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SiC/Fe_xSi_y复合材料抗氧化性能研究
Authors
仉小猛
叶树峰
+3 more
徐利华
陈运法
魏连启
Publication date
1 January 2011
Publisher
Abstract
对以铁尾矿为主要原料制备的S iC/FexS iy复合材料进行抗氧化性能实验。变温氧化实验结果表明,复合材料在1000℃下有很好的抗氧化性能,而在1180℃以上氧化明显加剧。随氧化时间的延长,扩散成为控制性环节,表现为保护性氧化。复合材料在整个变温氧化过程中,表现为先失重再增重;1210℃时,增重达到最大值;整个变温氧化过程分为三个阶段:(1)增重阶段;(2)恒重阶段;(3)失重阶段。复合材料的氧化规律服从化学反应控速-混合控速-扩散控速三段模型。通过对复合材料恒温氧化动力学推导,求出材料在不同阶段表观活化能及频率因子,进而可推导出各阶段氧化速度常数k和温度T(K)的经验关系式
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Last time updated on 05/12/2019
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
See this paper in CORE
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oai:ir.ipe.ac.cn:122111/10802
Last time updated on 09/11/2016
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/44538
Last time updated on 11/04/2021