2022-11-23
2023-02-07The dense crystal graphite is also called block -like graphite. Such graphite crystals are obviously visible to the naked eye. The diameter of the particles is greater than 0.1 mm, which is concentrated in 0.1-1m/g than the surface area. This graphite is characterized by high quality. Generally, the carbon content is 60-65%, and sometimes 80-98%, but its plasticity and slipperyability are not as good as scales.
2023-02-07Graphite is a kind of homogenous alien body for carbon. It is gray -black, opaque solid, stable chemical properties, corrosion resistance, and it is not easy to react with drugs such as acid and alkali. Natural graphite comes from graphite ore. It can also be used as a raw material for oil coke, asphalt coke, etc., and made a series of processes to make a human -made graphite. Graphite is burned in oxygen to generate carbon dioxide, which can be oxidized by strong oxidant such as concentric acid and potassium permanganate. It can be used as an anti -wear agent and lubricant. High -purity graphite is used as a neutron decelerator in the atomic reactor. It can also be used to manufacture crickets, electrodes, brushes, dry batteries, graphite fibers, heat exchangers, coolers, arc furnaces, and arc
2023-02-06Graphite is soft, black and gray, with greasy feeling, which can pollute paper. The hardness is 1-2, and the hardness can be increased to 3 to 5 along the vertical direction.
2023-02-06The large and medium -sized graphite mines in the world are mainly distributed in China, India, Brazil, Czech Republic, Canada, Mexico and other countries
2023-02-06Graphite is a transitional crystal between atomic crystals, metal crystals and molecular crystals
2022-11-23Due to the special structure of the graphite mold. Therefore, in daily use, these special properties should also be understood by us.1. High temperature resistant type: the melting point of graphite is 3850+50°C, and the boiling point is 4250°C. Even in ultra-high temperature arc burning, the thermal expansion coefficient is very small, and the strength of graphite increases with the increase of temperature. At 2000°C , graphite strength increased - times;2. Lubricity: The lubricating performance of graphite depends on the size of the graphite flakes. The larger the flakes, the smaller the friction coefficient and the better the lubricating performance;3. Plasticity: Graphite has good toughness and can be made into very thin sheets;4. Chemical stability: Graphite has good chemical stability at room temperature, and is resistant to acid, alkali and organic solvents;5. Thermal shock resistance: When graphite is used at room temperature, it can withstand drastic changes in temperature wi
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