Preparation and Characterization of Fused Silica Micro-Powders and Ceramics
Fused silica micro-powders with D50 of 1.8μm were firstly prepared by ball milling. Effects of milling time on particle size distribution and microstructures of the powders were discussed. Then, the green compacts with volume density of 1.86g/cm3 was obtained by slip casting with lactic acid as dispersant. Effects of lactic acid content on apparent viscosity of the slurry, thickness and density of the green compacts were investigated. Finally, fused silica ceramics with thermal expansion coefficient of 0.56∙10-6/°C, bending strength of 64MPa and volume density of 1.94g/cm3 were prepared.
Cheng Zhang and Jin Hu
J. Y. Niu et al., "Preparation and Characterization of Fused Silica Micro-Powders and Ceramics", Advanced Materials Research, Vol. 412, pp. 129-132, 2012