Electron beam melting protocol for a Ti-6A1 4V open-cell microlattice material with isoelastic properties

具有等弹性的 Ti-6A1 4V 开孔微晶格材料的电子束熔化方案

• 批准号: 447046-2013
• 负责人: Pasini, Damiano
• 金额: $ 9.04万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=536674
• 关键词: Electron; beam; melting; protocol; Ti

Lack of mechanical compatibility is universally recognized as a major bottle neck for current bone replacement implant materials. We have developed a material with a tailored microlattice that is isoelastic, i.e. stiffness properties are balanced and the strain energy mechanically matches that of the host bone tissue [1-3]. The material is a graded porous Ti-6Al-4V with optimized microarchitecture to create minute structural details. We have successfully demonstrated that Electron Beam Melting (EBM) can be used to build Ti-6Al-4V graded microlattices [1, 4, 5]. However, Scanning Electron Microscopy (SEM) has shown a limitation in the EBM process: a morphology mismatch has been observed between as-designed and as-built Ti-6Al-4V microlattices.

缺乏机械相容性被公认为是当前骨替代植入材料的主要瓶颈。我们开发了一种具有定制微晶格的材料，该材料是等弹性的，即刚度特性是平衡的，并且应变能与宿主骨组织的应变能机械匹配[1-3]。该材料是一种梯度多孔Ti-6Al-4V，具有优化的微结构，可创建微小的结构细节。我们已经成功地证明，电子束熔化（EBM）可用于构建Ti-6Al-4V梯度微晶格[1，4，5]。然而，扫描电子显微镜（SEM）显示了EBM过程中的局限性：在设计和构建的Ti-6Al-4V微晶格之间观察到形态失配。