Exploration of Rare-Earth Element Sc to Enhance Microstructure, Mechanical Properties and Corrosion Resistance of Zr-8.8Si Biomedical Alloy

Fu, Yaokun1,2; Luo, Liying1,2; Wei, Chengxia1,2,3; Zhan, Yongzhong1,2

2022

10.1007/s42235-021-00139-z

Journal of Bionic Engineering   影响因子和分区

1672-6529

2543-2141

The main mechanism of rare-earth element Sc on the microstructure and properties of Zr-8.8Si biomaterial alloy was explored. The novel Zr-8.8Si-xSc (x = 0, 5, 10 and 15 at. %) alloys were prepared by electric arc smelting with Ar protection. The microstructural and mechanical properties as well as electrochemical corrosion and tribological behaviors in artificial saliva solution of the Zr-8.8Si-xSc alloys were systematically studied. The results show that the Zr-8.8Si-xSc alloys only consist of two-phase alpha-Zr and Zr3Si, Sc dissolve in alpha-Zr matrix to form Zr-Sc solid solution. The addition of Sc is conducive to refine microstructure, and reduce micro-pores of Zr-8.8Si alloy which lead to higher Young's modulus, compressive strength and micro-hardness. Among them, the highest value of Young's modulus is 31.5 GPa, still at a low level in biomedical alloy. The promotion of corrosion resistance can be attributed to the addition of Sc which can accelerate the formation of passive film, slow down the appearance of pitting and reduce the accumulation of corrosion products in surface. Under the condition of sliding wear test with artificial saliva solution, compared with Zr-8.8Si-0Sc alloy, the wear loss of samples with Sc is greatly decreased, and wear resistance is increased with increasing content of Sc. The experimental results indicate that the combination of good mechanical properties, corrosion resistance and tribological properties of Zr-8.8Si-(5, 10 and 15 at. %) Sc alloys was much better than Zr-8.8Si-0Sc alloy. Among them, the comprehensive property of Zr-8.8Si-10Sc alloy is preferable in this work.

Zr-8 8Si-xSc alloys Biomedical alloy Microstructure Mechanical properties Corrosion resistance Tribological properties

SCI ; EI

英语

其他

Guangxi Natural Science Foundation["2018JJD160006","2019JJA160077"] ; National Natural Science Foundation of China[51761002] ; National Key R&D Program of China[2016YFB0301400] ; Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials[GXYSSF1807]

Engineering ; Materials Science ; Robotics

Engineering, Multidisciplinary ; Materials Science, Biomaterials ; Robotics

WOS:000738505700001

SPRINGER SINGAPORE PTE LTD

20220211434665

Compressive strength ; Corrosion resistant alloys ; Elastic moduli ; Electric arcs ; Electrochemical corrosion ; Microhardness ; Microstructure ; Rare earth elements ; Rare earths ; Silicon alloys ; Wear of materials ; Wear resistance

Metallurgy and Metallography:531 ; Metals Corrosion:539.1 ; Rare Earth Metals:547.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electricity: Basic Concepts and Phenomena:701.1 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

Web of Science

1.Guangxi Univ, Sch Resources Environm & Mat, Nanning 530004, Peoples R China
2.Guangxi Univ, Guangxi Key Lab Proc Nonferrous Met & Featured Ma, Nanning 530004, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518000, Peoples R China

Fu, Yaokun,Luo, Liying,Wei, Chengxia,et al. Exploration of Rare-Earth Element Sc to Enhance Microstructure, Mechanical Properties and Corrosion Resistance of Zr-8.8Si Biomedical Alloy[J]. Journal of Bionic Engineering,2022,19:530-546.

Fu, Yaokun,Luo, Liying,Wei, Chengxia,&Zhan, Yongzhong.(2022).Exploration of Rare-Earth Element Sc to Enhance Microstructure, Mechanical Properties and Corrosion Resistance of Zr-8.8Si Biomedical Alloy.Journal of Bionic Engineering,19,530-546.

Fu, Yaokun,et al."Exploration of Rare-Earth Element Sc to Enhance Microstructure, Mechanical Properties and Corrosion Resistance of Zr-8.8Si Biomedical Alloy".Journal of Bionic Engineering 19(2022):530-546.