Mechanical properties and biological responses of ultrafine-grained pure titanium fabricated by multi-directional forging

被引：24

作者：

Ito, Yusuke ^{[1
]}

Hoshi, Noriyuki ^{[1
]}

Hayakawa, Tohru ^{[2
]}

Ohkubo, Chikahiro ^{[3
]}

Miura, Hiromi ^{[4
]}

Kimoto, Katsuhiko ^{[1
]}

机构：

[1] Kanagawa Dent Univ, Grad Sch Dent, Dept Oral Interdisciplinary Med Prosthodont & Ora, 82 Inaoka Cho, Yokosuka, Kanagawa 2388580, Japan

[2] Tsurumi Univ, Sch Dent Med, Dept Dent Engn, Tsurumi Ku, 2-1-3 Tsurumi, Yokohama, Kanagawa 2308501, Japan

[3] Tsurumi Univ, Sch Dent Med, Dept Removable Prosthodont, Tsurumi Ku, 2-1-3 Tsurumi, Yokohama, Kanagawa 2308501, Japan

[4] Toyohashi Univ Technol, Dept Mech Engn, 1-1 Hibarigaoka,Tempaku Cho, Toyohashi, Aichi 4418580, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2019年 / 245卷

关键词：

Multi-directional forging; Titanium; Sulfuric acid treatment; Cell proliferation; Ultrafine grains; BONE INTEGRATION; ALLOYS; ROUGHNESS; EVOLUTION; IMPLANTS; SURFACES; BEHAVIOR; SLA;

D O I：

10.1016/j.mseb.2019.05.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We aimed to investigate strengthening of pure titanium by ultra-grain refinement using multi-directional forging and to examine the biocompatibility after sulfuric acid treatment. Commercial titanium grade 2 was multi-directional forged to large cumulative strain to obtain homogeneous ultrafine-grained structure. The evolved microstructure of the obtained material was equiaxed and ultrafine-grained with high dislocation density. Average grain size was evaluated to be approximately 100 nm. The ultrafine-grained titanium showed higher tensile strength, Vickers hardness and a lower elastic modulus compared to conventional pure titanium grade 2. The surface features of the multi-directional forged titanium after acid treatments were characterized by a roughness of 1 mu m composed of equiaxed fine dimples with fractal structure and a hydrophilicity of 15. Cell proliferation on multi-directional forged titanium was significantly promoted than on conventional titanium. The above results demonstrated the high potential of multi-directional forged titanium as a superior biocompatible implant material.

引用

页码：30 / 36

页数：7

共 56 条

[1] The effect of ultraviolet functionalization of titanium on integration with bone [J].