SGER: Proof of Concept Experiments for Novel Tribological Systems: Superelastic Response in Sputtered Tinix Film Coatings

SGER：新型摩擦系统的概念实验验证：溅射 Tinix 薄膜涂层中的超弹性响应

• 批准号: 0336810
• 负责人: David Grummon
• 金额: $ 5.95万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0336810&HistoricalAwards=false
• 关键词: SGER; Proof; Concept; Experiments; Novel

Proof of Concept Experiments for Novel Tribological Systems: Superelastic Response in sputtered TiNiX Film Coatings Abstract -- Shape-memory, and especially superelastic alloys, are of interest as tribological materials because they express large and reversible strain excursions without accumulating lattice damage from dislocation-mediated slip. Recent experiments at General Motors Research Laboratories and at Michigan State University have established the robust operation of both shape-memory and superelastic effects during localized microscale deformation. In this project we will explore the potential for functional vapor-deposited thin films of nickel-titanium shape-memory and superelastic alloys to enhance compliance and limit damage accumulation in wear processes. If successful, the project could have very substantial impact in many tribological applications for sleeve bearings, etc. By deploying a sputtered thin film coating of superelastic NiTi, either as a functionally graded surface film, or as an interlayer between a metallic substrate and a conventional hard-coating, we will attempt to confer the beneficial tribological effects of superelasticity to base-metal substrates. The principal objective of the project will be to demonstrate that sputtered TiNi films, integrated with tailored hard coatings, will show significantly better wear resistance than conventional coatings alone. The technique will also be evaluated for its ability to improve hard-coating adhesion by ameliorating severe thermal expansion and elastic constant mismatches between the coating and base materials, particularly for aluminum alloy substrates.

新型摩擦学系统的概念实验证明：溅射TiNiX薄膜涂层的超弹性响应摘要--形状记忆合金，特别是超弹性合金，作为摩擦学材料是有意义的，因为它们表达了大的和可逆的应变偏移，而不积累位错介导的滑动造成的晶格损伤。 最近在通用汽车研究实验室和密歇根州立大学的实验已经建立了强大的操作过程中的形状记忆和超弹性效应的局部微尺度变形。 在这个项目中，我们将探索镍钛形状记忆和超弹性合金的功能气相沉积薄膜的潜力，以提高顺应性和限制磨损过程中的损伤积累。 如果成功，该项目可能会对套筒轴承等的许多摩擦学应用产生重大影响。 通过部署溅射薄膜涂层的超弹性NiTi，无论是作为一个功能梯度表面膜，或作为一个金属基板和一个传统的硬涂层之间的夹层，我们将试图赋予有益的摩擦学效应的超弹性基体金属基板。 该项目的主要目标是证明溅射TiNi薄膜与定制的硬质涂层相结合，将显示出比传统涂层更好的耐磨性。 该技术还将评估其改善涂层和基材之间严重的热膨胀和弹性常数失配，特别是铝合金基材，以提高硬涂层的附着力的能力。