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利用电弧离子镀设备,在45#钢基体上制备了两种调制比的Cr/CrN多层膜。采用X射线衍射技术(XRD)、扫描电子显微镜(SEM)、电子探针(EPMA)、M273A电化学系统等技术分析了薄膜的相结构、表面形貌、横截面元素分布、模拟海水中的抗腐蚀性能。结果表明:膜层主要由CrN、Cr2N和Cr组成,以Cr2N(111)为择优取向;膜层为Cr层-过渡层-CrN层的“三明治”调制结构;Cr/CrN多层膜结构与中间Cr层的存在可以显著提高基体和单层CrN抗腐蚀性能,45#钢+Cr/CrN(5/10)的防护体系抗腐蚀性能最佳。
Using arc ion plating equipment, two kinds of Cr / CrN multilayers with different modulation ratios were prepared on 45 # steel substrate. The phase structure, surface morphology and cross-section element distribution of the films were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron probe (EPMA) and M273A electrochemical system. Corrosion performance. The results show that the film is mainly composed of CrN, Cr2N and Cr, with Cr2N (111) as the preferred orientation; the film is the “sandwich” structure of Cr layer - transition layer - CrN layer; the Cr / CrN multilayer structure The presence of intermediate Cr layer can significantly improve the corrosion resistance of matrix and single layer CrN. The corrosion resistance of 45 # steel + Cr / CrN (5/10) is the best.