超临界二氧化碳布雷顿循环系统中材料的腐蚀行为

Corrosion Behavior of Alloys in Supercritical CO_2 Brayton Cycle Power Generation

超临界二氧化碳(S-CO_2)布雷顿循环因其自身的技术优势在新型燃机、第四代核电、火电以及太阳能发电机组中具有潜在的应用。文中综述了目前有关S-CO_2布雷顿循环体系中材料的腐蚀行为以及超临界参数(温度、压力)对合金的腐蚀速率影响研究进展,重点介绍了水蒸气、含硫气体(1 mg/L量级)、空气掺杂等对超临界CO_2腐蚀行为影响规律及机理,并指出了现有研究的不足及未来研究的展开方向。

Supercritical carbon dioxide（S-CO_2） Brayton cycle has potential applications in the new gas turbine, the fourth generation nuclear power station, thermal power station and concentrated solar power station because of its unique advantages. This paper reviews the current works about corrosion behavior of materials in S-CO_2 Brayton cycle system, the effects of supercritical parameters（temperature and pressure） on corrosion rate of alloys. The effects of doped gas on the corrosion behavior and mechanism, such as steams, S-containing gas and air, were also reviewed. Furthermore, the deficiency of current research and future research expansion were pointed out for interests.