Blue Tungsten Oxide Microstructure Analysis

Blue tungsten oxide as an important raw material for the producing tungsten powder, its performance has been more attention. The people attention switch to microstructure of blue tungsten oxide from macroscopic properties. The main indicators of bule tungsten oxide performance not only the physical properties such as the impurity content, particle size, liquidity, specific surface area., the microstructure of tungsten blue also have some influence on the performance of blue tungsten oxide.

By scanning electron microscopy to observe the surface morphology of blue tungsten oxide powder, it found blue tungsten oxide polymerization by lots of particle and there are many irregular cracks on the powder. Using HRTEM observed that many gaps between the grains of blue tungsten oxide, so blue tungsten oxide particles are porous. These cracks and voids in favor of accelerating the reaction rare of blue tungsten oxide hydrogen reaction and excluding water. Blue tungsten powder was found by TEM which it has cubic crystal blue tungsten oxide, as well as needles purple tungsten oxide grain. We can see in the blue tungsten powder not only including blue tungsten oxide particle as well as some component of violet tungsten oxide, and this phenomenon is present in most blue tungsten. This shows that in the producing technology of blue tungsten oxide need more improve.

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