Porcelains are multiphase ceramics produced from natural raw materials. The microstructural development of these ceramics depends on their composition, on the characteristics of the raw materials, and on the ceramic processing. Due to the complexity of porcelains, several aspects of the microstructural evolution and its effects on the properties of porcelains are as yet little understood, despite the large number of reports published on the subject. Part I of this article is a literature review on aluminous porcelains, focusing on the effect of their compositions on their electrical and mechanical properties, as well as the influence of some additives on their microstructural development.
aluminous electrical porcelain; compositions; microstructure; properties
