“…So far, many methods have been used to prepare ZrN coatings, including magnetron sputtering [14,15], vacuum-arc deposition system [5], hollow cathode ion plating technology (HCD-IP) [16,17], ion beam sputtering [18][19][20] and so on. The previous studies have shown that the partial pressure of N 2 , substrate bias, deposition temperature and doped element can significantly affect the bonding strength between coating and matrix [21], the texture of ZrN coating [22], microstructure, density [23][24][25][26] and its mechanical properties, corrosion resistance, and oxidation resistance [27]. Of course, the preparation of the ZrNmodified layer by nitriding on the surface of the zirconium alloy has also been studied, including high-energy nitrogen ion implantation [25,[28][29][30][31] and plasma nitriding [32][33][34].…”