王永刚, 何业东, 朱日彰, 杨思泽. 高能量密度等离子体表面微晶化对Fe3Al高温氧化的影响[J]. 工程科学学报, 1996, 18(S2): 6-10,15. DOI: 10.13374/j.issn1001-053x.1996.s2.002
引用本文: 王永刚, 何业东, 朱日彰, 杨思泽. 高能量密度等离子体表面微晶化对Fe3Al高温氧化的影响[J]. 工程科学学报, 1996, 18(S2): 6-10,15. DOI: 10.13374/j.issn1001-053x.1996.s2.002
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Wang Yonggang, He Yedong, Zhu Rizhang, Yang Size. Influence of Micro-Crystallization by High Energy Density Plasma on High Temperature Oxidation of Fe3Al[J]. Chinese Journal of Engineering, 1996, 18(S2): 6-10,15. DOI: 10.13374/j.issn1001-053x.1996.s2.002
Citation: Wang Yonggang, He Yedong, Zhu Rizhang, Yang Size. Influence of Micro-Crystallization by High Energy Density Plasma on High Temperature Oxidation of Fe3Al[J]. Chinese Journal of Engineering, 1996, 18(S2): 6-10,15. DOI: 10.13374/j.issn1001-053x.1996.s2.002
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高能量密度等离子体表面微晶化对Fe3Al高温氧化的影响

Influence of Micro-Crystallization by High Energy Density Plasma on High Temperature Oxidation of Fe3Al

    摘要
  • 摘要: 应用高能量密度等离子体对Fe3Al进行微晶化处理,在合金表面获得了晶粒尺寸介于10~100nm的微晶层。对比研究了铸态Fe3Al微晶处理前后在空气中1000℃高温氧化的行为和规律,发现微晶化处理后,合金表面在氧化过程中形成了微晶氧化膜,极大地改善了氧化膜的塑性和粘附性,氧化速率显著降低,氧化动力学服从4次方规律。

     

    Abstract: High energy density plasma technique(HEDP) was applied to surface treatment of Fe3Al. A micro-crystalline layer with grain sizes between 10 and 100nm was obtained. Isothermal oxidation at 1000℃ in air for cast Fe3Al before and after micro-crystallizing was studied. The results showed that for the micro-crystalline Fe3Al,(1) a micro-crystalline oxide scale formed during oxidation;(2) the plasticity and adhesion of oxide scale was remarkably improved;(3) the oxidation rate was decreased;(4) the oxidation kinetics obeyed the forth power equation law.

     

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