The innovation ceramic today is not the ceramic in the past. The innovation ceramic, which is manufactured in a different way from the traditional technique, has more functions and performances such as high temperature resistance, corrosion resistance and various sensitive characteristics. The most crucial difference between the new ceramic and the traditional ceramic is that chemical component, macro-structure and characteristics. The new kind of ceramic is also called “advanced ceramic”, “high-performance ceramic”, “high-tech ceramic”, “fine ceramic”,” special ceramic” as well as “industrial ceramic” called in Chinese market.
Being a kind of inorganic non-metal material with special characteristic, the new ceramic made of man-made inorganic powder. It is produced in a way of structure design, precise stoichiometry, proper moldings and special processing as well as sintering to meet the required precision.
 The new ceramic is classified into two, the structural ceramic and the functional ceramic. The ceramic with mechanical function, heat function or partial chemical function is classified to structural ceramic, while the ceramic with electrical, light, magnetic chemical, organic characteristic and with interchanging function is called functional ceramic. However, it is hard to classify the ceramic very accurately because the new ceramic always has not only one function.
The functional ceramic has not only the performance of insulation, semi-conduction, conductivity, piezoelectricity, ferroelectricity, magnetic, corrosion-resistance, chemisorption, organic adaptability, sound absorption, radiation-resistance, but also the function of interchanging