Tungsten alloy collimator is a device used to restrict the photon acceptance angle to provide positional information for detected photons. SPECT tungsten alloy collimator is a thick sheet of tungsten alloy of high atomic number, pierced by an array of holes.

Tungsten alloy collimator is an important part of a gamma camera (γ camera). And it plays the role of radiation guidance (collimation) and radiation protection (reducing the patient's exposure to gamma rays) on the core component of the gamma camera.

Ion fan tungsten needle refers to the tungsten needle used for an ion fan. Wherein, the ion fan has excellent anti-static performance, can prevent static electricity pollution, and is small, light, and easy to install. It is an ideal equipment for personal static protection areas such as electronic production lines and maintenance stations.

Argon arc welding tungsten needle is more often known as argon arc welding tungsten electrode. And such a needle may be a thoriated tungsten electrode, a cerium tungsten electrode, or a lanthanated tungsten electrode, etc.

TIG welding lanthanated tungsten electrode has no radioactive hazard, and has high durability current, minimum burnout rate, excellent welding performance, and the closest electrical conductivity to 2% thoriated tungsten electrode. Therefore, it is mainly used to replace the radioactively contaminated thoriated tungsten electrode.

TIG welding thoriated tungsten electrode has excellent comprehensive performance, especially can withstand overload current. It is easy to start the arc and not easy to deform. And it has characteristics of long service life, anti-oxidation, continuous arc during welding, stable arc, and no scattered arc.

How to prepare nano-porous yellow tungsten oxide photocatalyst? Or how to prepare nano-porous WO3 photocatalyst? The researchers proposed a method to prepare porous WO3 with characteristics of good chemical stability and easy separation. And the process will not cause secondary pollution to the environment.

It is reported that porous yellow tungsten oxide, or porous tungsten trioxide (WO3), is an ideal photocatalytic material as the pore structure has a strong ability to degrade dyes. Therefore, tungsten trioxide with pore structure can be used to photodegrade dyes in industrial wastewater.

Studies have shown that yellow tungsten oxide, or tungsten trioxide (WO3), can be used as a catalyst to prepare a new type of air purification composite coating – an environmentally friendly functional coating.

Researchers proposed a preparation method of TiO2-WO3 photocatalyst. The obtained TiO2-WO3 photocatalyst has strong visible light absorption at 400-800 nm, and has good efficiency for photocatalytic degradation of gas-phase toluene.