2003 Volume 44 Issue 5 Pages 962-967
Glass lining and CVD (chemical vapor deposition) YSZ (yttria stabilized zirconia) coating were applied to improve the corrosion resistance of Hastelloy-XR alloy in an Ar–SO2 atmosphere (PSO2=10 kPa). A glass lining with the composition of 48 SiO2–8 B2O3–6 Al2O3–11 CaO–25 BaO–2 ZnO (mass%) which protected the alloy substrate showed almost no crystallization and mass change below 1073 K, but suffered degradation at temperatures over 1173 K. The YSZ (8 mol% Y2O3) coating had a well-grown columnar structure and showed excellent corrosion resistance at 1273 K.