Properties of Silica Ceramic Made from Amorphous Silica
The mixture of amorphous silica extracted from coal fly ash and fused silica was used to prepare density silica ceramic through slip-casting method. The XRD results showed that a large amount of cristobalite was formed at 1300°C which can weaken mechanical properties. The SEM results showed that glassy phase present from fused silica promoted ceramic densification. According to the experiment results, it was found that the bending strength was highest when mixing 65wt% fused silica and sintering at 1200°C for 4 hours.
Wei Pan and Jianghong Gong
C. F. Wang et al., "Properties of Silica Ceramic Made from Amorphous Silica ", Key Engineering Materials, Vols. 434-435, pp. 838-839, 2010