Abstract
Thermal cycling tests of ceramic-coated structural steel specimens with various thicknesses of bond coating and adhesive strength tests of thermal-cycled ones were carried out to investigate the effect of bond-coating thickness on thermal cycling life. Effects of thickness of ceramic coating and stablizing additives for zirconia ceramic coating were also investigated. The increase in thickness of bond coating prevented oxidation of substrate near the interface and improved failuer lives in thermal cycling tests. The residual adhesive strength of thermal cycled specimen had a good correlation with the oxidation of substrate: The residual adhesive strength was reduced with increasing in width of the oxidized region. No significant effects of stablizing additive and ceramic-coating thickness on failure characteristics was observed the range of the present study.
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