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aluminum carbide is an abrasive material, used in cutting tools. It can be made by heating a mixture of carbon, aluminum, nitrogen, and sulfur at temperatures above 1000 degC.
Known by its chemical formula Al4C3, it is a yellow-green odorless powder with a hexagonal crystal structure. It can be hydrolyzed by water, forming alkali metal hydride and methane.
The crystalline phase is stable up to 1400 degC. It can be produced by combining a mixture of carbon, aluminum, nitrogen, sulfur, and phosphorus at high temperatures.
It is useful as a reducing agent in organic synthesis and for electroplating of aluminum alloys, especially for making lithium aluminum hydride (LiAlH4). It can also act as a hydrogen carrier in electrochemical applications.
Al4C3 can be produced by mixing a mixture of elements at high temperatures, and the resultant carbide is easily hydrolyzed by water to form alkali metal hydride and methane. The resulting salt-like compound can then be further diluted in acid to prepare aluminum nitride (AlN) and/or phosphide (AlP).
Aluminum dross can be stabilized by hydrolysis of desulfurization slag from steelmaking plants or by a sodium solution. It can be used as a raw material in the production of cement and concrete blocks. It is also used to make aluminum alloys by rheocasting and by melting the dross into molten metal. The resulting aluminum alloys are then further analyzed and refined to their desired properties.