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Effect of casting speed on microstructure, corrosion behaviour and in vivo bone reaction of Mg-rare earth alloys
Wang, HaiJian1; Wang, HaiWei2,3; Kumazawa, Takashi1; Ju, DongYing1,4,5; Cao, JianTing1
Corresponding AuthorJu, DongYing(dyju@sit.ac.jp)
2020-12-22
Source PublicationSCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN1674-7321
Pages10
AbstractIn this study, two casting speeds of 10 and 30 r/min were used in vertical twin-roll casting (TRC) to obtain Mg-rare earth (Mg-RE) alloys, and their microstructures, corrosion behaviours and in vivo bone reactions were investigated in detail. The results indicated that the roll-castings of TRC-30 r/min exhibited a finer grain size and higher volume fraction of non-crystallization than those in castings of TRC-10 r/min. Moreover, the results of electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization indicated that the castings of TRC-30 r/min displayed a higher corrosion resistance compared with those in the castings of TRC-10 r/min. Animal tests showed that a higher degree of newly formed bone tissues was achieved by implants of TRC-30 r/min. Additionally, in vivo tests displayed that degradation properties of the TRC-30-r/min implants were better than those of the TRC-10-r/min implants; furthermore, the degradation layer was a two-layer structure, and P and Ca were enriched in the outer degradation layer. In summary, these findings elucidated that casting speed has a substantial effect on the microstructure and degradation property of Mg-based implants, and the degradation property performs better with increased casting speed.
KeywordMg-RE alloys microstructure corrosion resistance in vivo
Funding OrganizationHi-Tech Research Center and Animal Experiment Project
DOI10.1007/s11431-020-1689-3
Indexed BySCI
Language英语
Funding ProjectHi-Tech Research Center and Animal Experiment Project[2019-5]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Multidisciplinary ; Materials Science, Multidisciplinary
WOS IDWOS:000605549200001
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158952
Collection中国科学院金属研究所
Corresponding AuthorJu, DongYing
Affiliation1.Saitama Inst Technol, Grad Sch Engn, Dept Elect Engn, Fukaya 3690293, Japan
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
4.Univ Sci & Technol Liaoning, Sch Met & Mat, Anshan 114051, Peoples R China
5.Ningbo Haizhi Inst Mat Ind Innovat, Ningbo 315000, Peoples R China
Recommended Citation
GB/T 7714
Wang, HaiJian,Wang, HaiWei,Kumazawa, Takashi,et al. Effect of casting speed on microstructure, corrosion behaviour and in vivo bone reaction of Mg-rare earth alloys[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2020:10.
APA Wang, HaiJian,Wang, HaiWei,Kumazawa, Takashi,Ju, DongYing,&Cao, JianTing.(2020).Effect of casting speed on microstructure, corrosion behaviour and in vivo bone reaction of Mg-rare earth alloys.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,10.
MLA Wang, HaiJian,et al."Effect of casting speed on microstructure, corrosion behaviour and in vivo bone reaction of Mg-rare earth alloys".SCIENCE CHINA-TECHNOLOGICAL SCIENCES (2020):10.
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