The color of fine particle tungsten powder is light grey or dark grey, uniform appearance, high quality and the characteristics of high purity tungsten content is above 99.95%, impurity content, granularity and there will not be a coarse or fine phenomenon, is mainly used as raw material for tungsten contact, high gravity tungsten alloy and tungsten bar.
Fine particle?tungsten powder is greater than surface area, high chemical activity, on the surface of the powder particles under the effect of moisture in the furnace, the role of oxygen and water vapor in the air, the surface is easily oxidized, generated a thin layer of tungsten oxide, carbon dioxide gas can be used for tungsten powder surface passivation treatment.
It is very important to the packaging of fine tungsten powder to protect. Generally, it can be protected by vacuum protection and inert gas.
More details, please visit:
http://www.tungsten-powder.com/chinese/fine_tungsten_powder.html
