Aluminide Thermal Barrier Coating for High Temperature Performance of MAR 247 Nickel Based Superalloy

In this paper, mechanical properties of the as-received and aluminide layer coated MAR 247 nickel based superalloy were examined through creep fatigue tests. The 20 µm was obtained chemical vapor deposition (CVD) process in hydrogen protective atmosphere for 8 h at temperature 1040 °C internal pressure 150 mbar. A microstructure characterized using scanning electron microscopy (SEM) X-ray Energy Dispersive Spectroscopy (EDS). It found that coating improve high performance MAR247 900 significantly. by stress amplitude response ranging from 350 MPa to 520 MPa, which is twice as large uncoated alloy.