The paper considers several approaches to protect martensitic steels with ultrafine-grained (UFG) structure in aggressive environments. Scanning electron microscopy was used to study the microstructure and composition of steel substrates and coatings. The samples were also subjected to corrosion tests. Regularities of corrosion behavior were specified for UFG steels. The samples were subjected to ion nitriding in a glow discharge and deposition of protective Ti-Al/TiAlN coatings in a vacuum arc discharge plasma. Adhesion of the coatings was examined with CSM ScratchTEST. Critical load at which microcracks are formed in the coatings was defined for samples with different structures. Corrosion rates were identified for different treatment regimes.

本文考虑了几种在侵蚀性环境中保护具有超细晶粒（UFG）结构的马氏体钢的方法。扫描电子显微镜用于研究钢基底和涂层的微观结构和组成。样品也经受腐蚀测试。规定了UFG钢的腐蚀行为规律。在辉光放电中对样品进行离子氮化，并在真空电弧放电等离子体中沉积保护性Ti-Al / TiAlN涂层。用CSM ScratchTEST检查涂层的粘附性。对于具有不同结构的样品，定义了在涂层中形成微裂纹的临界载荷。确定了不同处理方案的腐蚀速率。