片状Al-Zn-Si合金粉的析氢行为与抑制剂研究

中国腐蚀与防护学报

2013, Vol. 33

Issue (1): 61-69

技术报告

本期目录 | 过刊浏览

片状Al-Zn-Si合金粉的析氢行为与抑制剂研究

蒋穹¹ ,缪强¹ ,丁祥² ,魏小昕³

1. 南京航空航天大学材料科学与技术学院南京 211106;

Behavior of Hydrogen Evolution and Inhibitors for Al-Zn-Si Alloy Flakes

JIANG Qiong¹, MIAO Qiang¹, DING Xiang², WEI Xiaoxin³

全文: PDF(9855 KB)

摘要:

通过析氢实验考察了不同锌与铝析氢抑制剂对Al-Zn-Si合金片粉在10 mass%乙二醇单丁醚水溶液的析氢抑制作用，并用傅里叶红外测试、扫描电镜和XRD等手段对合金粉末试样进行分析和表征。结果表明四丁基溴化铵(TBAB)和羟乙叉基二膦酸(HEDP)对铝锌硅合金粉在10 mass%的乙二醇单丁醚水溶液中的析氢有较好的抑制效果；当TBAB/Al-Zn-Si=50(mass%)、HEDP/Al-Zn-Si=100(mass%)时缓蚀效果最为理想，缓蚀效率可分别达到78.99%和62.77%；结合电位-pH图对合金粉在碱性介质的微电偶腐蚀特征给出了解释，最后初步探讨了析氢抑制剂缓蚀机理。

关键词 ： Al-Zn-Si片状合金粉末, 析氢, 腐蚀抑制剂, 电位-pH图, 微电偶腐蚀

Abstract：

The behavior of hydrogen evolution was determined by gas volumetric measurement over a period of 72 h at 45 ℃. The inhibiting effectiveness of ten kinds of corrosion inhibitors on Al-Zn-Si alloy powders in a solution of water with 10 mass% C₆H₁₄O₂ was compared. The investigations of Al-Zn-Si samples were carried out by use of IR, SEM and XRD. It has been shown that the hydrogen evolution of flake Al-Zn-Si powder can be inhibited by the addition of TBAB and HEDP with an optimal concentration of TBAB/Al-Zn-Si=50(mass%) and HEDP/Al-Zn-Si=100(mass%) in 2-butoxyothanol aqueous solutions the inhibition efficiency can reach 78.99% and 62.77%, respectively. At last, Pourbaix diagram was used to analyse the microgalvanic corrosion of Al-Zn-Si alloy powder in aqueous media, and the inhibition mechanism of the inhibitors TBAB was discussed briefly.

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蒋穹,缪强,丁祥,魏小昕. 片状Al-Zn-Si合金粉的析氢行为与抑制剂研究[J]. 中国腐蚀与防护学报, 2013, 33(1): 61-69.
JIANG Qiong, MIAO Qiang, DING Xiang, WEI Xiaoxin. Behavior of Hydrogen Evolution and Inhibitors for Al-Zn-Si Alloy Flakes. Journal of Chinese Society for Corrosion and protection, 2013, 33(1): 61-69.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2013/V33/I1/61

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