In view of the M_n+1AX_n (MAX) phase coatings benefiting the adaptive passivation film for good corrosion resistance and high electronic density of states for excellent electrical conductivity, here, we reported the Cr₂AlC MAX phase coatings with different preferred orientations by a homemade technique consisting of vacuum arc and magnetron sputtering. The dependence of surface and interface microstructural evolution upon the corrosion and electrochemical properties of deposited coating was focused. Results showed that all the Cr₂AlC coatings with different phase orientations greatly improved the performance of stainless steel (SS) 316 L substrate. Specifically, the lowest value of interface contact resistance (ICR) reached to 3.16 mΩ cm² and the lowest corrosion current density was 2 × 10⁻² μA cm⁻², which were much better than those of bare SS316L. The combined studies of electrochemical properties and theoretical calculations demonstrated that the Cr₂AlC coatings with preferred (103) orientation were easier to form oxide passivation film on their surface to increase the corrosion resistance.

鉴于_{Mn +1} AX _n (MAX) 相涂层有利于自适应钝化膜的良好耐腐蚀性和高电子态密度以获得优异的导电性，在此，我们报道了具有不同优选取向的 Cr ₂ AlC MAX 相涂层通过由真空电弧和磁控溅射组成的自制技术。关注表面和界面微观结构演变对沉积涂层的腐蚀和电化学性能的依赖性。结果表明，所有的 Cr ₂具有不同相取向的 AlC 涂层大大提高了不锈钢 (SS) 316 L 基材的性能。具体而言，界面接触电阻（ICR）的最低值达到3.16 mΩ cm ²，腐蚀电流密度最低为2 × 10 ^-2 μA cm ^-2，远优于裸SS316L。电化学性能和理论计算的结合研究表明，具有优选(103)取向的Cr ₂ AlC涂层更容易在其表面形成氧化物钝化膜以增加耐腐蚀性。