Aluminum titanate

CAS no. : 12004-39-6
EINECS no. : 234-456-9
Molecular formula: Al2TiO5
Molecular weight: 181.8271
Melting point: 1860 ℃

Aluminum titanate ceramics belong to the rhombic system of quasi – plate – titanium – type crystallization. The average coefficient of thermal expansion is 9.5E-6/℃, which is a famous material with low coefficient of thermal expansion. Aluminum titanate can be used at a high temperature (1460℃) and is well adapted to the oxidation problem at high temperature. Therefore, it has a broad application prospect. However, it is easy to crack when calcined at high temperature and its mechanical strength is poor. Aluminum titanate is easily decomposed into oxide when heated at 800℃-1300℃, and decompose violently at 1100℃. To this end, various additives are usually added, the ratio of raw materials is adjusted, and calcination conditions are controlled to improve the above shortcomings. The finished products are used to meet the requirements of heat resistance and heat shock resistance. Aluminum titanate is a new kind of material with low thermal expansion coefficient and high melting point. Its melting point is high (1860±10℃), thermal expansion coefficient is small (<1.5×10℃), and even can appear negative expansion. It is one of the low-expansion materials with excellent high temperature resistance.

The product application
Aluminium titanate was mainly by the ionic bond and covalent bond as a combination of keys, from the microscopic structure and the state point of view, internal crystal phase and porosity, which determines the aluminum titanate with metal materials and polymer materials do not have low thermal conductivity, slag resistance, alkali resistance, corrosion resistance, for a variety of metal and glass has the advantages of no infiltration, so in wear resistance, high temperature resistant, alkali resistant, corrosion condition such as harsh environment with a wide range of applications, especially for the occasion of high thermal shock.
Aluminum titanate is widely used in nonferrous metals, iron and steel, automobile, military industry, chemical industry, medicine, etc. It is often used in metal cutting tools, molds, engine parts, cylinder lining, exhaust pipe, cylinder head exhaust duct, turbocharger turbo housing, turbine blade, turbine rotor and various kinds of thermal insulation materials.