If you are looking for high-quality products, please feel free to contact us and send an inquiry, email: brad@ihpa.net
aluminium oxide neutral is an inorganic compound with the formula Al2O3. It occurs naturally as various crystalline minerals, including bauxite, corundum and diaspore. It is an amphoteric substance, able to react as an acid with a base and as a base with an acid. It is a refractory material and is used in the manufacture of aluminium-based ceramics, such as alumina. It is also a raw material for the production of aluminium (Hall–Heroult process), and is a common filler for plastics. It is also a lubricant and the abrasive of choice for cutting operations, such as cutoff tools. It is also used in chemistry as a medium for column chromatography.
Aluminium oxide is responsible for the resistance of metallic aluminium to weathering. In contact with atmospheric oxygen, it rapidly forms a thin passivation layer (Al2O3) on the surface of exposed aluminium, which prevents further oxidation. The thickness and properties of this layer can be enhanced, enabling aluminium to be made corrosion resistant, in a process called anodising. The aluminium oxide generated is amorphous, but discharge assisted oxidation processes such as plasma electrolytic oxidation can generate significant quantities of crystalline aluminium oxide.
Other uses of aluminium oxide include the production of alumina nanofibers, used in dental refractory materials and optical fibres; as a polishing agent for glass and ceramics, and as an ingredient in some sunscreens. It is also a component, along with silica, in the cue tip "chalk" used in billiards.
