Fig. 3: Cross-sectional morphologies of YSZ/ PEO/ Mg and YSZ/ Mg samples after cyclical oxidation at 200 °C for 100 h.
From: Enhanced high-temperature oxidation resistance of Mg-Gd-Zn-Zr alloy by YSZ TBC with PEO bond layer

a Cross-sectional morphology of YSZ/ PEO/ Mg sample. b The high magnification morphology of (a). c Cross-sectional morphology of YSZ/ Mg sample. d The high magnification morphology of (c).