Corrosion of heat resisting alloys in steam/hydrogen-rich environment

氢是未来能源的清洁燃料。它的生产和利用不可避免地涉及到高温下的水蒸气和氢气，而这些水蒸气和氢气对系统中使用的材料具有腐蚀性。本项目旨在研究耐高温合金在氢气和水蒸气存在下的腐蚀行为，水在氧化垢中的输运机制，以及氢气对水蒸气腐蚀的影响。将定义合金对腐蚀速率的影响，并设计在氢气存在下减缓或防止水蒸气腐蚀的方法。研究结果将为氢生产和氢利用行业改进耐热合金的设计/选择提供依据。

Hydrogen is a clean fuel for energy future. Its production and utilisation unavoidably involve water vapour and hydrogen at high temperature which is however corrosive to materials used in the system. This project aims to investigate corrosion behaviour of heat resistant alloys in the presence of both hydrogen and water vapour, mechanisms of water transport in oxide scale, and the effect of hydrogen on water vapour corrosion. Alloying effects on corrosion rates will be defined and methods of slowing or preventing water vapour corrosion in the presence of hydrogen will be devised. The results will provide a basis for improved design/selection of heat resisting alloys for hydrogen production and hydrogen utilisation industries.