Mullitehiukkaset

Mullitehiukkaset refers to particles composed of mullite, a ceramic material with the general chemical formula 3Al2O3·2SiO2, although variations in composition exist. Mullite is known for its excellent thermal stability, high strength, low thermal expansion, and good chemical resistance. These properties make mullite particles valuable in various industrial applications.

Mullite particles are typically produced through high-temperature sintering of mixtures containing alumina and silica, or from naturally occurring minerals that transform into mullite upon heating. The size and morphology of these particles can be controlled during the manufacturing process, influencing their performance in different applications. Fine mullite powders are often used as fillers or reinforcing agents.

In industry, mullite particles find use in the production of refractory materials, such as bricks, castables, and coatings, where their high melting point and resistance to thermal shock are crucial. They are also incorporated into high-performance ceramics, composites, and abrasives. Their low coefficient of thermal expansion helps to reduce stress and cracking in ceramic bodies at elevated temperatures. Furthermore, mullite particles can be employed in filtration media and as components in advanced electronic substrates due to their dielectric properties and thermal stability.