Oxidation behavior of high Hf nickel-based superalloy in air at 900,1000 and 1100°C

IMR OpenIR

	Oxidation behavior of high Hf nickel-based superalloy in air at 900,1000 and 1100°C
	Xiao Jiuhan 1; Xiong Ying 2; Wang Li 1; Jiang Xiangwei 1; Wang Dong 1; Li Kaiwen 1; Dong Jiasheng 1; Lou Langhong 1
	2021
发表期刊	INTERNATIONAL JOURNAL OF MINERALS, METALLURGY AND MATERIALS
ISSN	1674-4799
卷号	28 期号:12 页码:1957-1965
摘要	To investigate the oxidation behavior of a nickel-based superalloy with high hafnium content(1.34wt%),this study performed isothermal oxidation tests at 900,1000,and 1100°C for up to 200 h. X-ray diffraction and scanning electron microscopy with energy-dispersive X-ray spectroscopy were applied to study the oxidation behavior. The weight gain of the high Hf nickel-based superalloy exhibited a parabolalike curve,and no spallation of the oxide scale was observed during the oxidation tests. The alloy presented excellent oxidation resistance,and no HfO_2 was observed in the oxide scale at 900°C. With the increase of the oxidation temperature to 1000°C,HfO_2 particles formed in the spinel phases of the scale,and peg-like HfO_2 was observed within and beneath the inner layer of Al_2O_3 after 200 h. As the oxidation temperature rose to 1100°C,peg-like HfO_2 was observed at the early stage of the oxidation test(within 25 h). The formation mechanism of HfO_2 and its impact on oxidation resistance were investigated based on the analysis of the oxidation test results at different temperatures.
关键词	superalloy hafnium high-temperature oxidation diffusion
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179657
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.China National South Aviation Industry Company Limited
推荐引用方式 GB/T 7714	Xiao Jiuhan,Xiong Ying,Wang Li,et al. Oxidation behavior of high Hf nickel-based superalloy in air at 900,1000 and 1100°C[J]. INTERNATIONAL JOURNAL OF MINERALS, METALLURGY AND MATERIALS,2021,28(12):1957-1965.
APA	Xiao Jiuhan.,Xiong Ying.,Wang Li.,Jiang Xiangwei.,Wang Dong.,...&Lou Langhong.(2021).Oxidation behavior of high Hf nickel-based superalloy in air at 900,1000 and 1100°C.INTERNATIONAL JOURNAL OF MINERALS, METALLURGY AND MATERIALS,28(12),1957-1965.
MLA	Xiao Jiuhan,et al."Oxidation behavior of high Hf nickel-based superalloy in air at 900,1000 and 1100°C".INTERNATIONAL JOURNAL OF MINERALS, METALLURGY AND MATERIALS 28.12(2021):1957-1965.