The types of fractures in a whiteware body containing quartz vary as a function of quartz grain size. The transition from one type of fracture to another is illustrated by strength, thermal expansion, and water absorption, as well as microstructural observations. The thermal expansion behavior of compositions containing alumina does not vary as a function of grain size, thus showing the absence of fracture in white‐ware bodies containing alumina.
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Warshaw et al. (1967) studied this question.