Observing Tungsten Oxides Aggregate

Using scanning electron observed tungsten oxides aggregate exterior morphology and the internal structure found little difference in different tungsten oxides, which have retained the appearance characteristics of raw material APT. But the particle size change largely. Different tungsten oxides surface features are not quite the same which observed by high-powered electron microscope. Including yellow tungsten oxide and blue tungsten oxide which the W₂₀O₅₈ and ATB are main phase large particles have varying degrees fragmentation and full of cracks. The morphology of violet tungsten is different with other three tungsten oxide. Its particles are loose and large which is made up of needle-like or rod-like grains.

Observe the internal structure of tungsten oxide aggregate found all the internal structure of tungsten oxides have a wealth of cracks, on the other hand violet tungsten oxide not only has rich crack and the interior particles are needle or rod shape. This structure making violet tungsten oxide has large particle voids, making its particles more loosely, so it is conducive to the hydrogen get into particle inside and steam escape in reduction process. So that the reduction reaction may take place not only at the surface, can occur simultaneously in the interior, beside the reaction speed is quick and tungsten powder are fine and uniform.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn
 

• < Prev
• Next >