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金属学报  2011, Vol. 47 Issue (9): 1216-1220    DOI: 10.3724/SP.J.1037.2011.00211
  论文 本期目录 | 过刊浏览 |
3种锆合金的高温氧化行为
邱军, 赵文金,  Thomas Guilbert,  Jean-Luc Bechade
1) 中国核动力研究设计院反应堆燃料及材料重点实验室, 成都 610041
2) 法国原子能委员会Scalay研究中心,  Gif-sur-Yvette cedex 91191, 法国
HIGH TEMPERATURE OXIDATION BEHAVIOURS OF THREE ZIRCONIUM ALLOYS
QIU Jun, ZHAO Wenjin Thomas Guilbert  Jean-Luc Bechade
1) Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610041
2) French Atomic Energy and Alternative Energies Commission, Gif-sur-Yvette cedex 91191, France
引用本文:

邱军 赵文金 Thomas Guilbert Jean-Luc Bechade. 3种锆合金的高温氧化行为[J]. 金属学报, 2011, 47(9): 1216-1220.
, . HIGH TEMPERATURE OXIDATION BEHAVIOURS OF THREE ZIRCONIUM ALLOYS[J]. Acta Metall Sin, 2011, 47(9): 1216-1220.

全文: PDF(2309 KB)  
摘要: 对Zr-A和Zr-B锆合金在700-1200 ℃的O2中进行了等温氧化实验, 观察了合金的氧化动力学行为和基体微观结构演变, 并与低Sn的Zr-4合金作了对比. 结果表明,  700-1200 ℃氧化时, 3种锆合金的动力学曲线基本服从抛物线规律, Zr-B合金在700 ℃氧化1200 s后速率出现转折; 800 ℃时Zr-A和Zr-B 合金的氧化速率出现转折; 1000 ℃时3种合金动力学曲线由抛物线变为近似直线; 1100 ℃以上氧化时, 动力学曲线呈抛物线规律, 未出现转折. 在1100 ℃以上氧化时, 合金成分对3种合金的高温氧化性能影响甚微. 依据氧化增重数据得到了3种合金在700-1200 ℃氧化反应的抛物线速率常数Kp的表达式.
关键词 锆合金高温氧化氧化动力学    
Abstract:Isothermal oxidation behaviors of Zr-alloys Zr-A and Zr-B cladding tubes in flowing oxygen were measured and compared to Zr-4 cladding tube over a wide temperature range from 700 ℃ to 1200 ℃. The results show that the kinetics oxidation curves of all the alloys basically obey the parabolic rate law at the temperature range from 700 ℃ to 1200 ℃. In 700 ℃ oxidation of alloy Zr-B, a rate transition occurrs at about 1200 s. The rate transitions in 800 ℃ curves of alloys Zr-A and Zr-B occurr at about 600 s. The oxidation kinetics curves are changed for all the alloys at 1000 ℃, which is resulted from the crack in the oxide layer due to the ZrO2 phase transformation from a monoclinic structure to a tetragonal structure. At the temperature above 1100 ℃, the oxidation kinetics curves of all the alloys obey the parabolic rate law, and no kinetics changes were observed. The results also show that the alloy composition has a negligible effect on the oxidation resistance at the temperature above 1100 ℃. The parabolic rate constant Kp of the oxidation reaction was get through calculating weight gain due to oxidation.
Key wordszirconium alloy    high-temperature oxidation    oxidation kinetics
收稿日期: 2011-04-06     
作者简介: 邱军, 男, 1970年生, 副研究员
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