Development of Y2O3 Dispersion-Strengthened Copper Alloy by Sol-Gel Method

doi:10.3390/ma15072416

	Development of Y2O3 Dispersion-Strengthened Copper Alloy by Sol-Gel Method
	Ke, Jiangang 1,2; Xie, Zhuoming 1; Liu, Rui 1; Jing, Ke 1,2; Cheng, Xiang 1,2; Wang, Hui 1,2; Wang, Xianping 1; Wu, Xuebang 1; Fang, Qianfeng 1,2; Liu, Changsong 1
刊名	MATERIALS
	2022-04-01
卷号	15
关键词	copper sol-gel mechanical properties thermal stability thermal conductivity
DOI	10.3390/ma15072416
通讯作者	Liu, Rui(liurui@issp.ac.cn) ; Fang, Qianfeng(qffang@issp.ac.cn)
英文摘要	In this study, oxide dispersion-strengthened Cu alloy with a Y2O3 content of 1 wt.% was fabricated through citric acid sol-gel synthesis and spark plasma sintering (SPS). The citric acid sol-gel method provides molecular mixing for the preparation of precursor powders, which produces nanoscale and uniformly distributed Y2O3 particles in an ultrafine-grained Cu matrix. The effects of nanoscale Y2O3 particles on the microstructure, mechanical properties and thermal conductivity of the Cu-1wt.%Y2O3 alloy were investigated. The average grain size of the Cu-1wt.%Y2O3 alloy is 0.42 mu m, while the average particle size of Y2O3 is 16.4 nm. The unique microstructure provides excellent mechanical properties with a tensile strength of 572 MPa and a total elongation of 6.4%. After annealing at 800 degrees C for 1 h, the strength of the alloy does not decrease obviously, showing excellent thermal stability. The thermal conductivity of Cu-1wt.%Y2O3 alloy is about 308 Wm(-1)K(-1) at room temperature and it decreases with increasing temperature. The refined grain size, high strength and excellent thermal stability of Cu-1wt.%Y2O3 alloys can be ascribed to the pinning effects of nanoscale Y2O3 particles dispersed in the Cu matrix. The Cu-Y2O3 alloys with high strength and high thermal conductivity have potential applications in high thermal load components of fusion reactors.
资助项目	National Key Research and Development Program of China[2019YFE03120001] ; National Key Research and Development Program of China[2017YFE0302400] ; National Key Research and Development Program of China[2017YFA0402800] ; National Natural Science Foundation of China[51971213] ; National Natural Science Foundation of China[52173303] ; National Natural Science Foundation of China[52171084]
WOS关键词	PLASMA-FACING COMPONENTS ; HEAT SINK ; MECHANICAL-PROPERTIES ; COMPOSITES ; MICROSTRUCTURE ; FABRICATION ; SELECTION ; DIVERTOR
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000781277500001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128727]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu, Rui; Fang, Qianfeng
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Ke, Jiangang,Xie, Zhuoming,Liu, Rui,et al. Development of Y2O3 Dispersion-Strengthened Copper Alloy by Sol-Gel Method[J]. MATERIALS,2022,15.
APA	Ke, Jiangang.,Xie, Zhuoming.,Liu, Rui.,Jing, Ke.,Cheng, Xiang.,...&Liu, Changsong.(2022).Development of Y2O3 Dispersion-Strengthened Copper Alloy by Sol-Gel Method.MATERIALS,15.
MLA	Ke, Jiangang,et al."Development of Y2O3 Dispersion-Strengthened Copper Alloy by Sol-Gel Method".MATERIALS 15(2022).