How to prepare yellow tungsten oxide? More specifically, how to prepare yellow tungsten oxide powder with excellent photochromic property? Yellow tungsten oxide, also called tungsten trioxide or WO3, is commonly used in the fields of light regulation, optical switch, optical information storage, optical device materials, optical information genetic materials, etc. Therefore, it is essential to prepare tungsten trioxide with excellent photochromic properties.

Nano yellow tungsten oxide, namely nano tungsten trioxide or nano WO3, is an extremely attractive semiconductor photocatalytic material that has broad application prospects in environmental pollution purification and energy regeneration. Compared with the commonly used photocatalytic materials such as titanium dioxide (TiO2) and zinc oxide (ZnO), tungsten trioxide has a smaller band gap and a larger light absorption range, which can use visible light more effectively. Wherein, visible light accounts for nearly 50% of solar radiation energy.

Yellow tungsten oxide is a common name of tungsten trioxide (WO3) from its appearance – yellow powdery crystals, which has excellent characteristics such as electrochromism, photochromism, and gasochromism. Well, do you know what are applications of yellow tungsten oxide?

Yellow tungsten oxide, which is also referred to as tungsten trioxide or WO3, has excellent electrochromic property. It is excellent electrochromic property that makes yellow tungsten oxide become a typical cathode electrochromic material. And the amorphous WO3 film is considered to be one of the most promising electrochromic materials. And therefore, WO3 is often seen in researches on electrochromic devices such as smart windows.

Tungsten carbide shield cutter is an important part of shield tunneling machine, and supercoarse tungsten carbide is an important raw material for manufacturing the shield cutter. According to the experts, with the development of domestic shield technology, shield tunneling machines are more and more widely used in subway, municipal and underground pipe network construction projects. As the key raw material of shield cutter, the performance of tungsten carbide determines the life of shield cutter, and also determines the digging efficiency and economic benefit of the entire project.

Tungsten carbide spiral flute tap is a kind of tapping tool, and it is also well-known as the most mainstream tool for processing internal thread. The processing speed of spiral flute taps made using high quality tungsten carbide powder as raw material is several times faster than that of high-speed steel spiral flute taps. It means that using the tungsten carbide spiral flute tap, the processing efficiency is high and the cost is relatively low.

Tungsten carbide straight flute tap is a type of tungsten carbide tap, which is more wear-resistant with higher hardness, better tapping performance and longer service life than straight flute taps made of steel materials. Therefore, it is often used for processing aluminum parts, stainless steel parts and other steel parts, etc. Such straight flute taps made of high-quality tungsten carbide powder are suitable for applying to drilling machines, tapping machines, automatic lathes and milling machines.

Tungsten carbide screw tap is the most mainstream tool for processing internal threads (tapping) as it has characteristics of high hardness, high strength, precise thread, sharp and wear-resistant cutting edges, fast processing speed, high precision, good chip removal effect and durability. And therefore, it has wide range of applications in tapping stainless steel, die steel, cast iron, alloy steel and carbon steel, etc.

A cutter applied for a tunnel boring machine (TBM) is mainly tungsten carbide cutter as tungsten carbide has unique properties, such as good wear resistance, high hardness, high compressive strength, high elastic modulus, strong impact resistance, high corrosion resistance, and dimensional stability. Tungsten carbide cutters applied for a TBM have different types including tungsten carbide hobs, tungsten carbide scrapers, tungsten carbide tooth cutters, and so on.

Tungsten carbide tile cutter, which is also called cemented carbide tile cutter, is mainly used to score or cut tiles of different hardness and thickness. The scoring and cutting effects are good, the speed is fast, and the service life is longer.