题目：CO₂-rich Gas Corrosion of Chromia-Forming Alloys: Recent Advances

报告人：Prof Jianqiang Zhang

          School of Materials Science and Engineering
          University of New South Wales
          Sydney, 2052, Australia

摘要：Coal combustion provides cheap energy but creates corrosion problems due to the release of CO₂ gas in power generation. Solutions include capture and storage of this reaction product. Oxyfuel combustion is an emerging technology enabling the generation of a flue gas suitable for sequestration. In this process, coal is burnt in a mixture of oxygen and recycled exhaust gas rather than in air, leading to a flue gas mainly composed of CO₂ and H2O. Unfortunately, this gas mixture is highly reactive, producing not only oxidation but also carburisation. The high temperature lab at the School of Materials Science and Engineering, UNSW, has been working in CO₂ corrosion at high temperature for more than 10 years, and obtained extensive results on mechanism understanding and strategy development to resist CO₂ corrosion. This talk will present the group recent research results in this area, including grain boundary effect of chromia on carbon transportation using atom probe tomography, strategies for preventing CO₂ corrosion by forming additional diffusion barriers (alloying with Mn, Si), surface/grain boundary modification by adding S in gas, and effect of H₂O on CO₂ corrosion.

时间: 2016年6月16日(周四), 14:00

地点：南区报告厅1楼

欢迎所内职工及研究生参加！