Evaluation of the corrosion resistance of thermal-spray coatings under oxidant atmosphere in a fluid catalytic-cracking unit

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	Evaluation of the corrosion resistance of thermal-spray coatings under oxidant atmosphere in a fluid catalytic-cracking unit
	F. Rizzo; M. Monteiro; M. F. Lopes; I. Caminha; C. Zeng; M. P. Paes
	2002
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	57 期号:3-4 页码:323-338
摘要	The effectiveness of several thermal-spray coatings for improving the corrosion resistance of a low-alloy steel was evaluated at 650degrees C under two conditions: an oxidizing atmosphere in a fluid catalytic-cracking regenerator of a petrochemical unit and a simulated laboratory atmosphere. The high porosity present in all coatings studied in the present work, inherent to the thermal-spray technique, allowed the penetration of gaseous species from the atmosphere into the substrate, leading to the formation of nonprotective oxides and sulfides, as well as internal oxidation, sulfidation, and nitridation. A protective alumina and/or chromia layer did not form, probably due to the relatively low temperature used in both the real and simulated conditions. Characterization of the phases present in the oxidized layer was carried out by X-ray diffraction (XRD), optical microscopy (OM), and scanning electron microscopy (SEM) with X-ray energy-dispersive analysis (EDS).
部门归属	pontificia univ catolica rio de janeiro, dept ciencias mat & met, br-22453900 rio de janeiro, brazil. inst nacl tecnol, lab met & dureza, br-20081310 rio de janeiro, brazil. chinese acad sci, state key lab corros & protect, inst corros & protect met, shenyang 110015, peoples r china.;rizzo, f (reprint author), pontificia univ catolica rio de janeiro, dept ciencias mat & met, rua marques sao vicente 225, br-22453900 rio de janeiro, brazil
关键词	Thermal-spray Coatings Diffusion Oxidation Sulfidation Internal Precipitation Mixed-gas Environments High-temperature Base Alloys Scales Oxidation
URL	查看原文
WOS记录号	WOS:000175465800008
引用统计	被引频次：4[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/321006/36407
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Rizzo,M. Monteiro,M. F. Lopes,et al. Evaluation of the corrosion resistance of thermal-spray coatings under oxidant atmosphere in a fluid catalytic-cracking unit[J]. Oxidation of Metals,2002,57(3-4):323-338.
APA	F. Rizzo,M. Monteiro,M. F. Lopes,I. Caminha,C. Zeng,&M. P. Paes.(2002).Evaluation of the corrosion resistance of thermal-spray coatings under oxidant atmosphere in a fluid catalytic-cracking unit.Oxidation of Metals,57(3-4),323-338.
MLA	F. Rizzo,et al."Evaluation of the corrosion resistance of thermal-spray coatings under oxidant atmosphere in a fluid catalytic-cracking unit".Oxidation of Metals 57.3-4(2002):323-338.