Tungsten is an element with the highest melting point and boiling point in refractory metals, high strength and hardness, and good chemical stability under normal conditions. However, tungsten resources are strategic resources, non-renewable resources, large consumption, high price and difficult machining, all of which limit the application of tungsten.

Therefore, many researchers at home and abroad have tried to use a variety of surface engineering technology of tungsten and its alloy coating on the surface of substrate material preparation, both maximum save resources, reduce the cost, and gives the matrix materials with unique mechanical, physical and chemical properties, in order to meet the modern industry and national defense requirements for new high performance materials.

The tungsten alloy coating on the surface of the base material can be widely used in the fields of electronics, aerospace, etc., such as the throat lining material of rocket engine and space power system, X-ray and various kinds of weapon surface coating and new type of medicine cover material.