Microstructural Analysis of High-Temperature Corrosion Scales

高温腐蚀鳞片的微观结构分析

• 批准号: 9022640
• 负责人: Linn Hobbs
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-05-15 至 1995-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9022640&HistoricalAwards=false
• 关键词: Microstructural; Analysis; Temperature; Corrosion; Scales

The goal of this research is to study the corrosion processes in refractory metals and refractory metal-bearing alloys. The primary focus will be on the characterization of the microstructural evolution of corrosion scales using thermogravimetry, SEM, TEM, and XTEM techniques. Specifically, the sulfidation of Niobium, Niobium- bearing Chromium alloys, and Iron-Chromium-Niobium and Chromium- Molybdenum systems will be investigated. In addition, in-situ oxidation and hot-corrosion of pure Chromium, Nickel-Chromium alloys, and NickelAluminide will also be studied in the Environmental Scanning Electron Microscope (ESEM). This will be the first application of ESEM to high temperature oxidation and sulfidation of metals. The research is expected to help with the development of new corrosion resistant alloys by contributing to the fundamental understanding of corrosion mechanisms.

本研究的目的是研究腐蚀过程中， 难熔金属和含难熔金属的合金。主 重点将是微观结构的表征 使用热重分析、SEM、TEM和 XTEM技术具体而言，铌的硫化，铌- 轴承铬合金，铁铬铌和铬- 将研究钼系统。此外，在现场 纯铬、镍铬合金的氧化和热腐蚀 合金和镍化物也将在研究中进行研究。 环境扫描电子显微镜（ESEM）。这将是 首次将环境扫描电镜应用于高温氧化， 金属的硫化。这项研究预计将有助于 开发新的耐腐蚀合金， 对腐蚀机理的基本认识。