| MgCl2-NaCl-KCl熔盐体系中金属Mg对316H不锈钢的缓蚀性能研究 |
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| 引用本文： | 左勇,曹明鹏,申淼,杨新梅.MgCl2-NaCl-KCl熔盐体系中金属Mg对316H不锈钢的缓蚀性能研究[J].中国腐蚀与防护学报,2021(1):80-86. |
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| 作者姓名： | 左勇 曹明鹏 申淼 杨新梅 |
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| 作者单位： | 中国科学院上海应用物理研究所;中国科学院洁净能源创新研究院;中国科学院大学 |
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| 基金项目： | 中国科学院战略性先导科技专项(XDA21000000)。 |
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| 摘 要： | 通过电化学方法结合浸泡腐蚀测试考察了金属Mg对MgCl2-NaCl-KCl(MNKC)熔盐的净化和腐蚀抑制作用。结果表明,金属Mg的加入量在500μg·g-1以上时,316H不锈钢在600℃MNKC熔盐中的腐蚀电位Ecorr<-0.80 V vs NiCl2/Ni,腐蚀电流密度Icorr<25μA/cm2,线性极化电阻Rp>800Ω·cm2,熔盐对316H不锈钢的腐蚀得到显著抑制。并对金属Mg对MNKC熔盐的净化和腐蚀抑制机理进行了探讨。
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| 关 键 词： | 氯化物熔盐 腐蚀控制 316H不锈钢 聚光太阳能发电站(CSP) |
Effect of Mg on Corrosion of 316H Stainless Steel in Molten Salts MgCl2-NaCl-KCl |
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| ZUO Yong,CAO Mingpeng,SHEN Miao,YANG Xinmei.Effect of Mg on Corrosion of 316H Stainless Steel in Molten Salts MgCl2-NaCl-KCl[J].Journal of Chinese Society For Corrosion and Protection,2021(1):80-86. |
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| Authors: | ZUO Yong CAO Mingpeng SHEN Miao YANG Xinmei |
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| Affiliation: | (Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;Dalian National Laboratory for Clean Energy,Chinese Academy of Sciences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | The effect of Mg on purification of molten salts MgCl2-NaCl-KCl(MNKC)and corrosion behavior of 316H stainless steel in MNKC molten salts were investigated by means of immersion test and electrochemical means.Results indicated that the corrosion of 316H stainless steel in MNKC molten salts at 600℃was well inhibited when the addition amount of Mg exceeds 500μg·g-1,correspondingly,316H stainless steel presents the free corrosion potential of Ecorr<-0.80 V vs NiCl2/Ni,corrosion current density of Icorr<25μA/cm2,and linear polarization resistance of Rp>800Ω·cm2.The purification and corrosion inhibition mechanism of Mg for the MNKC molten salts were discussed simultaneously. |
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| Keywords: | chloride molten salt corrosion mitigation 316H stainless steel concentrated solar power(CSP) |
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