hydrothermal preparIn the existing technology, the synthesis of tungsten oxide nanowires is mainly included in the following methods: high temperature vacuum vapor deposition, surfactant method, or anodic alumina template method. Compared with the above methods, the hydrothermal preparation process is very simple and most widely used.ation process is very simple and most widely used.

TFT film has the advantages of high responsivity, high brightness and high contrast. It is one of the basic materials in many industries. Therefore, it is widely used in the fields of solar cells, liquid crystal displays and plasma displays. In recent years, along with the rapid development of high-end displays, tungsten molybdenum alloy rotating target is an important material for preparing TFT film.

arsenicTungsten carbide powder is the main raw material for the preparation of cemented carbide. At present, the preparation of ultra-fine tungsten carbide powder mainly includes conventional tungsten oxide hydrogen reduction-carbonization method, tungsten oxide direct reduction carbonization method, plasma chemical synthesis method, mechanical alloying method. The quality of tungsten powder directly affects the performance of cemented carbide products. In order to obtain high-performance ultra-fine WC-Co cemented carbide, the grain size of tungsten carbide must be controlled. Therefore, the preparation of ultrafine tungsten carbide powder with good dispersibility and uniform particle size distribution is the key technology for the preparation of ultrafine grained WC-Co cemented carbide.