Tungsten carbide reinforced aluminum matrix composite material is a new radiation protection material. Its γ-ray and neutron shielding performance is more excellent than lead. It also has the advantages of high specific stiffness, high specific strength, excellent plasticity, and high stability. More importantly, it is environmentally friendly. So, this new type of radiation protection material is widely used in medical shielding and other fields.

Non-toxic and environmentally-friendly tungsten heavy alloy is an ideal anti-radiation material for applying in the field of medical shielding. Tungsten heavy alloy is a ternary alloy composed of 90-98% W and a small amount of Ni, Fe or Cu. There are mainly two series of tungsten heavy alloys including W-Ni-Fe alloy and W-Ni-Cu alloy.

As a ray shielding material, tungsten-based composite material does not have the disadvantages of secondary toughening radiation, low hardness, and toxicity that exist in lead alloys and lead-containing glasses. Therefore, tungsten-based composite material is regarded as a potential substitute for lead to be used in medical shielding.

Tungsten alloy leaf can be applied to multileaf collimator - an important part of medical linear accelerator. And there are many tungsten alloy leaves arranged closely to replace a whole lead block on the head of accelerator. The distance between each tungsten alloy leaf is very small. If dust particles or other dirty things settle on tungsten alloy leaves, it will cause the multileaf collimator to malfunction, so these leaves should be cleaned. Well, how to clean tungsten alloy leaf of multileaf collimator?

Tungsten trioxide is an important electrochemical material for saving energy and protecting environment. You know, many people are becoming aware of the importance of renewable energy resources with the growth of world population and the subsequent growth of demands for energy. While the uncontrollable and periodic nature of these energy resources has intensified the need for an efficient energy savers system.

Tungsten trioxide is a new type of electrochromic material that is able to reversibly and persistently change its optical properties at an external voltage. Tungsten trioxide is considered as one of the most promising candidates for fabricating energy-saving smart window.

It has been reported that some experts fabricated nanocrystalline tungsten oxide based NO2 sensor by thin film microfabrication technique. And the sensitivity of this NO2 sensor was at parts per billion (ppb) level.

Tungsten oxide nano-urchins are paid much attention due to good electrochromic performance. You know, tungsten oxide as an inorganic electrochromic material has attracted considerable attention as it is promising in applications of electrochromic glass - energy-saving smart glass having high shielding performance to near-infrared rays and high transmittance to visible light.

W18O49 is an important material for fabricating infrared-shielding film, to sufficiently transmit visible rays and shield invisible near-infrared rays. Some experts prepared W18O49 powder by heating a mixture containing a predetermined amount of a tungsten compound at 550 °C in a reductive atmosphere for 1 h, then cooled to room temperature once in an argon atmosphere.

It has been reported that amorphous tungsten oxide thin film has good optical absorption to shield near-infrared rays, thereby reducing room temperature in hot summer and saving powder rate for cooling the room by using air conditioners or fans. Some experts have investigated the electrochromic color centers of amorphous tungsten oxide thin film by the Raman scattering method.