Tungsten disulfide is a fine gray crystalline or powder with metallic luster. It belongs to hexagonal crystal system. It has semiconductor and diamagnetic properties, layered structure, easy dissociation, and lubricating properties similar to graphite. It is mainly used as lubricant. Its performance is better than molybdenum disulfide, its friction coefficient is lower and its compressive strength is higher. Equipment used alone in high temperature, high pressure, high speed, high load and in chemical active medium.

Transition metal oxides can be used in various fields. Molybdenum oxide and tungsten oxide, as two important transition metal oxides, have attracted the attention of scholars and experts in the fields of photocatalysis and gas sensors for a long time. In the past few years, it has been found that the properties of binary molybdenum tungsten oxide (MoxW₁-xO₃) materials can be greatly improved due to the "synergistic effect" of the two elements. Therefore, by changing the composition and structure of materials, we can make this "synergistic effect" play a stronger role.

Tungsten carbide is the main raw material for the manufacture of cemented carbide products, and its particle size has a decisive influence on the properties of cemented carbide products. The preparation of nano-tungsten carbide has become the main way to improve the strength and toughness of cemented carbide products. Cemented carbide is brittle material. There is a contradiction between its hardness and strength. High hardness leads to low strength, while high strength leads to low hardness.

At present, the main methods for preparing zirconium tungstate are solid phase reaction sintering, sol-gel method, hydrothermal method, co precipitation method, microwave synthesis method, combustion method, laser sintering method, spray drying method, etc. Among them, the preparation cycle of sol gel method is too long to be used. The reaction principle of hydrothermal method is complex and the time is long. The coprecipitation process is cumbersome and difficult to control. The solid phase reaction sintering method has the advantages of simple principle, simple operation and limited conditions. Therefore, at present, solid-state reaction sintering method can rapidly and effectively prepare zirconium tungstate.

At present, the commonly used preparation methods of tungsten trioxide thin films are atomic layer deposition, chemical vapor deposition, electrodeposition and so on. However, the tungsten trioxide thin film method developed based on the above methods requires high equipment, complex preparation process, high cost, and can not prepare large-area films.

PM2.5 is an important factor affecting air quality. Coal-fired power plants, oil-fired automobile ships, especially diesel engine automobile ships, are the sources of PM2.5. With the development of China's automotive industry and the increase of car ownership, the treatment technology of automotive exhaust has attracted more and more attention.

The traditional preparation of tungsten alloys is mostly based on sintering technology, which leads to a series of problems such as low densification, uneven microstructure and limited composition of tungsten-based alloys. It is mainly reflected in the slow preparation speed, low efficiency and high preparation cost.

Tungsten plays an important role in high temperature materials and functional materials. Widely used in the electronics and light source industry, in the aerospace, foundry, weapons and other departments for the production of rocket nozzles, die-casting molds, armour-piercing core, contacts, heaters and heat shields.

As a sputtering target for copper wiring diffusion barrier layer, W-Ti alloy has many requirements in structure and properties. A large number of experimental results show that the grain size and Ti-rich phase content of WTi alloy structure are the main factors affecting the performance of the barrier layer.

Molybdenum is a trace element of life needed by organisms. Lack of molybdenum in the human body can lead to a series of diseases. Such as Keshan disease, kidney stones, Kashin-Beck disease, hypertension and diabetes. In particular, molybdenum deficiency can increase the incidence of cancer and cancer.