Corrosion Inhibition of Combined Inhibitor on AZ91D Magnesium Alloy in Ethylene Glycol Coolant

YANG Jun; GONG Min; ZHENG Xing-wen; ZHANG Ling-dan; LI Li

doi:10.11973/fsyfh-201703008

Corrosion & Protection > 2017 > 38(3): 193-198. > DOI: 10.11973/fsyfh-201703008

YANG Jun, GONG Min, ZHENG Xing-wen, ZHANG Ling-dan, LI Li. Corrosion Inhibition of Combined Inhibitor on AZ91D Magnesium Alloy in Ethylene Glycol Coolant[J]. Corrosion & Protection, 2017, 38(3): 193-198. DOI: 10.11973/fsyfh-201703008

Citation:

PDF (1953 KB)

Corrosion Inhibition of Combined Inhibitor on AZ91D Magnesium Alloy in Ethylene Glycol Coolant

1. School of Materials and Science Engineering, Sichuan University of Science and Engineering, Zigong 643000, China;
2. School of Chemical and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China

More Information

Received Date: September 17, 2015

Graphical Abstract

Abstract

Abstract

Electrochemical methods, surface morphology observation and corrosion product analysis were used to inverstigate the inhibition of combined inhibitors compound by dibasic sodium phosphate (DSP) and gluconate sodium (GS) on AZ91D magnesium alloy in 50% (volume) ethylene glycol coolant. The results show that DSP is a mixed type corrosion inhibitor for AZ91D magnesium alloy in 50% ethylene glycol coolant. GS has no corrosion inhibition. There exists synergistic effect between DSP and GS, it is a combined inhibitor with mainly controling the anodic process.. It tended to be a stable inhibition ratio as the mass concentration ratio of DSP to GS was 4:1 i.e., combined inhibitior E. With the increase of the content of combined inhibitor E, inhibition efficiency increased, when 2.5 g/L was added, the inhibition efficiency reached above 90%. The corrosion effect of the mixed inhibitor for AZ91D was to form MgHPO₄, which may form a complex on the AZ91D surface due to the action of GS, and then depressed the corrosion of AZ91D in ethylene glycol coolant.
- AZ91D magnesium alloy,
- ethylene glycol coolant,
- corrosion inhibition,
- dibasic sodium phosphate (DSP),
- gluconate sodium (GS)

FullText(HTML)

References (27)

References

[1]	曾荣昌,柯伟. 镁合金的最新发展及应用情景[J]. 金属学报,2001,37(7):673-685.
[2]	祁庆琚,刘勇兵. 镁合金的研究及其在汽车工业中的应用与展望[J]. 汽车工程,2002,24(2):94-100.
[3]	李凌杰,王莎,肖印,等. AM60镁合金在汽车发动机冷却液中的腐蚀电化学行为[J]. 电化学,2010,16(4):425-429.
[4]	王保成. 材料腐蚀与防护[M]. 北京:北京大学出版社,2012:261-262.
[5]	张继心,张巍. 镁合金在水-乙二醇体系中的电偶腐蚀及缓蚀剂[J]. 北京科技大学学报,2006,3(26):263-268.
[6]	BALLERINI G,BARDI U,BIGNUCOLOOR,et al. About some corrosion mechanisms of AZ91D magnesium alloy[J]. Corrosion Science,2005,47(9):2173-2184.
[7]	HU J Y,ZENG D Z,ZHANG Z,et al. 2-Hydroxy-4-methoxy-acetophenone as an environment-friendly corrosion inhibitor for AZ91D magnesium alloy[J]. Corrosion Science,2013,74:35-43.
[8]	蒋晓军,陈昌国,刘渝萍. 稀土强化镁合金耐蚀性能的研究进展[J]. 腐蚀与防护,2012,33(1):46-50.
[9]	邹云,王洋洋,刘影. 镁合金缓蚀剂的研究进展[J]. 电镀与环保,2014,34(4):1-4.
[10]	扈俊颖. NaCl介质中镁及镁合金缓蚀剂的研究[D]. 武汉:华中科技大学,2012:13-19.
[11]	高继峰,刘德绪,龚金海. 磷酸一氢钠对AZ91镁合金的缓蚀作用[J]. 腐蚀与防护,2014,35(3):233-238.
[12]	饶楚仪,张大全,金星. 模拟汽车冷却液中海藻酸钠对AZ31镁合金的缓蚀作用[J]. 腐蚀与防护,2011,32(12):936-938.
[13]	王莎. 汽车发动机冷却液中AM60镁合金的腐蚀与防护[D]. 重庆:重庆大学,2010.
[14]	刘元刚,张巍,李久青,等. 汽车发动机冷却液中镁合金缓蚀剂的研究[J]. 腐蚀科学与防护技术,2005,17(2):83-85.
[15]	黄道兵. 乙二醇和溶液中镁合金缓蚀剂及其机理研究[D]. 武汉:华中科技大学,2012.
[16]	WAN T T,LIU Z X,BU M I,et al. Effect of surface pretreatment on corrosion resistance and bond strength of magnesium AZ31 alloy[J]. Corrosion Science,2013,66:33-42.
[17]	周必芳,周勇,方坤,等. AZ91D镁合金用复合缓蚀剂缓蚀行为的研究[J]. 电镀与精饰,2012,34(12):1-5.
[18]	HU J Y,HUANG D B. Research on the inhibition mechanism of tetraphenylporphyrin on AZ91D magnesium alloy[J]. Corrosion Science,2012,63:367-378.
[19]	QU Q,MA J,WANG L,et al. Corrosion behaviour of AZ31B magnesium alloy in NaCl solutions saturated with CO₂[J]. Corrosion Science,2011,53:1186-1193.
[20]	曹楚南,张鉴清. 电化学阻抗谱导论[M]. 北京:科学出版社,2002:185-187.
[21]	SHEN S Y,ZUO Y,ZHAO X H. The effects of 8-hydroxyquinoline on corrosion performance of a Mg-rich coating on AZ91D magnesium alloy[J]. Corrosion Science,2013,76:275-283.
[22]	LIU S,ZHONG Y,JIANG R Y,et al. Corrosion inhibition of zinc in tetra-n-butylammonium bromide aerated aqueous solution by benzotriazole and Na₃PO₄[J]. Corrosion Science,2011,53:746-759.
[23]	HU J Y,HUANG D B,SONG G L,et al. The synergistic inhibition effect of organic silicate and inorganic Zn salt on corrosion of Mg-10Gd-3Y magnesium alloy[J]. Corrosion Science,2011,53:4093-4101.
[24]	GAO H,LI Q,DAI Y,et al. High efficiency corrosion inhibitor 8-hydroxyquinoline and its synergistic effect with sodium dodecylbenzenesulphonate on AZ91D magnesium alloy[J]. Corrosion Science,2010,52:1603-1609.
[25]	SONG G,ST JOHN D H. Corrosion behaviour of magnesium in ethylene glycol[J]. Corrosion Science,2004,46:1381-1399.
[26]	范金龙,龚敏,侯肖. 3A21铝合金在乙二醇冷却液中的腐蚀行为[J]. 腐蚀与防护,2014,35(11):1116-1121.
[27]	翁诗甫. 傅里叶变换红外光谱分析[M]. 北京:化学工业出版社,2010,5:348-352.

Cited By

Get Citation

PDF

XML

Article views (10) PDF downloads (4)

Turn off MathJax

Article Contents

Abstract

References

Corrosion Inhibition of Combined Inhibitor on AZ91D Magnesium Alloy in Ethylene Glycol Coolant

Abstract

References

Catalog

Export File

Citation

Format

Content