Development of low elastic modulus titanium alloys forbone substitution

低弹性模量骨替代钛合金的研制

• 批准号: 22592187
• 负责人: SHIRAISHI Takanobu
• 金额: $ 2.58万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22592187/
• 关键词: 生体材料; チタン合金; ヤング率; ビッカース硬さ; 結晶構造; 密度; 耐食性; 弾性率; 剛性率

It is important for load-bearing metallic biomaterials to satisfy various requisites, such as high mechanical strength, high corrosion resistance and low elastic moduli similar to those of a living cortical bone. In the present study, (Ti-60Zr)-X and (Ti-70Zr)-X (X = 1 at.% Pd or Pt) ternary alloys were prepared and their density, Young’s modulus, shear modulus, Vickers hardness and crystal structure were analyzed. The addition of a small amount of noble metals (Pd, Pt) markedly increased Young’s modulus, shear modulus and Vickers hardness. Density also considerably increased with the addition of Pd and Pt. X-ray diffraction study showed that the above mentioned significant change in mechanical properties were caused by formation of a ω-phase in addition to α-phase in the as-cast alloy ingots. In summary, the alloying addition of a small amount of noble metals (Pd, Pt) to Ti-Zr alloys is not recommended from the viewpoint of the development of low elastic modulus biomedical materials for bone substitution.

要满足各种必需品，例如高机械强度，高腐蚀性和低弹性模量与活皮层骨相似，这一点很重要。在本研究中，（TI-60ZR）-X和（TI-70ZR）-X（x = 1 at。％pd或pt）三元合金制备了密度，分析了它们的密度，Young的模量，剪切模量，Vickers硬度和晶体结构。添加少量高贵金属（PD，PT）显着增加了Young的模量，剪切模量和Vickers硬度。随着PD和PT的添加，密度也大大增加。 X射线衍射研究表明，上述机械性能的显着变化是由AS-Cast-as-as-Cally Ingot中的α-相形成外的。总而言之，从低弹性模量生物医学材料的开发来看，不建议将少量贵金属（PD，PT）合金添加到TI-ZR合金中。

项目成果

研磨粗さがhybrid型コンポジットレジンビューティフィルIIの色彩と光沢に及ぼす影響

抛光粗糙度对杂化复合树脂Beautyfil II颜色和光泽的影响

• 发表时间: 2010
• 作者: 細矢由美子;白石孝信
• 通讯作者: 白石孝信

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