Laser Processing of Biocompatible NiTi Shape Memory Alloys

拟议的研究计划将作为弥合工业设计/应用与材料科学之间差距的长期愿景的平台，推动形状记忆合金(SMA)技术的发展，使工业能够充分发挥其潜力。更具体地说，拟议的下一期发现研究将侧重于进一步发展极具前景的激光加工技术，解决过去文献中确定的问题，并建立在申请者先前发现计划的基础上。这项研究的主要目标是：i)了解和发展相变温度和激光加工条件之间的定量关系；ii)调查激光加工条件对形状记忆效应和伪弹性性能的影响；iii)了解和改善加工材料的腐蚀性能和生物相容性；以及，iv)传播核心研究，以促进激光技术可以有益于工业和基础SMA研究的新应用的开发。该项目的成功实施不仅将为激光加工NiTiSMA提供宝贵的基础知识，还将对新技术的开发、向行业传播核心研究以及培养高素质人才(HQP)产生重大影响。这项工作开发的加工协议和SMA材料科学将为加拿大行业提供竞争优势，包括但不限于医疗、汽车、航空航天和微电子行业。包括3名博士、4名硕士生和2名博士后研究员在内的9名HQP将在拟议的五年发现研究计划中接受培训。这些研究人员将在尖端实验和分析设备方面获得经验，并将在材料科学和工程以及激光加工领域获得专业知识。因此，加拿大未来的竞争力将通过他们未来在加拿大工业界、学术界和政府的职位来增强。

The proposed research program will act as a platform for the long-term vision of bridging the gap between industrial design/application and material science, furthering shape memory alloy (SMA) technologies to the point where industry can reap their full potential. More specifically, the proposed next term of discovery research will focus on furthering extremely promising laser processing technologies, addressing past issues identified in literature and building on fundamental discoveries from the applicant's previous discovery program. The key objectives of this research are: i) understand and develop quantitative relationship between phase transformation temperatures and laser processing conditions; ii) Investigate the effects of laser processing conditions on the shape memory effect and pseudoelastic properties; iii) understand and improve upon the corrosion performance and biocompatibility of processed material; and, iv) disseminate core research to facilitate the development of new applications where laser technologies can benefit industry and fundamental SMA research. The successful execution of this program will not only provide valuable fundamental insight into laser processing NiTi SMAs, but will also greatly impact development of new technologies, dissemination of core research to industry, and train highly qualified personnel (HQP). Processing protocol and SMA materials science developed in this work will provide competitive advantage to Canadian industries including, but not limited to, medical, automotive, aerospace, and microelectronics industries. Nine HQP including 3 doctorate, 4 masters students, and 2 post-doctoral fellows will be trained over the proposed five year discovery research program. These researchers will gain experience with leading edge experimental and analytical equipment and will gain expertise in the fields of materials science and engineering, and laser processing. Canada's future competitiveness will therefore be enhanced through their future positions in Canadian industry, academia, and government.