Influence of differential stress on the galvanic interaction of pyrite-chalcopyrite

	Influence of differential stress on the galvanic interaction of pyrite-chalcopyrite
	Qingyou Liu; Yanqing Zhang; Heping Li
	2013
发表期刊	Ionics
卷号	19 期号:1 页码:77-82
摘要	The effect of stress action on pyrite-chalcopyrite galvanic corrosion was investigated using polarization curves and electrochemical impedance spectroscopy (EIS) measurements. When stress increased from 0 to 4 x 10(5) Pa, the corrosion current density of pyrite-chalcopyrite increased from 5.678 to 6.719 mu A cm(-2), and the corrosion potential decreased from 281.634 to 270.187 mV, accompanied by a decrease in polarization resistance from 25.09 to 23.79 Omega center dot cm(2). EIS results show there have three time constants in the Nyquist diagrams, which indicated the presence of different steps during the corrosion process. Stress dramatically enhanced pyrite-chalcopyrite galvanic corrosion by affecting the Cu1 -aEuro parts per thousand x Fe1 -aEuro parts per thousand y S-2 film and the double layer, whereas had little impact on the adsorption species. When the stress changed from 0 to 4 x 10(5) Pa, the pore resistance and capacitance of the Cu1 -aEuro parts per thousand x Fe1 -aEuro parts per thousand y S-2 film, R (p) and Q (p), changed by 25.72 and 72.28 %, respectively. The adsorption species resistance, R (sl), and capacitance, Q (sl), only changed by 9.77 and 2.31 %, respectively.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5128
专题	地球内部物质高温高压实验室_地球内部物质高温高压实验室_期刊论文
推荐引用方式 GB/T 7714	Qingyou Liu,Yanqing Zhang,Heping Li. Influence of differential stress on the galvanic interaction of pyrite-chalcopyrite[J]. Ionics,2013,19(1):77-82.
APA	Qingyou Liu,Yanqing Zhang,&Heping Li.(2013).Influence of differential stress on the galvanic interaction of pyrite-chalcopyrite.Ionics,19(1),77-82.
MLA	Qingyou Liu,et al."Influence of differential stress on the galvanic interaction of pyrite-chalcopyrite".Ionics 19.1(2013):77-82.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Influence of differe（187KB）			开放获取	使用许可	浏览请求全文