| METALS AND METAL MATRIX COMPOSITES |
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| Effect of Cu Contents on Microstructure and Properties of Biodegradable Zn-Cu Alloys |
| LI Qiang1, ZHAO Te1, WEI Leishan1, CHEN Minghua1, SUN Xudong2
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1 College of Materials Science & Engineering, Liaoning University of Technology, Jinzhou 121001, China
2 School of Materials Science & Engineering, Northeastern University, Shenyang 110004, China |
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Abstract Biodegradable Zn-Cu alloys were prepared by powder metallurgy method with Zn and Cu powder as initial materials. The influence of Cu contents on the microstructure, phase composition, compressive strength, corrosion resistance and antibacterial properties of biodegradable Zn-Cu alloys were studied. The results show that Zn-Cu alloys have higher sintering density when adding Cu elements. The Zn-xCu alloys are composed of η phase with the Cu content of 0.5%—2.5%, but the Zn-3.0Cu alloys are composed of η and ε phases with the Cu content of 3.0%. The compressive strength of sintered Zn-xCu alloys (x=0%-3%) increases form 93.6 MPa to 170.3 MPa. The self-corrosion potentials of the Zn-2.5Cu alloys comes to the maximum of -1.048 5 V, but the passivation current density and stable corrosion rate come to the minmum of 4.630 4×10-5 A·cm-2 and 0.076 mm/year, respectively. Compared with pure Zn samples, the inhibition zone size of Zn-2.5Cu sample comes to the maximum of (29.8±0.3) mm and the absorption value of Zn-2.5Cu is the lowest of Abs=0.20 in the Staphylococcus aureus culture medium, which shows the antimicrobial effect of Zn-2.5Cu alloy to S. aureus is better.
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Published: 10 May 2021
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| Fund:National Natural Science Foundation of China (51805236), and Basic Research Project of Liaoning Provincial Department of Education (JJL201915407). |
| About author:: Qiang Li received his Ph. D. degree in materials from Northeastern University. He is currently a professor in Liaoning University of Technology. His research has focused on biomedical materials and surface modification technology. |
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1 Hajo Haase, Lothar Rin. Biofactors,2014,40(1),27.
2 Kessels J E, Wessels I, Haase H, et al. Journal of Trace Elements in Medicine & Biology Organ of the Society for Minerals & Trace Elements,2016,37,125.
3 Yang P, Wang Y, Macfarlan T S. Trends in Genetics,2017,33(11),871.
4 Qiao Y, Zhang W, Tian P, et al. Biomaterials,2014,35(25),6882.
5 Bowen P K, Drelich J, Goldman J. Advanced Materials,2013,25(18),2577.
6 Shi Z Z, Yu J, Liu X F, et al. Journal of Materials Science & Technology,2018,34(6),1008.
7 Yang H T, Jia B, Zhang Z H, et al. Nature Communications,2020,11,401.
8 Jin S J, Wang T M, Ren L, et al. Progress in Modern Biomedicine,2018,18(16),3196(in Chinese).
靳淑静,王同敏,任玲,等.现代生物医学进展,2018,18(16),3196.
9 ISO10993-12-2007. Switzerland: ISO,2007.
10 Ding X M, Zhou S H, Ye B, et al. Materials Reports A: Review Papers,2017,31(2),38.
丁学明,周素洪,叶兵,等.材料导报:综述篇,2017,31(2),38.
11 Wang Z, Yang J, Li J J. Chinese Journal of Tissue Engineering Research,2018,22(22),3451(in Chinese).
王湛,杨军,李建军.中国组织工程研究,2018,22(22),3451.
12 Campoccia D, Montanaro L, Arciola C R. Biomaterials,2006,27(11),2331.
13 Ma Z. Preparation and properties of a new antibacterial titanium alloy containing copper. Ph.D. Thesis, Dalian University of Technology, China,2015(in Chinese).
马政.新型含铜抗菌钛合金的制备与性能研究.博士学位论文,大连.
理工大学,2015. |
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2021, Vol. 35 
