研究了四种不同Mn含量的铁锰二元合金在450℃液锌中的腐蚀行为,探讨了Mn对铁锌反应的影响规律.结果表明,铁锰二元合金在液锌中的腐蚀属于溶解性腐蚀.随着锰含量的增加,腐蚀速率有较大变化.含锰量为10wt%的合金,其腐蚀速率为5.79×10~(-3)g·cm~(-2)·h~(-1),含锰量为15wt%的合金,其腐蚀速率为3.64×10~(-2)g·cm~(-2)·h~(-1).锰含量为10wt%时,腐蚀产物由致密的8相层和块状的ζ相层组成,致密的较厚的δ相层的存在,降低了铁锌反应速率,合金表现出较好的耐液锌腐蚀能力,而锰含量为15wt%时,腐蚀产物由大量疏松的颗粒状ζ相分布在液锌相中组成,疏松的组织恶化了合金的耐液锌腐蚀能力.
The corrosion behaviors of Fe-Mn binary alloys with different content of manganese in molten zinc were studied in order to better understand manganese element how affected the formation and growth of Fe-Zn phases. Experiment results show that the corrosion mechanism of Fe-Mn binary alloys in molten zinc is dissolution. The alloy with manganese content of 10wt% , shows better corrosion resistance in molten zinc compared with the other Fe-Mn binary alloys. The average corrosion rate of the Fe-10Mn alloy is 5.79 × 10~(-3) g/(cm~2·h) and the corrosion products consist of compact δ phase layer and ζ phase layer, which can slowdown the reactions of Fe and Zn. When the manganese content up to 15wt% ,the Fe-Mn alloy exhibits the worst corrosion resistance. The average corrosion rate of the Fe-15Mn alloy is 3.64 × 10~(-2)g/(cm~2·h), and the corrosion products exhibit a loose corrosion layer composed of small ζ particles distributed in molten zinc,causing deterioration of the corrosion resistance.
参考文献
| [1] | 马晓丽 .锌锅腐蚀机理及耐锌蚀防护层的研究[D].沈阳工业大学,2006. |
| [2] | 王宝军 .热浸镀锌锌锅中设备用新材料的液锌腐蚀机制研究[D].北京科技大学,2006. |
| [3] | 王宝军,王文俊,林均品.Fe3Si和316不锈钢在工业锌液中的腐蚀机制[J].鞍钢技术,2006(01):15-19. |
| [4] | Brunnock;Jones;Jenkins .Interactions between liquid zinc and bath hardware materials in continuous galvanizing lines[J].Ironmaking and Steelmaking,1996,23(02):171-1176. |
| [5] | Matthew L Barris .Material evaluation of liquid metal corrosion in Zn-Al hot-dip coating baths[D].West Virginia,The College of Engineering and Mineral Resource at West Virginia University Morgantown,2000. |
| [6] | 卢锦堂;许乔瑜;孔纲.热浸镀技术与应用[M].北京:机械工业出版社,2006:43-47. |
| [7] | 曾大新,苏俊义,陈勉己.固体金属在液态金属中的熔化和溶解[J].铸造技术,2000(01):33-36. |
| [8] | 王赫莹 .热镀锌锅内壁陶瓷涂层制备及其耐锌蚀机理的研究[D].沈阳工业大学,2007. |
| [9] | R. MISHRA;Monojit DUTTA .Effect of Steel Composition on Iron Dissolution in Molten Zinc and Development of Fe-Zn Phases on Steel Surface[J].ISIJ International,2007(10):1504-1509. |
| [10] | Bicao P;Hanhua W;Xuping S;Zhi L;Fucheng Y .Effects of zinc bath temperature on the coatings of hot-dip galvanizing[J].Surface & Coatings Technology,2008(9):1785-1788. |
| [11] | Guy Beumont;Guillaume Dupont;Pierre Perrot .The Fe-Zn-Mn System at 450 ℃[J].Zeitschrift fur Metallkunde,1995,86(09):608-6613. |
| [12] | Giorgi;Guillot .Theoretical model of the interfacial reactione between solid iron and liquid zinc-aluminum alloy[J].Journal of Mnterials Science,2005,40:2263-22268. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%