High temperature corrosion induced by multiple secondary oxidants

多种二次氧化剂引起的高温腐蚀

• 批准号: DP200101612
• 负责人: Prof Jianqiang Zhang
• 金额: $ 38.89万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2020
• 资助国家: 澳大利亚
• 起止时间: 2020-02-03 至 2023-07-02
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP200101612
• 关键词: temperature; corrosion; induced; multiple; secondary

Heat resisting chromia-forming alloys passivate successfully in clean, dry air at temperatures up to about 950°C. However, this performance is degraded by secondary oxidants (carbon, sulphur, chlorine, water vapour), leading to corrosion failure in important industries. The project aims to investigate the effect of these secondary oxidants on corrosion behaviour of chromia-forming alloys, to identify interactions between multiple oxidants within the scale, to establish the mechanisms of oxide scale penetration by foreign species, and to evaluate scales on different alloy types. The results will provide a basis for improved design/selection of heat resisting chromia-forming alloys, key to power generation industries.

耐热氧化铬形成合金在清洁、干燥的空气中在高达约950°C的温度下成功钝化。然而，这种性能会被二次氧化剂（碳、硫、氯、水蒸气）降低，导致重要行业的腐蚀失效。该项目旨在研究这些二次氧化剂对氧化铬形成合金的腐蚀行为的影响，以确定氧化皮内多种氧化剂之间的相互作用，建立外来物种渗透氧化皮的机制，并评估不同合金类型的氧化皮。研究结果将为发电行业关键的耐热氧化铬形成合金的改进设计/选择提供依据。