Accelerated phase transformation of thermally grown alumina on Ni2Al3: Effect of dispersion of hcp-oxides with various content and particle size and chemistry

doi:10.1016/j.surfcoat.2020.125861

CORC > 金属研究所 > 中国科学院金属研究所

	Accelerated phase transformation of thermally grown alumina on Ni2Al3: Effect of dispersion of hcp-oxides with various content and particle size and chemistry
	Khan, A.1,2; Dong, Z.2; Peng, X.3,4
刊名	SURFACE & COATINGS TECHNOLOGY
	2020-07-25
卷号	394 页码:11
关键词	Oxide dispersion Electrodeposition Aluminide coating Phase transformation Raman spectroscopy Oxidation
ISSN号	0257-8972
DOI	10.1016/j.surfcoat.2020.125861
通讯作者	Peng, X.(xpeng@imr.ac.cn)
英文摘要	A promotion in theta-to-a phase transformation of thermally grown alumina on a nickel aluminide coating by dispersing Cr2O3 nanoparticles inside has been reported most recently. In the present work, the nickel aluminide coating has been deliberately dispersed with hexagonal closed pack (hcp)-structured alpha-Al2O3 or Cr2O3 particles which vary in size from nano range to micron range and in content from 2.4 wt% to 6.5 wt%, respectively. The oxidation in air at 900 degrees C leads to several findings: 1) either the finer the size or the higher the content of the oxide particle dispersion, the faster the theta-to-alpha phase transformation, and the lower the oxidation rate, 2) alpha-Al2O3 appears to be more effective than Cr2O3 in facilitating the theta-to-alpha phase transformation; 3) faster theta-to-alpha phase transformation helps to form more adherent thermally grown alumina. The reasons for the results are interpreted.
资助项目	National Natural Science Foundation of China (NSFC)[51471178] ; National Natural Science Foundation of China (NSFC)[51771088]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000542100500038
资助机构	National Natural Science Foundation of China (NSFC)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/140409]
专题	金属研究所_中国科学院金属研究所
通讯作者	Peng, X.
作者单位	1.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, 62 Wencui Rd, Shenyang 110016, Peoples R China 3.Nanchang Hangkong Univ, Sch Mat Sci & Engn, 696 Fenghenan Ave, Nanchang 330063, Jiangxi, Peoples R China 4.Nanchang Hangkong Univ, Jiangxi Prov Engn Res Ctr Surface Technol Aeronau, 696 Fenghenan Ave, Nanchang 330063, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Khan, A.,Dong, Z.,Peng, X.. Accelerated phase transformation of thermally grown alumina on Ni2Al3: Effect of dispersion of hcp-oxides with various content and particle size and chemistry[J]. SURFACE & COATINGS TECHNOLOGY,2020,394:11.
APA	Khan, A.,Dong, Z.,&Peng, X..(2020).Accelerated phase transformation of thermally grown alumina on Ni2Al3: Effect of dispersion of hcp-oxides with various content and particle size and chemistry.SURFACE & COATINGS TECHNOLOGY,394,11.
MLA	Khan, A.,et al."Accelerated phase transformation of thermally grown alumina on Ni2Al3: Effect of dispersion of hcp-oxides with various content and particle size and chemistry".SURFACE & COATINGS TECHNOLOGY 394(2020):11.