Anodic Alumina

Anodic alumina properties

Alumina is one of the most widely utilized industrial ceramic materials. It offers superior electrical, thermal and chemical stability properties. Alumina can also be combined with other ceramics for engineered applications known as advanced or technical ceramics. These materials are custom designed to suit harsh applications requiring increased wear resistance, chemical or heat resistance, or other desirable qualities. Alumina is extracted from an ore known as bauxite and refined into various grades for further use. G-alumina grade alumina is one of the most widely utilized forms of alumina, due to its excellent surface area and pore parameters, and also serves as an engineered ceramic support material and refractory backing material. G-alumina production requires thermal dehydration of aluminium hydroxide precursors into sodium aluminate and water as end products.

G-alumina crystal structures consist of cubic close-packed oxygen layers with aluminium ions in their appropriate places, such as octahedral or tetrahedral sites. Alumina is amphoteric – this allows it to react with both acids and bases, helping it enhance performance in various applications; such as manufacturing low friction bearings with superior purity standards while being highly corrosion-resistant against aggressive environments. This characteristic makes g-alumina particularly suitable for manufacturing high purity bearings with improved low friction characteristics while offering good corrosion resistance when exposed to aggressive environments.

Other attributes that make alumina desirable include its insulating capabilities, strong tensile strength, high melting point and thermal shock resistance. Alumina also acts as an excellent electrical insulator and can withstand radiation as well as hydrofluoric acid attacks.

Anodic alumina stands out among other materials due to its impressive biomedical properties, with three times higher flexural and toughness properties than third-generation CeramTec pure alumina for orthopedic applications such as dental and medical implants.

Anodic alumina must be produced using a process that ensures precise control over its properties in order to meet the demands of orthopedic applications, which is why anodic alumina production occurs at test centers such as FEECO Innovation Center. Here, material can be tested at various stages including pelletizing (agglomeration), high temperature thermal processing and drying – so test data can then be utilized to create an anodic alumina product that performs exactly as expected.