A New Solid–Gas Phase Reaction to Prepare Ammonium Paratungstate(APT)

SEM images of the precursor oxides produced from APT-2

The ammonium paratungstate (APT) is the most important starting material in the tungsten industry, where usually its most stable APTÂ4H2O form is used. Tungsten compounds such as, tungsten oxides, tungsten carbides or tungsten metal can be prepared with APT.  All these tungsten products have important applications in a many fields. Among which, tungsten oxides are widely used in catalysts, gas sensors, and photocatalysts. Tungsten carbide products have been used as catalysts as well, but another important application field they shared is being the hard component in cutting and drilling tools.

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Tungsten Carbide Graver

tungsten carbide graver picture

Tungsten carbide graver is also known as cemented carbide graver, which has higher hardness, better wear resistance and longer service life than the commonly used carbon steel graver and white steel graver. Wherein, carbon steel graver is generally suitable for beginners as it has low hardness and strength.

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Tungsten Carbide Cutting Wheel

tungsten carbide cutting wheel picture

Tungsten carbide cutting wheel is mainly composed of a WC hard phase and a Co bonding phase, which is suitable for cutting brittle materials such as ceramic tiles, glass, glazed tiles, polished tiles, etc.

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Tungsten Carbide Glass Cutter

tungsten carbide glass cutter picture

Tungsten carbide glass cutter is a tool used for cutting or scoring glass such as LCD optical glass, quartz glass, and crystal glass. There is a small wheel of tungsten carbide materials. Such a glass cutter has the characteristics of high hardness, good wear resistance, straight scribing, no edge collapse and long service life.

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Tungsten Carbide Scriber

tungsten carbide scriber picture

Tungsten carbide scriber is a fitter tool that is mainly applied for scribing on the surface of different workpieces such as steel plates, and ceramic tiles. The scriber made of high quality tungsten carbide is often used in conjunction with guide tools including steel rulers and scribing templates, etc.

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