• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 1990, Vol. 26 ›› Issue (4): 2-6.

• 论文 •    下一篇

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硼含量对Ni3Al合金抗氧化性能的影响

孙超;李辉;郭建亭   

  1. 中国科学院金属研究所
  • 发布日期:1990-07-01

THE EFFECT OF BORON CONTENT ON OXIDATION RESISTANCE OF Ni3Al ALLOYS

Sun Chao;Li Hui;Guo Jianting   

  1. Shenyang Institute of Metal, chinese Academy of Sciences
  • Published:1990-07-01

摘要： 本文研究了硼含量对Ni3Al合金抗氧化性能的影响。结果表明，当硼含量在0.11～0.29wt%时，合金的抗氧化性能明显改善，而更高的硼含量由于生成了复杂的硼氧化物，破旧坏了Al2O3氧化硼的完整性，使合金的抗氧化性能恶化。

关键词: Ni{sub}3Al, 金属间化合物, 硼作用, 氧化

Abstract: The effect of boron content(0 to 0.48wt％) on isothermal oxidation behaviour of Ni3Al at 750 to 1150℃ for 3 to 100 h has been studied. The results show that the isothermal oxidation kinetics of Ni3Al with various boron contents at different temperatures obeys the parabolic law. The compounds with 0.11 to 0.20wt％ B show the best oxidation resistance .The morphology and microstructure of the scales have also been investigated.

Key words: Ni{sub}3Al, 金属间化合物, 硼作用, 氧化

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