Violet Tungsten Oxide by Colorimetry Method

There are four general tungsten oxides, yellow tungsten oxide, blue tungsten oxide, brown tungsten oxide and violet tungsten oxide. Among them, the violet tungsten oxide formed by the needle-like shape is the most special. Violet tungsten oxide is one of the most widely used raw materials in the production of tungsten powder. It is very important to identify the quality of violet tungsten oxide.

The traditional violet tungsten oxide is mainly used for detecting the oxygen index, specific surface area and false specific gravity of violet tungsten oxide, or the identification of the quality of violet tungsten oxide by the method of phase composition and scanning electron microscopy.

Violet tungsten oxide colorimetric identification is a unique use of violet tungsten oxide color, the standard will be made of several types of violet tungsten oxide, by reference to its color to determine the quality of violet tungsten oxide, so as to achieve control Violet tungsten oxide production process of the steady state. The principle of colorimetric identification is based on the fact that the color of violet tungsten oxide is related to its oxygen index, the tightness of the particles, and the aspect ratio of the needles. The violet color of tungsten oxide, if it is violet, indicates a higher oxygen index, the shape of the structure is slightly longer; if the violet tungsten oxide is violet in color, the acicular structure is a little shorter and thicker.

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