The hot corrosion behavior of titanium alloy and AlCuFeCr quasicrystalline coating on
titanium alloy in the presence of a solid mixture of NaCl and Na2SO4 deposit at 700°C was studied.
The result shows that weight-gain kinetics for titanium alloy exhibited a linear rate law, while the
kinetics of AlCuFeCr quasicrystalline coating displayed parabolic growth rate. The corrosion
resistance of the titanium alloy was improved by applying the AlCuFeCr quasicrystalline coating. The
corrosive oxide morphology formed on titanium alloy was porous. For AlCuFeCr quasicrystalline
coating with the mixture of NaCl and Na2SO4 deposit, the scale formed on the coating surface was
compact and uniform. Oxide formed on the surfaces of Al-Cu-Fe-Cr quasicrystalline coatings after
hot corrosion consisted of Al2O3.
The Corrosion Behavior of Pure Iron under Solid Na2SO4 Deposit in Wet Oxygen Flow at 500 °C
