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Highly transparent silica glass was prepared from mesoporous silica SBA ‐15 powders at low temperature using Spark Plasma Sintering. It was found that the combined effect of pressure and temperature resulted in collapse of porous structure of SBA ‐15 and transformation to transparent glass. A sinterability enhancement mechanism involving generation of incremental surface area from pore collapse during sintering process was proposed to interpret the fully densification at low temperature.
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Zhang et al. (2015) studied this question.
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