Chromium carbide coatings produced on ductile cast iron QT600-3 by thermal reactive diffusion in fluoride salt bath: Growth behavior, microstructure evolution and kinetics

doi:10.1016/j.ceramint.2018.09.304

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Chromium carbide coatings produced on ductile cast iron QT600-3 by thermal reactive diffusion in fluoride salt bath: Growth behavior, microstructure evolution and kinetics
	Su, XZ ; Zhao, SF ; Sun, H ; Yang, XM ; Zhang, P ; Xie, LD
刊名	CERAMICS INTERNATIONAL
	2019
卷号	45 期号:1 页码:1196—1201
关键词	STEEL SUBSTRATE LAYER THICKNESS LOW-TEMPERATURE DEPOSITION
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2018.09.304
文献子类	期刊论文
英文摘要	A series of chromium carbide coatings were formed on ductile cast iron QT600-3 by thermal reactive diffusion (TRD) processes in fluoride salt bath at 850-980 degrees C for 10 min similar to 40 h under an argon atmosphere. Coatings were analyzed by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDX). The results demonstrate that the microstructure of chromium carbide coatings formed on ductile cast iron QT600-3 at 850 degrees C is related to the treatment time. At first 10 min, there is only a thin layer of Cr7C3 in the coating. At 1 h, the outermost layer of the coating is a thin Cr23C6 layer, and there is a thin M3C layer beneath the M7C3 layer. With increasing treatment time, the thickness of all layers in the coatings increases. For the sample treated for longer than 1 h, the microstructure of coating is Cr23C6, M7C3 and M3C from the outermost layer to the substrate. The microstructure of chromium carbide coatings formed on high C content steel substrates via TRD processes is independent with the composition of the base salt. The growth kinetics of chromium carbide coating follows a parabolic law with an activation energy of 129.906 kJ/mol. The evolution of hardness of coatings is consistent with the microstructure evolution of coatings.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31509]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Su, XZ,Zhao, SF,Sun, H,et al. Chromium carbide coatings produced on ductile cast iron QT600-3 by thermal reactive diffusion in fluoride salt bath: Growth behavior, microstructure evolution and kinetics[J]. CERAMICS INTERNATIONAL,2019,45(1):1196—1201.
APA	Su, XZ,Zhao, SF,Sun, H,Yang, XM,Zhang, P,&Xie, LD.(2019).Chromium carbide coatings produced on ductile cast iron QT600-3 by thermal reactive diffusion in fluoride salt bath: Growth behavior, microstructure evolution and kinetics.CERAMICS INTERNATIONAL,45(1),1196—1201.
MLA	Su, XZ,et al."Chromium carbide coatings produced on ductile cast iron QT600-3 by thermal reactive diffusion in fluoride salt bath: Growth behavior, microstructure evolution and kinetics".CERAMICS INTERNATIONAL 45.1(2019):1196—1201.