WO3 film, an n-type semiconductor, is used as an excellent thin film gas-sensing element in applications of gas sensors. You know, WO3 is a typical n-type gas sensing material that has attracted considerable attention to detect various hazardous gases, in the form of nano particles or thin films.

As a gas sensing material, WO3 on the nanoscale has good gas sensitivity and selectivity towards H2, CO, H2S, NH3, NOx, O3 as well as some organic gases. WO3 nano powder is a typical n-type semiconductor that is considered to be the promising material to fabricate the gas sensor, which has a widespread utilization in the environment detecting and the safety monitoring. When WO3 nanopowder contacts the gas to be measured, its resistance changes, so that the output signal changes accordingly to achieve the purpose of gas detection.

Tungsten alloy cluster bomb, which is also known as tungsten alloy cluster munition, is a container filled with small explosive bombs called “sub-munitions.” This container may be a shell, rocket, missile, or other device. Dropped from an aircraft or fired from the ground, it opens in the air and releases the tungsten alloy sub-munitions. This scatters a carpet of bombs over a large area without any degree of accuracy, to attack cluster targets such as cluster tanks, armored combat vehicles, military assembly sites, or large area targets such as airport runways.

Tungsten alloy applied for military defense is tungsten heavy alloy that is 90% to 97% pure tungsten in a matrix of nickel and copper, or nickel and iron. Why these alloying elements are necessary? That is because pure tungsten is very difficult to machine or fabricate, addition of these elements improves both the ductility and machinability of the alloys while retaining its high density. These tungsten heavy alloys are ideal for high density applications where machining is required. For example, tungsten alloy is widely used as the cores of armor-piercing projectiles, the shaped charge liners of shaped charges, the warheads of rockets and artillery shells, the rotors of missile gyroscopes, the projectiles of clusters, etc.

Tungsten alloy applied for gyroscope of antiship missile is an alloy composed of tungsten (W) as a matrix and Ni, Fe, Cu, Co, Mn and other alloying elements to form a composite structure of tungsten particles and bonding phase. The navigation gyroscope is the heart of navigation and control systems of antiship missiles and even submarines, torpedoes, satellites, rockets, and aircraft. At present, there are various advanced navigation technologies in the world, but the inertial guidance gyroscope is still the most widely used navigation instrument in the world.

It has been reported that tungsten alloy is widely used in the weapon industry because of its advantages such as high density, high strength, high toughness, and high impact toughness. And the weapon industry has become a major consumer of tungsten alloys. Well, do you know the specific applications of tungsten alloy in the weapon industry?

In terms of X-ray shielding, tungsten alloy is non-toxic and non-polluting with high strength and good processing performance, compared to commonly used X-ray shielding material lead. And high density tungsten alloy shielding is widely used in nuclear medicine as collimator, container radioactive isotope, radiation source container, etc. Well, how about the X-ray shielding property of tungsten alloy?

Tungsten alloy is a non-toxic and environmentally-friendly alloy material. As a new radiation shielding material, tungsten alloy has a better shielding effect than the traditional radiation shielding material heavy metal lead. Research shows that for gamma rays of the same energy, the shielding effect of the new radiation shielding material tungsten alloy is far better than that of lead, which provides a reference for choosing tungsten alloy as a shielding material in special occasions, and provides a new choice in the selection of shielding materials in the field of radiation protection.

Many medical devices use gamma rays to treat tumors. In order to perform accurate radiotherapy and reduce the damage of radiation to patients, gamma ray shielding materials are necessary. Tungsten alloy such as W90Ni10 alloy is a kind of γ-ray shielding material with good absorption to gamma rays.

As a new radiation shielding material, environmentally-friendly and pollution-free tungsten alloy gamma ray shielding material is expected to replace toxic heavy metal lead for the manufacture of medical shields. It is reported that the greater the density, the stronger the ability to attenuate the rays. So, what is the density of a tungsten alloy gamma ray shielding material W94Ni6 alloy prepared by laser rapid prototyping?