GOALI/Collaborative Research: A Combined Materials and Mechanics Study on Failure and Materials Improvement of Coating/Substrate Interfaces

GOALI/协作研究：涂层/基材界面失效和材料改进的材料与力学组合研究

• 批准号: 0900167
• 负责人: Wen Meng
• 金额: $ 20.01万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-15 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0900167&HistoricalAwards=false
• 关键词: GOALI; Collaborative; Research; Combined; Materials

This GOALI project is a collaborative effort between Louisiana State University (LSU), Vanderbilt University (Vanderbilt), and the Timken Company (Timken), and concentrates on a subtopic within the field of surface engineering. We plan to conduct a systematic investigation of how the fracture toughness of the interface between a ceramic coating and a substrate depends on the structure and chemistry of the interface region. Our plan combines coating/interfacial layer synthesis, atomic-level structural/chemicalcharacterization, and quantitative interfacial fracture toughness measurements. Such a detailed materials/mechanics study on how the structure and chemistry of the interfacial region impact its fracture resistance is the key to establishing quantitative materials design criteria for coating/substrate interfaces in specific applications.Modifying the near-surface mechanical/chemical properties by applying coatings is important to applications in the traditional machinery and transportation industries and to the emerging micro-electromechanical systems (MEMS) industries. Correct applications of coatings enable macro/micro scalemechanical systems and manufacturing techniques to perform beyond their current envelopes. A better understanding of the failure of coated systems is critical to the future success of "old" (e.g., machinery and transportation) and "new" (e.g., MEMS) industries.This GOALI project from LSU, Vanderbilt, and Timken builds on significant past and ongoing research on the synthesis and structural/chemical characterization of coating/interface/substrate systems(LSU), novel mechanical property characterization of layered materials, and in particular, their interfaces (Vanderbilt). The participation of the industrial partner (Timken) offers added expertise in tribological testing of coated components, and establishes a firm connection between interfacial mechanical properties and performance under engineering contact conditions.This LSU-Vanderbilt-Timken collaboration is interdisciplinary, and promises enhanced educational opportunities for LSU and Vanderbilt students. Our existing LSU/Southern University educational collaborations offer opportunities for minority students to be informed of and involved in cutting-edge research, and advance NSF?s goals in both research and education.

该 GOALI 项目是路易斯安那州立大学 (LSU)、范德比尔特大学 (Vanderbilt) 和铁姆肯公司 (Timken) 之间的合作成果，专注于表面工程领域的一个子主题。我们计划对陶瓷涂层和基材之间界面的断裂韧性如何取决于界面区域的结构和化学进行系统研究。我们的计划结合了涂层/界面层合成、原子级结构/化学表征和定量界面断裂韧性测量。这种关于界面区域的结构和化学如何影响其抗断裂性的详细材料/力学研究是建立特定应用中涂层/基底界面定量材料设计标准的关键。通过应用涂层来改变近表面机械/化学性能对于传统机械和运输行业以及新兴的微机电系统（MEMS）行业的应用非常重要。涂层的正确应用使宏观/微观机械系统和制造技术的性能超越其当前的范围。更好地了解涂层系统的故障对于“旧”（例如机械和运输）和“新”（例如 MEMS）行业未来的成功至关重要。LSU、范德比尔特和铁姆肯公司的这个 GOALI 项目建立在过去和正在进行的涂层/界面/基材系统 (LSU) 的合成和结构/化学表征、层状材料的新颖机械性能表征以及 特别是他们的界面（Vanderbilt）。工业合作伙伴（铁姆肯公司）的参与提供了涂层部件摩擦学测试方面的额外专业知识，并在工程接触条件下的界面机械性能和性能之间建立了牢固的联系。路易斯安那州立大学-范德比尔特-铁姆肯公司的这项合作是跨学科的，并承诺为路易斯安那州立大学和范德比尔特学生提供更多的教育机会。我们现有的路易斯安那州立大学/南方大学教育合作为少数族裔学生提供了解和参与前沿研究的机会，并推进 NSF 在研究和教育方面的目标。