Morphologies of coke deposited on surfaces of pure Ni and Fe-Cr-Ni-Mn alloys during pyrolysis of propane

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	Morphologies of coke deposited on surfaces of pure Ni and Fe-Cr-Ni-Mn alloys during pyrolysis of propane
	X. Q. Wu; Y. S. Yang; W. Y. He; Q. Zhan; Z. Q. Hu
	2000
发表期刊	Journal of Materials Science
ISSN	0022-2461
卷号	35 期号:4 页码:855-862
摘要	Morphologies of coke deposited on pure Ni and Fe-Cr-Ni-Mn alloy surfaces during pyrolysis of propane at 750-1000 degrees C have been investigated in detail. It is found that surface scales developed initially on pure Ni and Fe-Cr-Ni-Mn alloy surfaces have no catalytic effect on deposition of filamentary coke. But metal or alloy substrates under cracked scales strongly catalyze nucleation and growth of filamentary coke along the cracks. Ni is more efficient to catalyze the growth of filamentary coke than Fe-Cr-Ni-Mn alloys. The structure of oxide scales has marked influence on distribution and size of filamentary coke deposited on alloy surfaces. Coking morphology is closely dependent of coking temperature and time. Either increasing coking temperature or prolonging coking time results in coking morphology changes from filamentary to spherical. Both dissolution/precipitation mechanism and direct nucleation and growth mechanism may make a contribution to the development of graphitic film coke. (C) 2000 Kluwer Academic Publishers.
部门归属	chinese acad sci, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china. chinese acad sci, inst met res, dept superalloy & special casting, shenyang 110015, peoples r china. chinese acad sci, inst met res, state key lab rapidly solidifed nonequilibrium al, beijing 100864, peoples r china.;wu, xq (reprint author), chinese acad sci, inst corros & protect met, state key lab corros & protect, wencui rd 62, shenyang 110015, peoples r china
关键词	Growth Carbon Nickel Cast Microstructure
URL	查看原文
WOS记录号	WOS:000085037800010
引用统计	被引频次：5[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/321006/37212
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Q. Wu,Y. S. Yang,W. Y. He,et al. Morphologies of coke deposited on surfaces of pure Ni and Fe-Cr-Ni-Mn alloys during pyrolysis of propane[J]. Journal of Materials Science,2000,35(4):855-862.
APA	X. Q. Wu,Y. S. Yang,W. Y. He,Q. Zhan,&Z. Q. Hu.(2000).Morphologies of coke deposited on surfaces of pure Ni and Fe-Cr-Ni-Mn alloys during pyrolysis of propane.Journal of Materials Science,35(4),855-862.
MLA	X. Q. Wu,et al."Morphologies of coke deposited on surfaces of pure Ni and Fe-Cr-Ni-Mn alloys during pyrolysis of propane".Journal of Materials Science 35.4(2000):855-862.