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Development of Y2O3 Dispersion-Strengthened Copper Alloy by Sol-Gel Method
Ke, Jiangang1,2; Xie, Zhuoming1; Liu, Rui1; Jing, Ke1,2; Cheng, Xiang1,2; Wang, Hui1,2; Wang, Xianping1; Wu, Xuebang1; Fang, Qianfeng1,2; Liu, Changsong1
2022-04-01
Source PublicationMATERIALS
Corresponding AuthorLiu, Rui(liurui@issp.ac.cn) ; Fang, Qianfeng(qffang@issp.ac.cn)
AbstractIn 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.
Keywordcopper sol-gel mechanical properties thermal stability thermal conductivity
DOI10.3390/ma15072416
WOS KeywordPLASMA-FACING COMPONENTS ; HEAT SINK ; MECHANICAL-PROPERTIES ; COMPOSITES ; MICROSTRUCTURE ; FABRICATION ; SELECTION ; DIVERTOR
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000781277500001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/128728
Collection中国科学院合肥物质科学研究院
Corresponding AuthorLiu, Rui; Fang, Qianfeng
Affiliation1.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
Recommended Citation
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).
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