Prototyping of composite products with bone-mimetic mechanical functions based on novel functionalization concept

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630306
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Structural/Functional materials
• Research Institution: Osaka University
• Principal Investigator: NAKANO Takayoshi 大阪大学, 工学(系)研究科(研究院), 教授 (30243182)
• Co-Investigator(Kenkyū-buntansha): ISHIMOTO Takuya 大阪大学, 工学研究科, 講師 (50508835) ; TODAI Mitsuharu 大阪大学, 工学研究科, 助教 (10610800)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 電子ビーム積層造形法 / 付加製造 / 低ヤング率 / エネルギー吸収性 / 粉末部力学機能化 / ネック形成 / 骨代替材料

Outline of Final Research Achievements

In an electron beam melting, one of powder bed fusion methods, we successfully functionalized the unmelted powder that have usually been removed and discarded. The unmelted powder was heat-treated for neck formation between powder particles instead of being discarded. As a result, a novel, hierarchical, porous composite from a single material composed of necked powder and melted solid was created. The composite demonstrates low Young’s modulus and excellent energy absorption capacity, both of which are bone-mimetic and necessary for use in orthopedic applications. In this study, we achieved the implant material that behaves as if it were natural bone even though the implant was made up of metallic materials.

Free Research Field

生体材料学、材料塑性学