ZnFe2O4基材料在 NaF-AlF3-Al2O3熔盐中的腐蚀

中国腐蚀与防护学报

2000, Vol. 20

Issue (5): 275-280

研究报告

本期目录 | 过刊浏览

ZnFe2O4基材料在 NaF-AlF3-Al2O3熔盐中的腐蚀

于先进;邱竹贤;金松哲

山东工程学院清洁能源工程技术研究中心

CORROSION OF ZINC FERRITE IN NaF-ALF3-Al2O3 MOLTEN SALTS

Xianjin Yu;;

山东工程学院清洁能源工程技术研究中心

全文: PDF(117 KB)

摘要: 采用锌铁尖晶石材料作为铝电解惰阳极，考察了这种阳极在NaF3-Al2O3熔盐中的腐蚀行为，阳极电流密度为0-2.5A/cm2.实验结果表明,锌铁尖晶石材料在阳极极化条件下的NaF-AlF3-Al2O3熔盐中具有很好的耐腐蚀性能.在低电流密度下,阳检材料的腐蚀速度随电流密度的增大而增大,最高的腐蚀速度出现于0.5-0.75A/cm2.此后,腐蚀速度随电流密度的增大而降低.实验证明,高阳极电流密度(>1.5A/cm2)\熔盐电解质中保持高Al2O3含量和低NaF/AlF3摩尔比,对降低阳极材料的腐蚀速度有利,这也将是惰性阳极应用的重要条件.

关键词 ：尖晶石材料, 铝电解, 惰性阳极

Abstract：Zine ferrite was used as inert anode materials for aluminum electrolysis.The corrosion behavior of zinc ferrite as investigated under the anodic current density of 0-2.5A/cm2. Experimental results prove that zinc ferrite materials is very corrosion resistant to molten NaF-AlF3-Al2O3 under the condition of anodic polarization.The biggest corrosion rate appears in the range of 0.5-0.75A/cm2.The corrosion rate will get down after that pesk value.High anodic current density(>1.5A/cm2), high alumina concentration and low mole ratio of NaF/AlF3 in the molten salts would be the most important conditions for using inert anode.

Key words： spinel materiar aluminum electrolysis inert anode

收稿日期: 1999-09-13

ZTFLH:

TF16

Corresponding author: Xianjin Yu

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引用本文:

于先进; 邱竹贤; 金松哲 . ZnFe2O4基材料在 NaF-AlF3-Al2O3熔盐中的腐蚀[J]. 中国腐蚀与防护学报, 2000, 20(5): 275-280 .
Xianjin Yu. CORROSION OF ZINC FERRITE IN NaF-ALF3-Al2O3 MOLTEN SALTS. J Chin Soc Corr Pro, 2000, 20(5): 275-280 .

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2000/V20/I5/275

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