| Properties of thermal barrier coating (TBC) prepared from
dispersed Y -PSZ in a high temperature resistant aluminoborosilicate
glassy phase in the system, RC-RO-Si01-
Al103 (R = Ca, Mg, Ba & R = Na, K) have been studied. A
coating composition by simple and cost effective vitreous
enamelling technique has been applied on a stainless steel.
substrate (AISI-310) and the results of characterisations,
microstructures and propertieS of 3 wt% Y-PSZ dispersed
in glass) matrix are reported in this paper.
The results indicate that the thermal gradient of a
TBC, having thickness of 750-800 microns, is in the range
of 175°-l80°C when the coated surface is exposed to a
temperature of 1000°C for half an hour. But a significant
improvement of the gradient, viz. 650°-675°C is observed
even with a long expo>sure of the coated surface to a
temperature of 1000°C when a cooling system made by
continuous now of compressed air is applied. |
