... of mullite most notably at a lower temperature using X-ray diffraction (XRD). Also, an objective of this work is to focus on a low-temperature fabrication route for the production of mullite powders. Design/methodology/approach A batch composition of kaolin, alumina and silica was manually pre-milled...

... the temperature from 720°C to 1450°C, the Al₂O₃ in the composites tends to turn into crystal structure from the original amorphous form. On the other hand, with an O₂ atmosphere, the white ash and aluminum system would evolve to mullite or mullite/alumina composites, depending...