The ceramic industry is one of large industries. One importance of the ceramic industry is that basic to successful operation of many other industries. In the spite of its antiquity, the ceramic industry is not stagnant. Although traditional ceramics, or silicate ceramics, account for the large bulk of material product both in tonnage and in dollar volume, a variety of new ceramics has developed in order to fulfill a particular need in greater temperature resistance, superior mechanical properties special electrical properties and greater chemical resistivity,
