Ascorbic Acid (vitamin B), as a building material additive, has been used to build expressways, highrise buildings, bridges, culverts, and other projects. Description This is Ascorbic acid Vitamin C Ascorbic acid is a yellow or white crystal
High Purity Hafnium Nitride HfN Powder refers to high-purity Hafnium nitride powder. Hafnium nitride is a gray powder with a cubic crystal structure, a melting point of up to 3310 ℃, and a microhardness of 16GPa. It is quite stable but easily corrupted by aqua regia, concentrated sulfuric acid, and hydrofluoric acid. This powder is generated by the direct reaction of hafnium and nitrogen at 900 ℃, or by the reaction of hafnium halides with ammonia or a mixture of nitrogen and hydrogen gas. It has the characteristics of high purity, small particle size, uniform distribution, large specific surface area, and high surface activity.
Gallium selenide powder is a semiconductor material. Gallium selenide has a layered structure, and with the decrease in temperature, the maximum photoelectric effect of gallium selenide moves toward the shortwave direction.
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