Crystal structure

Natural graphite: Crystal development is relatively complete, the graphization of scales graphite is more than 98%, and the graphitization degree of natural micro -crystal graphite is usually below 93%.

Artificial graphite: The degree of crystal development depends on raw materials and thermal treatment temperature. Generally speaking, the higher the thermal treatment temperature, the higher the graphite. The artificial graphite produced by industrial production is usually less than 90%.

Organizational structure

Natural scale graphite: It is a single crystal, which is simpler in the tissue structure. There are only shortcomings in crystalline learning (such as defects, wrong positions, errors, etc.). The grains of natural micro -crystal graphite are small, the clutter between the grains is arranged, and there is a hole after the removal of impurities, which shows the same sex in the macro.

Artificial Graphite: It can be regarded as a variety of materials, including graphite phase transformed by carbon particles such as petroleum coke or asphalt coke, graphite phase, particle accumulation or coal petteas adhesion of coal asphalt adhesives around the particles The pores formed after the aids were treated with heat.

Physical form

Natural graphite: It usually exists in the form of powder and can be used separately, but it is usually used after reunion with other materials.

Artificial graphite: There are many shapes, both powder, fiber and block, and the narrow artificial graphite is usually block shape. It needs to be processed into a certain shape when used.

Physical and chemical

In terms of physical and chemical properties, natural graphite and artificial graphite are both common and performance differences. For example, natural graphite and artificial graphite are good and electrical conductors, but for graphite powder of the same purity and granularity, the heat transfer performance and conductive performance of natural scales graphite are the best, natural micro -graphite, and artificial graphite. lowest. Graphite has good lubrication and certain plasticity. The crystal development of natural scales graphite is relatively complete, the friction coefficient is small, the most lubricated, and the highest plasticity is the second. Poor