The impact of thermal fatigue and carbidization on the W coatings deposited on CFC tiles for the ITER-like Wall project at JET

► Degradation curves of the W coatings depend on temperature and number of pulses. ► Thermo-mechanical properties of the W coatings are associated with degradation curves. ► Thermal fatigue and carbidization affect the interface between CFC and W. ► A pore structure was detected at the interface by SEM examination.