Study of microcracking in illite-based ceramics during firing

Mechanical properties of illite‐based ceramics with controlled porosity studied by modern in situ techniques

“…Kaolinite and illite are the major mineral components of natural clays due to their relatively high thermal and chemical stability at ambient conditions. These clays are typically used for the production of traditional ceramic products . Traditional ceramics have been utilized as structural materials for centuries.…”

“…Therefore, it allows to study the properties of illite in a relatively pure form, devoid of the influence of other phases such as kaolinite, quartz, and feldspars, which are typically present in natural clays in considerably high quantities. There are only a limited number of works investigating this material and these studies focus primarily on the thermo‐physical properties of illite …”

“…. The AE technique has also been successfully employed for the examination of microcracking, which takes place during thermal loading of ceramic materials, primarily as a result of various phase transformations …”

“…The AE technique has also been successfully employed for the examination of microcracking, which takes place during thermal loading of ceramic materials, primarily as a result of various phase transformations. 2,19,33,34 The main objective of this work was, therefore, twofold. First, as there is an absence of related investigations, we aim to contribute to the understanding of deformation behavior of illite-based ceramic materials and of the effect of controlled porosity on its mechanical parameters.…”

“…There are only a limited number of works investigating this material and these studies focus primarily on the thermo-physical properties of illite. 2,15,16,[18][19][20][21][22][23][24][25][26][27][28] Moreover in this work, a controlled porosity was introduced into IRC using a sacrificial template method, thus obtaining sample sets with various degrees of porosity. Mechanical properties of IRC and their dependence on the level of porosity were investigated using conventional compression tests combined with modern in situ acoustic emission (AE) and digital image correlation (DIC) techniques, which proved to be particularly effective for the examination of deformation dynamics, investigated up to now mostly in porous or dense metallic and composite materials, see Refs.…”