Surface Functionalization of Biomedical Ti-6Al-7Nb Alloy by Liquid Metal Dealloying

被引：22

作者：

Okulov, Ilya Vladimirovich ^{[1
,2
,3
,4
]}

Joo, Soo-Hyun ^{[1
]}

Okulov, Artem Vladimirovich ^{[5
]}

Volegov, Alexey Sergeevich ^{[4
]}

Luthringer, Berengere ^{[6
]}

Willumeit-Roemer, Regine ^{[6
]}

Zhang, Laichang ^{[7
]}

Maedler, Lutz ^{[2
,3
]}

Eckert, Jurgen ^{[8
,9
,10
]}

Kato, Hidemi ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Katahira 2-1-1, Sendai, Miyagi 9808577, Japan

[2] Univ Bremen, Badgasteiner Str 1, D-28359 Bremen, Germany

[3] Leibniz Inst Mat Engn IWT, Badgasteiner Str 3, D-28359 Bremen, Germany

[4] Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg 620000, Russia

[5] Helmholtz Zentrum Geesthacht, Div Mat Mech, Inst Mat Res, D-21502 Geesthacht, Germany

[6] Helmholtz Zentrum Geesthacht, Div Metall Biomat, Inst Mat Res, D-21502 Geesthacht, Germany

[7] Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Perth, WA 6027, Australia

[8] Austrian Acad Sci, Erich Schmid Inst Mat Phys, Jahnstr 12, A-8700 Leoben, Austria

[9] Univ Leoben, Chair Mat Phys, Dept Mat Sci, Jahnstr 12, A-8700 Leoben, Austria

[10] Natl Univ Sci & Technol MISiS, LeninskyProsp 4, Moscow 119049, Russia

来源：

NANOMATERIALS | 2020年 / 10卷 / 08期

基金：

欧洲研究理事会;

关键词：

surface functionalization; porous surface; biomaterial; dealloying; biocompatibility; MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; TITANIUM-ALLOYS; LOW MODULUS; MICROSTRUCTURE; TINB; OPTIMIZATION; COMPOSITE; EVOLUTION; BONE;

D O I：

10.3390/nano10081479

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Surface functionalization is an effective approach to change the surface properties of a material to achieve a specific goal such as improving the biocompatibility of the material. Here, the surface of the commercial biomedical Ti-6Al-7Nb alloy was functionalized through synthesizing of a porous surface layer by liquid metal dealloying (LMD). During LMD, the Ti-6Al-7Nb alloy is immersed in liquid magnesium (Mg) and both materials react with each other. Particularly, aluminum (Al) is selectively dissolved from the Ti-6Al-7Nb alloy into liquid Mg while titanium (Ti) and niobium (Nb) diffuse along the metal/liquid interface to form a porous structure. We demonstrate that the porous surface layer in the Ti-6Al-7Nb alloy can be successfully tailored by LMD. Furthermore, the concentration of harmful Al in this porous layer is reduced by about 48% (from 5.62 +/- 0.11 wt.% to 2.95 +/- 0.05 wt.%) after 30 min of dealloying at 1150 K. The properties of the porous layer (e.g., layer thickness) can be tuned by varying the dealloying conditions. In-vitro tests suggest improved bone formation on the functionalized porous surface of the Ti-6Al-7Nb alloy.

引用

页码：1 / 12

页数：12

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