Technical Note: Cyclohexylamine Carbonate as Vapor Phase Inhibitor for Nd-Fe-B Magnet

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	Technical Note: Cyclohexylamine Carbonate as Vapor Phase Inhibitor for Nd-Fe-B Magnet
	X. Zhang; Y. T. Ma; Y. Li; M. K. Lei; F. H. Wang
	2013
发表期刊	Corrosion
ISSN	0010-9312
卷号	69 期号:7 页码:647-654
摘要	The efficiency of cyclohexylamine carbonate (CHC) as a vapor phase inhibitor for a Nd-Fe-B magnet in the simulated atmospheric environments as well as under thin electrolyte layers was investigated using scanning electron microscopy (SEM) and electrochemical methods. SEM results suggested that CHC was an effective vapor phase inhibitor for Nd-Fe-B subjected to a 7-day exposure in the simulated atmospheric environments, and the Nd-rich phase was also soundly protected. Polarization and electrochemical impedance spectroscopy (EIS) measurements indicated that CHC was an anodic type of inhibitor for Nd-Fe-B, and the inhibition efficiency can reach a relatively high value. The corrosion inhibition mechanism was studied through IR spectroscopy and the potential of zero charge (PZC) measurements. IR spectra analysis demonstrated that physisorption played a main role in the process of adsorbing CHC. PZC tests indicated that the Nd-Fe-B surface carried negative charges at free corrosion potential. The corrosion inhibition of CHC was achieved by physisorption of protonated amine on the negatively charged Nd-Fe-B surface via electrostatic attraction.
部门归属	[zhang, x. ; ma, y. t. ; li, y. ; wang, f. h.] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. [zhang, x. ; lei, m. k.] dalian univ technol, dept mat sci & engn, surface engn lab, dalian 116023, peoples r china. ; li, y (reprint author), chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. ; liying@imr.ac.cn
关键词	Cyclohexylamine Carbonate Inhibition Mechanism Nd-fe-b Potential Of Zero Charge Vapor Phase Inhibitor Volatile Corrosion-inhibitors Ndfeb Permanent-magnets Mild-steel Part i Behavior Media Acid Eis
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71693
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Zhang,Y. T. Ma,Y. Li,et al. Technical Note: Cyclohexylamine Carbonate as Vapor Phase Inhibitor for Nd-Fe-B Magnet[J]. Corrosion,2013,69(7):647-654.
APA	X. Zhang,Y. T. Ma,Y. Li,M. K. Lei,&F. H. Wang.(2013).Technical Note: Cyclohexylamine Carbonate as Vapor Phase Inhibitor for Nd-Fe-B Magnet.Corrosion,69(7),647-654.
MLA	X. Zhang,et al."Technical Note: Cyclohexylamine Carbonate as Vapor Phase Inhibitor for Nd-Fe-B Magnet".Corrosion 69.7(2013):647-654.