You will find brief explanations on important technical terms from the area of high-temperature technology in our glossary.
Polycrystalline mullite/alumina wool (PCW) is made up of fibres composed of alumina (Al2O3) and silica (SiO2). The Al2O3 content is between 72% and 99%. At approx. 72% Al2O3 and approx. 28% SiO2, we speak of a mixed-oxide fibre. This is also called a mullite fibre or structure. The fibres are produced in a "sol-gel procedure". Polycrystalline mullite/alumina wool (PCW) is used at application temperatures above 1250°C and in applications that require a very high chemical resilience.