Tungsten carbide needles have excellent oxidation resistance and can be used for a long time under high temperature and pressure without being easily damaged by oxidation. The tungsten and other alloying elements contained in tungsten carbide needles can form a dense oxide layer to prevent oxygen molecules from further penetrating into the interior of tungsten carbide needles, thereby improving the oxidation resistance of tungsten carbide needles. In addition, the high melting point and high hardness of tungsten carbide needles also contribute to its stability and durability in high temperature and high pressure environments.
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