扩散处理热浸镀铝钢高温抗氧化行为的研究

IMECH-IR > 力学所知识产出(1956-2008)

	扩散处理热浸镀铝钢高温抗氧化行为的研究
其他题名	The Oxidation Resistance Behavior of Aluminized Steel at High Temperature in Air After Diffusion Treatment
	于升学; 夏原; 姚枚
发表期刊	稀有金属材料与工程=Rare Metal Materials and Engineering
	2006
卷号	35 期号:suppl.页码:74-78
ISSN	1002-185X
其他摘要	对经不同扩散工艺处理的热浸镀铝层高温抗氧化性进行了研究,通过SEM、TEM、XRD分析了经扩散处理后,热浸镀铝层高温氧化过程中组织结构的变化情况,分析了热浸镀铝层高温抗氧化性能和微观结构的关系,确定了提高热浸镀铝层高温抗氧化性的适宜扩散温度.结果表明,经750℃扩散处理,热浸镀铝层结构由较厚的外表层(Fe2Al5+FeAl2)及内层(FeAl+条状FeAl2)组成,条状FeAl2的形成为氧提供了扩散通道,其抗氧化性较差;经950℃扩散处理,镀层外表层变薄,外表层转为单一FeAl2、内层为FeAl,并出现早期内氧化裂纹,其抗氧化性较差:当扩散处理温度为850℃时,镀层外表层变薄,结构转为FeAl2+少量Fe2Al5,而内层增厚,其结构为FeAl+球状FeAl2,而内层FeAl2球化,增强了氧由内层向基体扩散的阻碍作用,使氧只能逐层形成Al2O3+Fe2O3的氧化膜,提高了镀层的高温抗氧化性. ; The effect of diffuse treatment on hot-dip aluminizing steel microstructure and oxidation resistance behavior at high-temperature in air was studied by means of TEM, SEM and XRD. The results show that the diffusion temperature has significant effect on the structure of coatings and its oxidation resistance. After diffusion at 750 degrees C, the coating consisted of thicker outer layer (Fe2Al5+FeAl2) and thinner internal layer(FeAl2+stripe FeAl2), the oxidation resistance of the coating was poor. After diffusion at 950 degrees C, the outer layer was single FeAl2 phase, the internal layer was FeAl phase, the oxidation resistance of the coating declined due to the occurrence of early stage internal oxidation cracks in the coating. After diffusion at 850 degrees C, the outer layer became thinner and consisted of FeAl2+Fe2Al5 (small amount), the internal layer became thicker and consisted of FeAl + spherical FeAl2, the FeAl2 phase in the internal layer were spherioidized, resulting in hindering the diffusion of oxygen into the matrix, thus making oxygen forming Al2O3+Fe2O3 oxidation film only, finally the coating oxidation resistance of were improved.
学科领域	力学
URL	查看原文
收录类别	SCI ; EI ; CSCD
语种	中文
WOS记录号	WOS:000240623800019
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/17110
专题	力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	于升学,夏原,姚枚. 扩散处理热浸镀铝钢高温抗氧化行为的研究[J]. 稀有金属材料与工程=Rare Metal Materials and Engineering,2006,35,suppl.,:74-78.
APA	于升学,夏原,&姚枚.(2006).扩散处理热浸镀铝钢高温抗氧化行为的研究.稀有金属材料与工程=Rare Metal Materials and Engineering,35(suppl.),74-78.
MLA	于升学,et al."扩散处理热浸镀铝钢高温抗氧化行为的研究".稀有金属材料与工程=Rare Metal Materials and Engineering 35.suppl.(2006):74-78.

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