In this research, the molten salt corrosion behavio r NiCrFeNbMoTiAl coating applied by plasma spray on alloy T22 (2 o Cr - 1Mo), when exposed to an etching agent of 80% V 2O5 - 20% Na 2SO 4 in a range temperature between 700°C to 900°C was evaluated. The corrosion rates were de termined by using the technique of linear polarization resistance. The re sults showed an increase in corrosion rate with increasing temperature .