Ultrafine purple tungsten oxide has a unique fine needle-like crystal form, and its aggregates are like loose sponges. This structure has large voids and low bulk density. Compared with yellow tungsten oxide (yellow tungsten) and blue tungsten oxide (blue tungsten), the bulk density of purple tungsten oxide (purple tungsten) is much smaller than that of yellow tungsten and blue tungsten, the BET specific surface is the smallest, and the chemical activity is the largest. , tungsten powder is produced at the fastest rate, with the finest particle size and a fairly stable particle size distribution during hydrogen reduction.
The tungsten powder produced by the hydrogen reduction of violet tungsten is fine and uniform and has good dispersion among the particles, so it is suitable for the production of ultrafine-grained cemented carbide. The tungsten powder and tungsten carbide powder made from violet tungsten have the characteristics of being fine and uniform and not easy to grow.
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