Why the decorative chromium coating electrodeposited from trivalent chromium electrolyte containing formic acid is darker

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Why the decorative chromium coating electrodeposited from trivalent chromium electrolyte containing formic acid is darker
	Liang AM(梁爱民)1,2 ; Zhang JY(张俊彦)1
刊名	Surface & Coatings Technology
	2012
卷号	206 期号:17 页码:3614-3618
关键词	Chromium coating Trivalent chromium electrodeposition Nanoctystal graphite Infrared emissivity
ISSN号	0257-8972
通讯作者	张俊彦
英文摘要	The color of the decorative chromium coatings electrodeposited from trivalent chromium electrolytes containing formic acid or formate is usually darker than that from conventional hexavalent chromium electrolytes. For the purpose of clarifying the reason for this situation, X-ray diffraction (XRD), selected area electron diffraction (SAED), electron probe microanalyzer (EPMA) and high-resolution transmission electron microscopy (HRTEM) were employed to investigate the phases and fine microstructure of the typical decorative chromium coating produced from a typical trivalent chromium electrolyte containing formic acid. The results show that the coating is amorphous embedded with the nanocrystals of graphite, Cr₂₃C₆ and body-centered cubic structure chromium (bcc Cr). The presence of the nanocrystal graphite with strong infrared emission performance is the main reason for the darker color of the coating.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	Natural Science Foundation of Gansu province (grant no. 096RJZA127)
语种	英语
WOS记录号	WOS:000303644900008
公开日期	2013-07-12
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/3465]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liang AM,Zhang JY. Why the decorative chromium coating electrodeposited from trivalent chromium electrolyte containing formic acid is darker[J]. Surface & Coatings Technology,2012,206(17):3614-3618.
APA	Liang AM,&Zhang JY.(2012).Why the decorative chromium coating electrodeposited from trivalent chromium electrolyte containing formic acid is darker.Surface & Coatings Technology,206(17),3614-3618.
MLA	Liang AM,et al."Why the decorative chromium coating electrodeposited from trivalent chromium electrolyte containing formic acid is darker".Surface & Coatings Technology 206.17(2012):3614-3618.