Hot Corrosion Behavior of SiO2-Al2O3-Glass Composite Coating on Ti-47Al-2Cr-2Nb Alloy: Diffusion Barrier for S and Cl

doi:10.1007/s40195-018-0842-1

IMR OpenIR

	Hot Corrosion Behavior of SiO2-Al2O3-Glass Composite Coating on Ti-47Al-2Cr-2Nb Alloy: Diffusion Barrier for S and Cl
	Li, Wen-Bo 1; Liu, Lan-Lan 1; Yang, Ying-Fei 2; Zhu, Sheng-Long 3; Wang, Fu-Hui 3
通讯作者	Yang, Ying-Fei(yfyang@jnu.edu.cn)
	2019-05-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	32 期号:5 页码:599-606
摘要	Type I hot corrosion behavior of SiO2-Al2O3-glass composite coating based on Ti-47Al-2Cr-2Nb substrate was investigated in the mixture salt of 25wt%NaCl+75wt%Na2SO4 at 850 degrees C. The results showed that there was a bidirectional ion exchange between composite coating and the film of mixed salts, and the sodium ion in the molten salts penetrated into the glass matrix of composite coating, while the potassium ion in the glass matrix dissolved into the molten salts. A decrease in hot corrosion rate was achieved for the coated alloy in comparison with the bared substrate due to the composite coating acting as a diffusion barrier to sulfur and chlorine and preventing the molten salts from diffusing to the coating/alloy interface during the hot corrosion exposure. Additionally, the composite coating decreased the oxygen partial pressure at the coating/alloy interface and promoted the selective oxidation of Al to form a protective Al2O3 layer.
关键词	Corrosion Composite coating Ti-47Al-2Cr-2Nb alloy Diffusion
资助者	National Natural Science Foundation of China ; National High Technology Research and Development Program of China (863 Program)
DOI	10.1007/s40195-018-0842-1
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51201171] ; National High Technology Research and Development Program of China (863 Program)[2012AA03A512]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000463780700007
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
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/321006/132945
专题	中国科学院金属研究所
通讯作者	Yang, Ying-Fei
作者单位	1.Hunan Elect Power Co Ltd, Changsha, Hunan, Peoples R China 2.Jinan Univ, Inst Adv Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Guangdong, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Li, Wen-Bo,Liu, Lan-Lan,Yang, Ying-Fei,et al. Hot Corrosion Behavior of SiO2-Al2O3-Glass Composite Coating on Ti-47Al-2Cr-2Nb Alloy: Diffusion Barrier for S and Cl[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(5):599-606.
APA	Li, Wen-Bo,Liu, Lan-Lan,Yang, Ying-Fei,Zhu, Sheng-Long,&Wang, Fu-Hui.(2019).Hot Corrosion Behavior of SiO2-Al2O3-Glass Composite Coating on Ti-47Al-2Cr-2Nb Alloy: Diffusion Barrier for S and Cl.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(5),599-606.
MLA	Li, Wen-Bo,et al."Hot Corrosion Behavior of SiO2-Al2O3-Glass Composite Coating on Ti-47Al-2Cr-2Nb Alloy: Diffusion Barrier for S and Cl".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.5(2019):599-606.