Influence of Third Component on Preparing Mullite Fibers

Mullite continuous fibers were prepared in Al2O3-SiO2 system by separately adding FeO, Na2O and MgO with a melt/drawing method. The forming mechanism of mullite was investigated by using SEM, XRD and SEM-EDS. The results show that the mullite fibers with a needle structure can be prepared from the method. This is a new approach of preparing mullite continuous fibers in industry which comes from producing glass fibers process with a crucible.