LOWEXPANSION FELDSPATHIC PORCELAIN AND ITS PREPARATION

摘要

PROBLEM TO BE SOLVED: To prepare a low expansion feldspathic porcelain usable in combina tion with a metal or porcelain having a low coefft. of thermal expansion. SOLUTION: A feldspathic porcelain compsn. consisting of a continuous glassy matrix phase and a discontinuous crystal phase contg. uniformly dispersed cubic leucite stabilized with at least one among Cs, Ca, Sr, Ba and Tl and having about 800-1,200 deg.C melting temp. is used.