2013年5月9日星期四

SPECIAL TUNGSTEN FORMS AIND QUALITIES - Globular Tungsten Powder - Coarse Tungsten Powder

Good flowing tungsten powder can be obtained by:
Reduction of W03 0r blue oxide at high temperature, high humidity, and alkali metal doping, and subsequent classification;
Disintegration and classification of presintered parts;
Fine tungsten powder +0.2% Ni is compacted and sintered at 1840 0C for 3 hours. Afterward, the Ni is dissolved by nitric acid.

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