Tungsten alloy shaped charge liner is one of the key parts of the high explosive anti-tank warhead, whose performance will directly affect the quality of the jet. Tungsten alloy shaped charge liner has the advantages of high melting point, high density, high sound velocity, good ductility, and high jet velocity. Wherein, high density and good ductility ensure that the jet can be fully stretched without breaking before erosion. And high jet velocity can reduce the effectiveness of the reaction armor. However, such a shaped charge liner also has the disadvantages of lower total jet length and sensitivity to radial disturbances.

Tungsten alloy is the most proper material for core material of armor piercing shell. Why tungsten alloy has a wide application as the core material in armor-piercing projectile? Tungsten alloy has high strength and good toughness, and is easy to be processed into cores with large length and slenderness ratio to achieve a large penetration depth and high penetration efficiency. Also, it has good terminal ballistic power and acceptable cost.

Tungsten alloy warhead is well-known in military field now. You know, warhead is a very important component of armor-piercing projectiles, rocket projectiles, and missiles that can kill and destroy enemy weapons and equipment, facilities, and enemy effectives. Tungsten alloy is widely used in various warhead materials because of their unique properties, such as high density, high melting point, high strength, and good machinability.

Rocket projectile is usually composed of a warhead, a rocket engine, and a stabilizer. And tungsten alloy such as W-Ni-Fe or W-Ni-Cu alloy balls are used in the warhead of rocket projectile. It has been reported that the warhead of the dual-purpose cluster bombs in the WS-2 rocket projectiles adopt tungsten alloy material. Its attack accuracy is very high and the attack range can reach 360 kilometers.

Tungsten alloy has become a new type of shaped charge liner material with wide application prospects due to its high melting point, high density, high sound velocity, good ductility, and good machining performance. The components of tungsten alloy material for preparing shaped charge liner material include W-Ni-Fe, W-Ni-Cu, and the like.

Tungsten alloy shotgun bullet is small. Generally, there are some spherical projectiles. At that time, from the perspective of density and hardness, lead was considered a suitable material for shotgun bullet. However, shotguns are used for hunting animals. If toxic lead bullets are used, it seems that the hunted prey is not so “safe” for eating. While tungsten alloy is non-toxic, environmentally friendly and pollution-free, so it is developed to replace traditional heavy metal lead as the projectile material.

Tungsten alloy armor piercing shell, which consists of a tungsten alloy core encased in a jacket of copper alloy, is a type of ammunition designed to penetrate armor. Such an armor piercing shell is also known as a kinetic energy armor-piercing projectile. It has been reported that the core of the former West Germany’s 105mm armor piercing discarding sabot was made of tungsten alloy containing 95%W-3.4%Ni-1.6%Fe. Its density can reach about 18 g/cm3.

Tungsten alloy bullet is a kinetic projectile that made of environmentally friendly tungsten alloy so that it is well-known as a green bullet. Tungsten alloy bullets are developed by researchers to avoid environmental pollution caused by lead bullets. What is more important is that tungsten alloy bullets have higher accuracy, lethality and penetrability than lead bullets. So, there is no doubt that tungsten alloy will be widely used to replace lead as the bullet material.

Yellow tungsten oxide, namely tungsten trioxide or WO3, is a common semiconductor photocatalytic material. Certainly, there are other common semiconductor photocatalytic materials such as TiO2, ZnO, Fe2O3 and Bi2WO6. Wherein, so far, the most studied material is TiO2. However, due to the shortcomings of TiO2 - wide band gap and low conversion efficiency of visible light, people have begun to improve the light utilization efficiency of photocatalysts from two directions:

As a new energy-saving building material, WO3 electrochromic glass has attracted more and more attention. For example, some experts use a WO3 thin film having nanocrystalline mosaic structure as an electrochromic material, and combine it with NiO to assemble an electrochromic device – an electrochromic glass, with high spectral modulation amplitude.