High Temperature Oxidation of Centrifugally Cast, Heat-Resistant Alloys

离心铸造耐热合金的高温氧化

• 批准号: 538877-2019
• 负责人: Kish, Joseph
• 金额: $ 1.82万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680749
• 关键词: Temperature; Oxidation; Centrifugally; Cast; Heat

The research challenge to be addressed through the project involves an investigation of the steam oxidation performance of radiant tube alloys of interest to KUBOTA under well-controlled experimental conditions. It also involves an associated detailed surface analysis of the oxide scale formed using state-of-the-art analytical tools and instruments, namely site-specific sample preparation using focused ion beam (FIB) milling and high resolution electron microscopy and associated techniques. The site selectivity of the FIB sample preparation approach is absolutely critical given the heterogeneous microstructures that are intrinsic to the centrifugal casting process used by KUBOTA to manufacture the radiant tubes. The knowledge platform developed will support alloy development initially to ensure consistent, and ultimately to improve, oxide scale performance by elucidating the key kinetic and metallurgical factors that control the evolution of the oxide scale during the decoking process.

通过该项目解决的研究挑战涉及在良好控制的实验条件下对KUBOTA感兴趣的辐射管合金的蒸汽氧化性能进行调查。它还涉及使用最先进的分析工具和仪器，即使用聚焦离子束（FIB）铣削和高分辨率电子显微镜及相关技术进行特定地点样品制备，对形成的氧化皮进行相关的详细表面分析。鉴于KUBOTA用于制造辐射管的离心铸造工艺所固有的异质微观结构，FIB样品制备方法的位置选择性绝对至关重要。开发的知识平台将支持合金开发，以确保一致的，并最终通过阐明控制除焦过程中氧化皮演变的关键动力学和冶金因素来改善氧化皮性能。