CAREER: Fundamental Micromechanics and Materials Dynamics of Thermal Barrier Coating Systems Containing Multiple Layers

职业:包含多层的热障涂层系统的基本微观力学和材料动力学

基本信息

  • 批准号:
    9984899
  • 负责人:
  • 金额:
    $ 27.74万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2000
  • 资助国家:
    美国
  • 起止时间:
    2000-03-01 至 2005-08-31
  • 项目状态:
    已结题

项目摘要

9984899WeaverThis research focuses on understanding the fundamental concepts controlling the mechanical properties of microconstituents in thermal barrier coatings (TBC) as a function of thermal exposure, both time and temperature. The specific goals of the proposed program are: (1) Characterize the properties of the macro- and micro-constituents of the TBC system as a function of thermal exposure using four model TBC systems; (2) Monitor and analyze the displacements of the TBC constituents during thermal cycling and isothermal oxidation coupled with mechanical strain; and (3) Develop physical and finite element models of TBC durability based on microstructural and mechanical evaluations of degradation mechanisms and processes. The specific objectives of the educational plan are: (1) Enhance the undergraduate curriculum by providing students with "hands on" training in the study of commercially viable thick films and coating materials; (2) Encourage undergraduate students from UA, Stillman, and FAMU to pursue graduate studies in Metallurgical and Materials Engineering; and (3) Increase diversity by attracting underrepresented minority students to undergraduate and graduate study at The University of Alabama. %%%The research results should provide fundamental understanding of the mechanisms contributing towards TBC failure and lead to the development of more accurate life prediction models. Thermal barrier coatings (TBC's) have been used for nearly three decades to extend the performance of aircraft turbines operating in hostile environments. Current TBC's are typically multilayer systems incorporating an insulating ceramic topcoat applied over a metallic bond coat; the latter is deposited directly on the surface of the component. While TBC's exhibit the desired insulating capability, it is the durability and reliability issues that have limited their application. A lack of fundamental data concerning the influence of microstructural degradation on the mechanical response of TBC's has impeded the development of accurate life prediction models. ***
9984899 Weaver这项研究的重点是了解控制热障涂层(TBC)中微观成分的机械性能的基本概念,作为热暴露的函数,包括时间和温度。该计划的具体目标是:(1)使用四个模型TBC系统表征TBC系统的宏观和微观组分的性质作为热暴露的函数:(2)监测和分析TBC组分在热循环和等温氧化与机械应变耦合期间的位移;(3)在对TBC的老化机理和过程进行微观结构和力学评价的基础上,建立TBC耐久性的物理和有限元模型。教育计划的具体目标是:(1)通过为学生提供商业上可行的厚膜和涂层材料研究的“动手”培训,加强本科课程;(2)鼓励来自UA、Stillman和FAMU的本科生攻读冶金和材料工程的研究生课程;以及(3)通过吸引代表性不足的少数民族学生到亚拉巴马大学的本科和研究生学习来增加多样性。%研究结果应该提供对TBC失效机制的基本理解,并导致更准确的寿命预测模型的发展。热障涂层(TBC)已经使用了近三十年,以扩展在恶劣环境中操作的航空涡轮机的性能。目前的TBC通常是多层系统,其包含施加在金属粘合涂层上的绝缘陶瓷顶涂层;后者直接沉积在部件的表面上。虽然TBC表现出所需的绝缘能力,但耐久性和可靠性问题限制了它们的应用。由于缺乏有关微观结构退化对TBC机械响应影响的基础数据,阻碍了准确寿命预测模型的开发。***

项目成果

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Mark Weaver其他文献

Do Owners and Managers Really Differ?
业主和管理者真的有区别吗?
Fitness, persistence, and responsiveness of a genetically engineered strain of <em>Trichoderma virens</em> in soil mesocosms
  • DOI:
    10.1016/j.apsoil.2004.11.006
  • 发表时间:
    2005-06-01
  • 期刊:
  • 影响因子:
  • 作者:
    Mark Weaver;Elena Vedenyapina;Charles M. Kenerley
  • 通讯作者:
    Charles M. Kenerley

Mark Weaver的其他文献

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{{ truncateString('Mark Weaver', 18)}}的其他基金

Opportunities in Experiment, Computation, Theory and AI Virtual July 2021 Workshop with Focus on Metals and Alloys
2021 年 7 月实验、计算、理论和人工智能虚拟研讨会机会,重点关注金属和合金
  • 批准号:
    2132475
  • 财政年份:
    2021
  • 资助金额:
    $ 27.74万
  • 项目类别:
    Standard Grant
Determining Pathways for Improved Oxidation Resistance in Compositionally Complex Alloys
确定提高成分复杂合金的抗氧化性的途径
  • 批准号:
    2105364
  • 财政年份:
    2021
  • 资助金额:
    $ 27.74万
  • 项目类别:
    Standard Grant
Fundamental Influences of Grain Size on Oxidation Behavior of Nanocrystalline Alumina-Forming Alloys
晶粒尺寸对纳米晶氧化铝合金氧化行为的基本影响
  • 批准号:
    1411280
  • 财政年份:
    2014
  • 资助金额:
    $ 27.74万
  • 项目类别:
    Standard Grant
53rd International Field Emission Society (IFES) Conference and Pre-meeting Tutorial; University of Alabama, Tuscaloosa, AL; May 2012
第 53 届国际场发射学会 (IFES) 会议和会前教程;
  • 批准号:
    1230970
  • 财政年份:
    2012
  • 资助金额:
    $ 27.74万
  • 项目类别:
    Standard Grant
A Novel Containerless Melting and Casting Process for Structural Cast Magnesium Alloys
一种新型结构铸造镁合金无容器熔炼铸造工艺
  • 批准号:
    0856320
  • 财政年份:
    2009
  • 资助金额:
    $ 27.74万
  • 项目类别:
    Standard Grant
Fundamental Materials Dynamics of Protective Overlay Coatings for High Temperature Structural Materials
高温结构材料保护涂层的基础材料动力学
  • 批准号:
    0504950
  • 财政年份:
    2005
  • 资助金额:
    $ 27.74万
  • 项目类别:
    Continuing Grant
Acquisition of a Field Emission Scanning Electron Microscope
购买场发射扫描电子显微镜
  • 批准号:
    0321180
  • 财政年份:
    2003
  • 资助金额:
    $ 27.74万
  • 项目类别:
    Standard Grant
Dendrimer-Based Nanocomposites for Tribological Applications
用于摩擦学应用的基于树枝状聚合物的纳米复合材料
  • 批准号:
    0324601
  • 财政年份:
    2003
  • 资助金额:
    $ 27.74万
  • 项目类别:
    Standard Grant

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