Patent ID: 6498116
Filing Date: 2002-12-24
Classification: C03C,C04B,H01L

Abstract:
A coating material for localized thermal processing of glazed ceramics and other brittle and low thermal conductivity materials, the coating material is made from a composition consisting essentially in mole percent of 3.3-5.0% Al2O3, 3.6-47.4% B2O3, 0-0.11% CaO, 0-0.11% Fe2O3, 0-8.0% K2O, 0-38.0% Li2O, 0-11.1% LiNO3, 0-10.0% Na2O, 1.1-45.0% PbO, 2.0-86.5% SiO2, 0-30.0% SnO2, 0-38.0% ZnO, and as a low CTE material 0-7.0% ZrW2O8, the coating material exhibiting a coefficient of thermal expansion of less than about 8Ã—10âˆ’6/Â° C. and glass transition temperature of less than about 400Â° C.