| Ceramography is the art and science of preparation, examination and evaluation of ceramic microstructures. Ceramography can be thought of as the metallography of ceramics. The microstructure is the structure level of approximately 0.1 to 100 µm, between the minimum wavelength of visible light and the resolution limit of the naked eye. The microstructure includes most grains, secondary phases, grain boundaries, pores, micro-cracks and hardness microindentions. Most bulk mechanical, optical, thermal, electrical and magnetic properties are significantly affected by the microstructure. The fabrication method and process conditions are generally indicated by the microstructure. The root cause of many ceramic failures is evident in the microstructure. Ceramography is part of the broader field of materialography, which includes all the microscopic techniques of material analysis, such as metallography, petrography and plastography. Ceramography is usually reserved for high-performance ceramics for industrial applications, such as 85–99.9% alumina (Al2O3) in Fig. 1, zirconia (ZrO2), silicon carbide (SiC), silicon nitride (Si3N4), and ceramic-matrix composites. It is seldom used on whiteware ceramics such as sanitaryware, wall tiles and dishware. ([[https://en.wikipedia.org/wiki/Ceramography|source]]) | Cerate, historically simple cerate, (from Latin cera "wax") is an unctuous preparation for external application, of a consistency intermediate between that of an ointment and a plaster. It can be spread upon cloth without the use of heat, but does not melt when applied to the skin. |
| {{scribblenauts-unlimited:c:ceramography.jpg}} | Cerate consists essentially of wax (for which resin, lead acetate or spermaceti is sometimes substituted) mixed with oil, lard, and various medicinal ingredients. The cerate of the United States Pharmacopoeia is a mixture of three parts of paraffin and seven parts of lard. ([[https://en.wikipedia.org/wiki/Cerate|source]]) |
