• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>National Association of Corrosion Engineers Conferences >Comparison of the corrosion behaviour of 9-12 Cr steels in H2O,H2O-CO2 and H2O-CO2-O2
【24h】

Comparison of the corrosion behaviour of 9-12 Cr steels in H2O,H2O-CO2 and H2O-CO2-O2

机译：H2O，H2O-CO2和H2O-CO2-O2中9-12％Cr钢的腐蚀行为的比较

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The development of a new high efficient power plant generation with higher combustion and steam temperatures demands corrosion resistant steels. The environmental need to es- tablish CO2 capture technology influences the flue gas composition due to oxyfuel combustion. To conserve necessary resources,higher process efficiency is a must. Consequently,the oxi- dation behaviour of the power plant steels T92 and B was investigated for 1000 h in the main environments of future power plants: steam,H2O-CO2 and H2O-CO2-O2 atmospheres at a pressure of 80 bar and in a temperature range between 550°C to 625°C. The corrosion rates were distinctly different in the investigated gas compositions. In steam,the oxide scales were thicker compared to those in the other gas compositions,which is a well known effect of the accelerated corrosion by H2O. In the three test atmospheres a general phase sequence was observed consisting of (Fe,Cr)2O3 in FeO,Fe-Cr-Spinel and Fe3O4 start- ing from the steel oxide interface. The Fe-Cr-Spinel was enriched in Cr near the steel interface. In a H2O and H2O-CO2-O2 atmosphere an additional Fe2O3 layer (hematite or maghemite) was observed on the oxide/gas interface.
机译：具有更高燃烧和蒸汽温度的新型高效发电厂的开发需要耐腐蚀钢。对CO2捕获技术的环境需求影响氧气燃烧引起的烟气组成。为了保护必要的资源，必须更高的过程效率是必须的。因此，在未来发电厂的主要环境中研究了电力厂钢T92和B的氧行为：蒸汽，H2O-CO2和H2O-CO-O2大气压在80巴的压力和A中温度范围为550°C至625°C。在研究的气体组合物中，腐蚀速率明显不同。在蒸汽中，与其他气体组合物中的那些相比，氧化物鳞片厚度较厚，这是通过H2O加速腐蚀的众所周知的效果。在三个测试环境中，观察到一般相序列由FeO，Fe-Cr-Spinel和Fe3O4中的（Fe，Cr）2O3组成，从钢氧化物界面开始。 Fe-Cr-尖晶石在钢界面附近富集Cr。在H 2 O和H 2 O-CO 2-O2大气中，在氧化物/气体界面上观察到另外的Fe 2 O 3层（赤铁矿或染色体）。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号