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High-density tungsten alloy is mainly made of tungsten (usually between 85% and 99%) as the matrix, with nickel, iron, copper and other elements added through the powder-metallurgy process. It is characterized by high density, high strength and hardness, good electrical and thermal conductivity, a small thermal-expansion coefficient, excellent corrosion and oxidation resistance, good machinability and weldability, and outstanding radiation-absorption capacity. Due to its unique properties, high-density tungsten alloy has numerous applications. Aerospace In the aerospace field, high-density tungsten alloy is…

Tungsten disulfide nanosheet (WS? nanosheet) is a two-dimensional nanomaterial with a unique structure. Its crystal structure consists of a layer of tungsten atoms sandwiched between two layers of sulfur atoms, forming a sandwich-like layered arrangement through covalent bonds and van der Waals forces. This structure gives WS? nanosheet excellent physical and chemical properties, making it widely used. In the field of lubrication, tungsten disulfide nanosheet is known as “revolutionary material in the field of lubrication.” Its ultra-low friction coefficient and…

Tungsten oxide is a typical transition metal oxide and a common tungsten compound. Its chemical formula is usually expressed as WO?, but in practical applications, due to the existence of oxygen vacancy, its chemical composition may deviate from the ideal stoichiometric ratio, so it is often expressed as WO??? (where x is between 0 and 1). This oxygen vacancy phenomenon causes tungsten to be pentavalent or tetravalent in tungsten oxide, further enriching its physical and chemical properties. The crystal structure…

In the context of increasing environmental awareness today, how to efficiently degrade organic pollutants has become an important topic in the field of scientific research. Tungsten oxide (WO?-x), as an emerging photocatalytic material, is gradually emerging in this field and has attracted the attention of many researchers. Its emergence has brought new hope and possibilities for solving the problem of organic pollutants. 1. Basic characteristics of tungsten oxide Tungsten oxide, an inorganic compound made up of tungsten and oxygen, has…

As a highly anticipated transition metal dichalcogenide (TMDC) material, tungsten disulfide nanosheet (WS? nanosheet) exhibits a series of excellent optical property due to its unique layered structure and is widely used in the manufacture of high-performance devices such as photodetectors, solar cells and optical sensors. Light absorption characteristics Broadband light absorption: Tungsten disulfide nanosheet exhibits a wide range of light absorption capabilities in the visible to near-infrared region. This characteristic is mainly due to its complex internal electronic transition mechanism,…

Tungsten disulfide nanosheet is a typical transition metal sulfide. It is a black powder with a chemical formula of WS? and a molecular weight of 247.97. It has the characteristics of low friction coefficient, good thermochemical stability and photoelectric properties. It is widely used in lubricants, catalysts, energy storage electrode materials and other fields. Tungsten disulfide nanosheet is a black-gray powder with a relative density of 7.51. In terms of solubility, it has only a weak solubility in cold water,…

Tungsten oxide, as the core “secret weapon” of smart windows, is like a bright star in the field of materials science, shining with a unique light. Its chemical formula is WO?-x, which is a compound formed by the close combination of tungsten and oxygen. Its appearance presents a variety of colors, the most common of which are light yellow, yellow, orange-yellow, blue and purple, as if it was given a unique color code by nature. From the physical properties, tungsten…