Abstract
This study sought to investigate the effect of substrate type on the radiation resistance of zirconium carbide (ZrC) coatings as a candidate for plasma facing materials. The first step involved growing ZrC coatings on tungsten carbide (WC) and glass substrates using homemade DC Magnetron Sputtering. The different ZrC coated substrates were then irradiated with 2 MeV He ions to a fluence of 7×1015 ions/cm2 using a 3 MV Van de Graaff accelerator. The surface morphologies of the coatings were examined before and after irradiation by Field Emission Scanning Electron Microscopy (FESEM). Additionally, X-Ray Diffraction and Raman spectroscopy were used to evaluate the microstructure evolution of the coatings. Displacement damage and He ion concentration in the coatings were evaluated by SRIM simulation. A comparison of different substrate types coated with ZrC revealed that ZrC coating on tungsten carbide substrates have higher irradiation resistance than ZrC coating on glass substrates.
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