A Study on Thermal Shock Characteristics of Functionally Gradient Ceramic/Metal Composites

Title & Authors
A Study on Thermal Shock Characteristics of Functionally Gradient Ceramic/Metal Composites
Song, Jun-Hee; Lim, Jae-Kyoo;

Abstract
This study was carried out to anlayze the heat-resistant characteristics of functionally gradient material(FGM) composed with ceramic and metal. The thermal fracture behavior of plasma-sprayed FGM and conventional coating material(NFGM) was exaimined by acoustic emession technique under heating and cooling. Furnace cooling and rapid cooling tests were used to examine the effect of temperature change under various conditions, respectively. At the high temperature above $\small{800^{\circ}C}$, it was shown that FGM gives higher thermal resistance compared to NFGM by AE signal and fracture surface analysis.
Keywords
Functionally Gradient Material;Thermal Shock;Acoustic Emission;Thermal Barrier Coating;Delamination;Vertical Crack;
Language
Korean
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