Influence of Pre-oxidation on the Hot Corrosion of DZ68 Superalloy in the Mixture of Na2SO4-NaCl

IMR OpenIR

	Influence of Pre-oxidation on the Hot Corrosion of DZ68 Superalloy in the Mixture of Na2SO4-NaCl
	Liu, Enze; Zheng, Zhi; Guan, Xiurong; Tong, Jian; Ning, Likui; Yu, Yongsi
通讯作者	Liu, Enze()
	2010-10-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	26 期号:10 页码:895-899
摘要	DZ68 alloy is a new Ni-base directionally solidified superalloy for the blade of advanced turbine engine with high ratio of thrust-mass In order to investigate the influence of pre-oxidation on the hot corrosion resistance of DZ68 alloy pre-oxidation treatment was conducted at 950 degrees C in air for 20 h A mixture of 75% Na2SO4+25% NaCl (in mass fraction) was used for hot corrosion study at 900 degrees C The microstructure of specimens was investigated by using a scanning electron microscope (SEM) equipped with an energy dispersive spectroscopy (EDS) The compositions of the corroded specimens were determined by X-ray diffraction (XRD) After pre-oxidation at 950 degrees C in air for 20 h a protective scale consisting of Cr2O3 Al2O3 NiO NiCr2O4 and Ni2Ti4O formed on the DZ68 superalloy surface The pre-oxidation treatment improved the initial incubation stage of the alloy in the mixture of 75% Na2SO4+25% NaCl melts at 900 degrees C The oxide layer degraded gradually with increasing the time of hot corrosion Once the oxide layer was damaged the corrosion rate would increase rapidly accompanied by obvious spoliation of the corrosion products At 900 degrees C the pre-oxidation treatment could not inhibit the accelerated hot corrosion of DZ68 in the mixture of 75% Na2SO4+25% NaCl melts with a high corrosion rate
关键词	DZ68 superalloy Pre-oxidation Hot corrosion
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000284188600006
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：18[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/321006/101513
专题	中国科学院金属研究所
通讯作者	Liu, Enze
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Enze,Zheng, Zhi,Guan, Xiurong,et al. Influence of Pre-oxidation on the Hot Corrosion of DZ68 Superalloy in the Mixture of Na2SO4-NaCl[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2010,26(10):895-899.
APA	Liu, Enze,Zheng, Zhi,Guan, Xiurong,Tong, Jian,Ning, Likui,&Yu, Yongsi.(2010).Influence of Pre-oxidation on the Hot Corrosion of DZ68 Superalloy in the Mixture of Na2SO4-NaCl.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,26(10),895-899.
MLA	Liu, Enze,et al."Influence of Pre-oxidation on the Hot Corrosion of DZ68 Superalloy in the Mixture of Na2SO4-NaCl".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 26.10(2010):895-899.