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

IMR OpenIR

	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
通讯作者	Peng, X.(xpeng@imr.ac.cn)
	2020-07-25
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	394 页码:11
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.
关键词	Oxide dispersion Electrodeposition Aluminide coating Phase transformation Raman spectroscopy Oxidation
资助者	National Natural Science Foundation of China (NSFC)
DOI	10.1016/j.surfcoat.2020.125861
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000542100500038
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：14[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/321006/140410
专题	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.