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natural flake graphite powder is a type of graphite which can be found in deposits across the globe. Known for its dry lubricating properties, this natural carbon-based material is also used as an additive in polymer to improve thermal stability and conductivity without otherwise compromising the compound’s chemical composition.
Graphite is a naturally occurring mineral that comes in different forms, depending on where it’s sourced and how it’s processed. Crystalline vein graphite – which is the type of graphite that’s commonly used in carbon brushes, pencils and other specialized applications – is formed from carbon atoms condensed into crystalline structures resembling needles or flakes. This macro morphology lends to high strength and stiffness, which makes it ideal for many applications.
A unique characteristic of crystalline vein graphite is its oxidation resistance, which is directly related to the size and purity of the flakes. Research has shown that oxidation only occurs at the edges of the flakes or where impurities are located. Pioneer’s natural graphite possesses both larger and purer flakes, which leads to exceptional resistance to oxidation.
This naturally crystalline flake graphite has other useful properties as well, such as self-lubrication and plasticity in high temperatures, as well as good electrical conductivity and adhesion. It’s often used as a coating to protect metal surfaces from corrosion, which is why it’s prized in zinc-carbon batteries and electric motor brushes. Graphite is also an important ingredient in the anodes of lithium-ion batteries, due to its conductive traits and other desirable characteristics.