锌铝合金共渗防腐技术

Anti-corrosion Technique for Zinc-aluminum Alloy Powder Diffusion

针对粉末渗锌技术存在的不足,通过对渗剂、加工工艺、共渗工艺参数、钝化剂的优选等研究,研发的锌铝合金共渗防腐技术可以使钢铁制品表面渗层具有更好的防腐性能,渗层耐中性盐雾试验可达1200 h以上。铁路混凝土简支T梁人行道钢横梁采用锌铝合金共渗防腐技术表面处理后,经过3年多的实际应用,未出现锈蚀等病害,表面状态良好。

To overcome the shortcomings of sheradizing,the optimizations of the penetrating agent,the processing technology,the co-infiltration process parameters and the passivating agent were studied.The surface of steel treated through zinc-aluminum alloy powder diffusion technique showed superior performance of the anti-corrosion.The neutral salt spray resistance of the prepared sample was more than 1200 h.The steel beams of railway concrete simply supported T-beam sidewalks treated with zincaluminum alloy co-infiltration anticorrosion technology,have been used in the railway for 3 years,and no obvious corrosion damage was found.