Ammonium metatungstate powder is widely used in chemical industry as raw material of petroleum cracking catalyst, corrosion inhibitor (anticorrosive coating or coating) for electronic components, and as important raw material for preparing composite powder, doped tungsten wire and tungsten-cerium electrode in the production of tungsten products.

Tungsten disulfide lubricating material is a very good new energy-saving material for reducing wear. It can be used not only in general lubrication conditions, but also in some harsh working environments such as high temperature, low temperature, high load, high vacuum, radiation line and corrosive medium. It can be powder state or lubrication. Oil, grease and graphite, metal powder, plastics and other materials are mixed to make composite materials.

The front and rear casings of the aero-engine compressor are made of iron-based and nickel-based alloys respectively. During the process of use, the butt joints of the front and rear casings are in vibration and are prone to impact wear. The original wear-resistant coatings are due to hardness. The lower the toughness, the more damage occurs after a period of wear, and the life of the front and rear casings is shortened. Therefore, it is an urgent problem to prepare a coating with high wear resistance to solve the wear of aviation equipment and prolong the service life of aviation equipment.

Graphene is a new kind of carbon material, which is closely packed by carbon atoms into a single layer of two-dimensional honeycomb lattice structure. It is the basic unit of building the most commonly used solid lubricant-graphite. It has lower friction coefficient than graphite. It is a new kind of additive for self-lubricating antiwear coating.