ABSTRACT In order to prolong the service life of the water-cooled wall used in boilers of paper mills, explosive welded composite steel pipes are mostly used due to their excellent alkali corrosion resistance, but its technical requirements and costs are relatively high. In this paper, FSAN38 powder modelled on Sanicro38 composition and 310s stainless steel + WC powders is utilized to prepare a composite metal layer on 1020G surface by plasma cladding technology. Electrochemical corrosion and molten alkali corrosion experiments were carried out, then the microstructure and composition of the cladding layer were observed. Compared with explosion welded composite steel plate Sanicro38, it is found that the 310s+10%WC surfacing layer has the best alkali corrosion resistance, its electrochemical corrosion rate is 0.038184 mm a−1, and the corrosion rate in molten alkali salt is 1.01 × 104g (m2h)−1, which is 61.9% of Sanicro38.

中文翻译：

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PTA制备310s+WC涂层耐碱腐蚀性能研究

摘要 造纸厂锅炉水冷壁为延长水冷壁的使用寿命，多采用爆炸焊接复合钢管，因其具有优良的耐碱腐蚀性能，但其技术要求和成本较高。本文采用仿照 Sanicro38 成分的 FSAN38 粉末和 310s 不锈钢 + WC 粉末，通过等离子熔覆技术在 1020G 表面制备复合金属层。进行了电化学腐蚀和熔碱腐蚀实验，观察了熔覆层的显微组织和成分。与爆炸焊接复合钢板Sanicro38相比，发现310s+10%WC堆焊层的耐碱腐蚀性能最好，其电化学腐蚀速率为0.038184 mm a-1，