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Blue tungsten oxide nanopowder not only may be applied for preparing thermal insulating glass material, but also can be used as a raw material for the production of ultrafine tungsten powder. In the preparation of tungsten powder, if the process conditions are controlled, it is advantageous for the preparation of fine or ultrafine tungsten powder. Therefore, some researchers used an electron probe scanner to analyze the change of phase composition of blue tungsten oxide during the reduction process for tungsten…

Nano blue tungsten oxide may be used as a raw material for preparing thermal insulating glass material. And it can also be applied to produce ultra-fine tungsten powder by hydrogen reduction method. Some researchers have conducted research on the effect of reducing process conditions on the particle size of tungsten powder. The reduction process conditions include reduction temperature, hydrogen flow rate, layer thickness, push speed, and the like. The following mainly focuses on the effect of reduction temperature on the…

Blue tungsten oxide powder, or WO2.9, which may be used to prepare thermal insulating glass material, is also a raw material for preparing ultrafine tungsten powder. Some researchers have studied the process of preparing ultra-fine tungsten powder by blue tungsten oxide hydrogen reduction method. And they mainly studied the effects of reduction temperature and heating rate on the particle size of tungsten powder. So, what effect does the reduction temperature and heating rate have on the particle size of tungsten…

Blue tungsten oxide powder may be used not only for the preparation of thermal insulating glass material, but also as a raw material for preparing ultrafine tungsten powder in the hydrogen reduction process. Some researchers have adopted blue tungsten oxide as a raw material to prepare ultrafine tungsten powder by hydrogen reduction. And they studied the effects of reduction temperature, loading capacity and hydrogen flow rate on the particle size of tungsten powder. First, prepare sample. The content of the…

Nano grain size blue tungsten oxide is a new type of nanomaterial that may be applied for producing heat-insulating glass window film. As you may have known, what we usually call blue tungsten oxide powder refers to agglomerates on the metallurgical definition. The agglomerates are the basic composition of the powder. Therefore, the study of the microstructure needs to start with the formation of the agglomerates. Firstly, the surface morphology of the powder, that is, the appearance of the agglomerate,…

Nano blue tungsten oxide is not only a new raw material for preparing heat-insulating glass window film, but also an important raw material for producing tungsten powder. As an important raw material for the preparation of tungsten powder, the performance of nano grain size blue tungsten oxide powder has been increasingly valued by manufacturers, and the concern for blue tungsten oxide has also extended from macroscopic properties to microstructure. At present, the main indicators reflecting the performance of nano particle…

Blue tungsten oxide powder, or WO2.92, may be used to produce heat-insulating glass window film and can be applied for the preparation of ultrafine tungsten powder. Some scholars have studied the main four phase transitions in the reduction process of blue tungsten oxide, namely, β-tungsten oxide→γ-tungsten oxide→tungsten dioxide→tungsten powder. The following mainly focuses on the reduction process from tungsten dioxide to tungsten powder. The morphology image of tungsten oxide in this process is as follows, wherein the left shows the…

Blue tungsten oxide powder for heat-insulating glass window film can be used to prepare tungsten powder. Some scholars have studied the main four phase transitions of blue tungsten oxide at the reduction temperature of 770°C~900°C. in other words, they study the processes: β-tungsten oxide → γ-tungsten oxide → tungsten dioxide → tungsten powder. The following mainly discusses the reduction process from γ-tungsten oxide to tungsten dioxide. The morphology image of tungsten oxide in this process is as follows, wherein the…

Blue tungsten oxide not only may be applied to produce heat-insulating glass window film for applying in buildings and automotives, but also can be used for the preparation of tungsten powder. Some researchers have focused on the four major phase transitions of blue tungsten oxide powder during the reduction process when the reduction temperature is 770°C~900°C: β-tungsten oxide (WO2.9) → γ-tungsten oxide (WO2.72) → tungsten dioxide (WO2)→tungsten powder. The following mainly discusses the reduction process from WO2.72 to WO2. From…

Blue nano tungsten oxide may be used to produce heat-insulating glass window film in a hydrogen reduction process. Some scholars have studied the reduction process of blue tungsten oxide to γ-tungsten oxide. It was found that as the blue tungsten oxide is reduced in hydrogen, the oxygen phase of the main phase component β-tungsten oxide in blue tungsten oxide decreases and the vacancy increases. The β-tungsten oxide is transformed into γ-tungsten oxide, and the surface roughness of the γ-tungsten oxide…