随着煤炭综采技术的发展，对高耐蚀性材料的开发提出了迫切要求。 为了明晰影响缸筒材料耐蚀性的主要 因素，采用电化学腐蚀方法研究了液压支架缸筒材料 A 和材料 B 的耐蚀性能，结合合金成分、夹杂物组成、微观组织和腐蚀后形貌，分析了影响材料 B 耐蚀性能的关键因素。 结果表明，材料 A 的电化学性能优于材料 B，电化学腐蚀后材料B 表面出现了大量的“麻点”，是点蚀形成的主要位置。 且材料 B 中 C、Cr、Nb 等元素的添加起到了固溶强化和细晶强化 的作用， 共同提高了材料 B 的力学性能， 冶炼过程中引入的 Ca、S 等元素在基体中形成了高密度的 CaS-Aloxide-MnS复合夹杂，恶化了材料的耐蚀性能。

With the development of comprehensive coal mining technology, the development and research of high corrosion-resistance materials are urgently needed. To clarify the main factors affecting the corrosion resistance of cylinder barrel materials, an electrochemical corrosion method was used to study the corrosion resistance of hydraulic bracket cylinder barrel material A and B, combined with the alloy composition, inclusion composition, microstructure and postcorrosion morphology to analyse the key factors affecting the corrosion resistance of material B. The results show that the electrochemical performance of material A is better than that of domestic material B, and a large number of“pockmarks” appear on the surface of material B after electrochemical corrosion. The mechanical properties of the material are improved as a result of the addition of C, Cr and Nb in material B together with grain refinement. However, high-density CaS-Aloxide-MnS composite inclusions are formed in the matrix due to the introduction of Ca and S during the smelting process, which deteriorates the corrosion resistance of the material.