不锈钢在熔融(Li,Na,K)2CO3-(Na,K)Cl中的腐蚀行为
Corrosion Behavior of Stainless Steels in Molten (Li,Na,K)2CO3-(Na,K)Cl
摘 要
为了探讨在熔融碳酸盐中加入氯化物对不锈钢的腐蚀作用的影响，采用浸泡方法研究了304和310不锈钢在添加了氯化物的700 ℃熔融(Li,Na,K)2CO3中的腐蚀行为。结果表明，两种不锈钢都遭受了严重腐蚀，不锈钢的快速腐蚀与循环的氯化-氧化反应有关。
(Li,Na,K)2CO3-(Na,K)Cl
熔盐腐蚀
氯化-氧化
stainles steel
(Li,Na,K)2CO3-(Na-K)Cl
molten-salt corrosion
chlorination-oxidation
Abstract
In order to indentify the role of chloride in accelerating corrosion of stainless steels in molten carbonate, the corrosion behavior of type 304 and 310 stainless steels in molten (Li, Na, K)2CO3-(Na-KCl) at 700 ℃ in air was examined by immersion method. The experimental results indicated that the two steels underwent severe corrosion. The fast corrosion of the steels is related to a cyclic chlorination/oxidation reaction process.
中图分类号 TG172.8
所属栏目 试验研究
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收稿日期 2013/10/6
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备注刘颖(1974-),讲师,博士,从事材料加工研究,
引用该论文: LIU Ying. Corrosion Behavior of Stainless Steels in Molten (Li,Na,K)2CO3-(Na,K)Cl[J]. Corrosion & Protection, 2014, 35(8): 797
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参考文献
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【2】王胜林,王华. 高温相变蓄热的研究进展[J]. 能源工程,2004(6):6-11.
【3】崔海亭. 蓄热技术及其应用[M]. 北京:化学工业出版社,2004.
【4】SHIN B C,KIM S D. Ternary carbonate eutectic (lithium, sodium and potassium carbonates) for latent heat storage medium[J]. Solar Energy Materials,1990,21:81-90.
【5】NIKITINA E V,SANNIKOV V I,KUDYAKOV V Y,et al. Corrosion of aluminum in a molten eutectic mixture of the lithium, sodium, and potassium carbonates, containing PbCl2[J]. Protection of Metals,1996,32:556-558.
【6】LI Y S,Al-OMARY M,NIU Y,et al. The corrosion of various materials under chloride deposits at 623-723K in pure oxygen[J]. High Temp Maters Procs,2002,21:11-24.
【7】SPIEGEL M. Salt melt induced corrosion of metallic materials in waste incineration plants[J]. Mater Corro,1999,50:373-393.
【8】GRABKE H J,REESE E,SPIEGEL M. The effects of chlorides, hydrogen chloride, and sulfur dioxide in the oxidation of steels below deposits[J]. 1995,37:1023-1943.
【9】MCNALLAN M J,LIANG W W,OH J M,et al. Morphology of corrosion products formed on cobalt and nickel in argon-oxygen-chlorine mixtures at 1000 K[J]. Oxid Met,1982,17:371-389.
【10】LI Y S,NIU Y. Accelerated corrosion of pure Fe, Ni, Cr and several Fe-based alloys induced by ZnCl-KCl at 450 ℃ in oxidizing environment[J]. Materials Science and Engineering,2003,345:64-71.
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