In porcelain bodies, during heat treatment, the major component kaolinite ((Al 2Si 2O 5)-(OH) 4) transforms to metakaolinite at 550˚C - 600˚C, which is a dehydrated metastable amorphous structure. Porcelain is an aesthetic product and generally white, semi-transparent, waterproof, resistant to strong bases and abrasives. It is a very compact, vitrified product with low porosity. Porcelain is a ceramic product formulated from a mixture of three materials: clay and kaolin quartz feldspar. In this present work, we study the impact of powder contents of different raw materials used in production of porcelain. In addition to chemical nature of compound, it is microstructure of material (size, grain shape, rate and types of porosity, phase distribution) that controls their properties. But can also be observed millimetric crystal agglomerates with a very porous microstructure or fine-grained polycrystals (<10 microns) without vitreous phases and very low porosity. Most ceramics are multiphase materials that contain both crystalline phases and vitreous phases.
