The anodic dissolution of magnesium in chloride and sulphate solutions

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	The anodic dissolution of magnesium in chloride and sulphate solutions; The anodic dissolution of magnesium in chloride and sulphate solutions
	G. Song; A. Atrens; D. St John; X. Wu; J. Nairn
	1997 ; 1997
发表期刊	Corrosion Science ; Corrosion Science
ISSN	0010-938X ; 0010-938X
卷号	39 期号:10-11 页码:1981-2004
摘要	The electrochemical behaviour of magnesium was studied in representative chloride and sulphate solutions including NaCl, Na2SO4, NaOH and their mixed solutions, HCl, and H2SO4: (1) by measuring electrochemical polarisation curves, (2) by using electrochemical impedance spectroscopy (EIS), and (3) by simultaneous measurement of hydrogen gas evolution and measurement of magnesium dissolution rates using inductively coupled plasma atomic emission spectrophotometry (ICPEAS). These experiments showed that a partially protective surface film played an important role in the dissolution of magnesium in chloride and sulphate solutions. Furthermore, the experimental data were consistent with the involvement of the intermediate species Mg+ in magnesium dissolution at film imperfections or on a film-free surface. At such sites, magnesium first oxidised electrochemically to the intermediate species Mg+, and then the intermediate species chemically reacted with water to produce hydrogen and Mg2+. The presence of Cl- ions increased the film free area, and accelerated the electrochemical reaction rate from magnesium metal to Mg+. (C) 1997 Elsevier Science Ltd.; The electrochemical behaviour of magnesium was studied in representative chloride and sulphate solutions including NaCl, Na2SO4, NaOH and their mixed solutions, HCl, and H2SO4: (1) by measuring electrochemical polarisation curves, (2) by using electrochemical impedance spectroscopy (EIS), and (3) by simultaneous measurement of hydrogen gas evolution and measurement of magnesium dissolution rates using inductively coupled plasma atomic emission spectrophotometry (ICPEAS). These experiments showed that a partially protective surface film played an important role in the dissolution of magnesium in chloride and sulphate solutions. Furthermore, the experimental data were consistent with the involvement of the intermediate species Mg+ in magnesium dissolution at film imperfections or on a film-free surface. At such sites, magnesium first oxidised electrochemically to the intermediate species Mg+, and then the intermediate species chemically reacted with water to produce hydrogen and Mg2+. The presence of Cl- ions increased the film free area, and accelerated the electrochemical reaction rate from magnesium metal to Mg+. (C) 1997 Elsevier Science Ltd.
部门归属	univ queensland, dept min minerals & mat engn, crc alloy & solidificat technol, brisbane, qld 4072, australia. chinese acad sci, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china.;song, g (reprint author), univ queensland, dept min minerals & mat engn, crc alloy & solidificat technol, brisbane, qld 4072, australia ; univ queensland, dept min minerals & mat engn, crc alloy & solidificat technol, brisbane, qld 4072, australia. chinese acad sci, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china.;song, g (reprint author), univ queensland, dept min minerals & mat engn, crc alloy & solidificat technol, brisbane, qld 4072, australia
关键词	Magnesium Magnesium Eis Eis Corrosion Corrosion Electrochemical Dissolution Electrochemical Dissolution Negative Negative Difference Effect Difference Effect Impedance Plane Displays Impedance Plane Displays Stability Conditions Stability Conditions Steady-state Steady-state Corrosion Corrosion Behavior Behavior Mg Mg
URL	查看原文 ; 查看原文
WOS记录号	WOS:000071426300017 ; WOS:000071426300017
引用统计	被引频次：799[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38083
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. Song,A. Atrens,D. St John,et al. The anodic dissolution of magnesium in chloride and sulphate solutions, The anodic dissolution of magnesium in chloride and sulphate solutions[J]. Corrosion Science, Corrosion Science,1997, 1997,39, 39(10-11):1981-2004, 1981-2004.
APA	G. Song,A. Atrens,D. St John,X. Wu,&J. Nairn.(1997).The anodic dissolution of magnesium in chloride and sulphate solutions.Corrosion Science,39(10-11),1981-2004.
MLA	G. Song,et al."The anodic dissolution of magnesium in chloride and sulphate solutions".Corrosion Science 39.10-11(1997):1981-2004.