Effect of Cristobalite on the Strength of Sintered Fused Silica Above and Below the Cristobalite Transformation

作者: Ryan C. Breneman , John W. Halloran

DOI: 10.1111/JACE.13505

关键词:

摘要: Porous fused silica ceramics which had been partially devitrified to cristobalite were stronger at 350°C in the beta-cristobalite stability range, but weaker 25°C after transformation alpha-cristobalite. The tensile strength distribution for different fractions are compared three types of specimens. These samples never transformed alpha-cristobalite; room-temperature with and retransformed prior alpha-cristobalite displayed 50%–75% tested on beta difference was dependent content. Specimens similar virgin Microcracking associated contributes changes cannot fully explain impact beta–alpha strength.

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