The optical techniques shown in this work allow the characterization of ceramic bodies from different points of view. The measurement of thermo-mechanical properties is performed without any contact, so the sample is completely free from constraints. …
Generally, the deformations of ceramic materials during and after firing may have a complex origin. If the products are made up of a single material, such deformations are mainly due to pyroplastic phenomena. In the case of multi-layer materials …
The porcelain glaze is a borosilicate glass coating, which is usually applied and then melted on metallic surfaces, i.e. cast iron, steel, aluminium blends. The complex system made by the metal and its porcelain glaze is generated during firing and …
A new possibility for measurements of glass transition point, fictive temperature and activation energy of viscous flow in the glass transition range is shown by using a contactless horizontal optical dilatometer and pressed powder samples. The …
Traditional sintered ceramic bodies, like stoneware or porcelain-ware, undergo a viscous flow sintering process, where the driving force is mainly given by the surface tension of the liquid glassy phase, and the speed of the process is controlled by …
In this paper, the effects of grains morphology on sintering behaviour and final microstructure of a porcelain tile body were studied by means of optical dilatometry, heating microscopy and SEM investigations. Two samples made up of the same …
Heating microscopes were commercially introduced 60 years ago, and they immediately gained an important role in material science and engineering thanks to their wide field of application [1]. Nowadays, these instruments are used in both industry and …
Mold powders, initially fly ash based, were introduced about 40 years ago in the steel continuous casting process. Nowadays, also synthetic powders consisting of mixtures of various minerals are used. The aims of the powders, when added to the free …
The optical measurement of thermo-mechanical properties allows the sample to be completely free from constraints. This enables the possibility to measure the true change in size or volume of a material during a sintering process. Thanks to the fact …
The study of the behaviour and properties of ceramic materials during the heating process represents one of the most critical steps in the development of innovative products, both in the field of advanced and traditional ceramics.