Crofer22APU铁素体不锈钢是固体燃料电池连接体的备选材料之一。通过增重法研究了Crofer22APU铁素体不锈钢在800℃空气中的抗高温氧化动力学,并结合X射线衍射(XRD)、扫描电镜(SEM)、能谱分析(EDS)等手段,对氧化膜的形貌和组成进行了分析。结果发现,Crofer22APU铁素体不锈钢在800℃下0~100h的平均氧化速率为0.032g/(m2.h);100~450h的平均氧化速率为0.0091g/(m2.h);450~550h的平均氧化速率为5.0×10-4g/(m2.h)。氧化膜分为内外两层,内层主要是含SiO2的氧化物,外层主要是含Cr2O3的氧化物。
Crofer22 APU Ferrite Stainless Steel was one of optional materials of SOFC connector.Through gain weight method,the resistance to high temperature oxidation dynamics was investigated for Crofer22 ferrite stainless steel under condition of 800 ℃ in the air.Surface morphology and constituent of the oxidation film was analyzed by means of XRD,SEM and EDS techniques.The results show that the Crofer22 alloys' average oxidation rates under 800 ℃ are:0.032 g·m-2·h-1(0-100 h),0.009 1 g·m-2·h-1(100-450 h)and 5.0×10-4g·m-2·h-1(450-550 h).The oxidation film of oxidized Crofer22 alloys mainly consists of the outer oxide with Cr2O3 and the inner oxide with SiO2.
参考文献
[1] | 衣宝廉.燃料电池--高效环境友好的发电方式[M].北京:化学工业出版社,2000 |
[2] | 卢凤双,张建福,华彬,蒲健,李箭,张敬霖,张建生.固体氧化物燃料电池连接体材料研究进展[J].金属功能材料,2008(06):44-48. |
[3] | Zhu J H;Geng S J .Evaluation of Several Low Thermal Ex pansion Fe-Co-Ni Alloys as Interconnect for Reduced-Temper ature Solid Oxide Fuel Cell[J].International Journal of Hydrogen Energy,2006,32:3682. |
[4] | 谢光远;崔嵬;肖建中 等.基于00Crl7的连接材料抗氧化研究[J].华中科技大学学报,2004,32(06):76. |
[5] | 杨洪业,徐凤莲,李志伟,刘杰,景旭冉.ZG35Cr27Ni7Si耐热钢抗氧化研究[J].现代冶金,2009(06):9-11. |
[6] | 韩敏芳;杨翠柏;彭苏萍 .新型耐高温Fe-Cr基合金抗氧化性能研究[J].稀有金属材料与工程,2005,34:372. |
- 下载量()
- 访问量()
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%