New Zr–25Ti–xMo alloys for dental implant application: Properties characterization and surface analysis

Wei，Chengxia1,2,3; Luo，Liying1,2; Wu，Zhangxi1,2; Zhang，Jiakai1,2; Su，Shi1,2; Zhan，Yongzhong1,2

2020-11-01

10.1016/j.jmbbm.2020.104017

Journal of the Mechanical Behavior of Biomedical Materials   影响因子和分区

1751-6161

1878-0180

A series of Zr–25Ti–xMo (x = 0, 2.5, 5, 7.5, 10 and 12.5 wt %) as-cast alloys were designed to advance a new-brand Zr-based alloy with low Young's elastic, moderate compression strength, superior corrosion resistance and good wear behavior for the application of dental implant materials. In the present study, the microstructures of the alloys were evaluated by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The microhardness and uniaxial compression measurement were performed to evaluate the mechanical properties of the alloys. The electrochemical behaviors of the alloys was investigated in artificial saliva solution. The friction and wear performances of the Zr–25Ti–xMo alloys were examined by pin-on-disk under the load of 15 N. The results shows that the crystalline structure transforms from hexagonal close-pack (α phase, x = 0 wt %) to body-centered cubic structure (β phase, 5 ≤ x ≤ 12.5 wt %) through a α + β dual-phase region (x = 2.5 wt %). They exhibits excellent mechanical properties with low elastic modulus (from 17.7 to 24.4 GPa) and moderate compression strength (from 1154.4 to 1310.8 MPa). The Zr–25Ti–xMo alloys possess good corrosion resistance due to the formation of a protective passive film consisting mainly of ZrO, TiO and minor MoO. Especially, the polarization curves demonstrates that the Zr–25Ti–7.5Mo alloy has a wider passive region than the other five alloys and it possesses the lower corrosion current density and corrosion rate. Furthermore, this alloy exhibits good abrasion resistance with the lowest coefficients of friction and volume wear loss. Thus, the Zr–25Ti–7.5Mo alloy has a combination of excellent mechanical properties such as low elastic modulus, moderate yield strength and the compression strength, good electrochemical stability and well wear resistance, it is considered a promising candidate for orthopedic materials as dental implant.

Corrosion behavior Friction and wear Low elastic modulus Zr–Ti–Mo alloys

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

Engineering, Biomedical ; Materials Science, Biomaterials

WOS:000575371800002

ELSEVIER

20203409062814

Corrosion protection ; X ray photoelectron spectroscopy ; Zircaloy ; Zirconia ; Corrosive effects ; Elastic moduli ; Friction ; Titanium dioxide ; Wear resistance ; Scanning electron microscopy ; Metal implants ; Surface analysis ; Compressive strength ; Molybdenum alloys ; Lunar surface analysis ; Wear of materials ; Corrosion resistant alloys ; Corrosion rate ; Molybdenum oxide

Prosthetics:462.4 ; Metallurgy and Metallography:531 ; Metals Corrosion:539.1 ; Corrosion Protection:539.2 ; Molybdenum and Alloys:543.3 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

2-s2.0-85089435127

Scopus

1.School of Resources,Environment and Materials,Guangxi University,Nanning,530004,China
2.Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials,Guangxi University,Nanning,530004,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518000,China

Wei，Chengxia,Luo，Liying,Wu，Zhangxi,等. New Zr–25Ti–xMo alloys for dental implant application: Properties characterization and surface analysis[J]. Journal of the Mechanical Behavior of Biomedical Materials,2020,111.

Wei，Chengxia,Luo，Liying,Wu，Zhangxi,Zhang，Jiakai,Su，Shi,&Zhan，Yongzhong.(2020).New Zr–25Ti–xMo alloys for dental implant application: Properties characterization and surface analysis.Journal of the Mechanical Behavior of Biomedical Materials,111.

Wei，Chengxia,et al."New Zr–25Ti–xMo alloys for dental implant application: Properties characterization and surface analysis".Journal of the Mechanical Behavior of Biomedical Materials 111(2020).