首页> 外文期刊>Journal of Advanced Science >微量のイットリウムを添加したFeCrAl合金の酸素-水蒸気(47vol%)中における耐高温酸化性
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微量のイットリウムを添加したFeCrAl合金の酸素-水蒸気(47vol%)中における耐高温酸化性

机译:添加少量钇的FeCrAl合金在氧气/水蒸气(47vol%)中的高温抗氧化性

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摘要

High-temperature oxidation resistance of FeCrAl alloys with small amounts of yttrium was studied in oxygen-water vapor (47 vol%) up to five cycles (one cycle = 18ks) at 1573K, by mass gain measurements, the amount of spalled oxide, X-ray diffraction, scanning electron microscopy, and field emission-transmission electron microscopy-energy dispersive spectroscopy. Oxide films on FeCrAl, FeCrAl0.1Y and FeCrAl0.2Y alloys spalled, however, those of on FeCrAl0.5Y alloy showed good oxide adherence during cyclic oxidation. Oxides on all the alloys were mainly found as α-Al_(2)O_(3), and oxides on the alloys with yttrium were α-Al_(2)O_(3) and Y_(3)Al_(5)O_(12). Oxide adherence of FeCrAl0.5Y alloy was mainly improved by the keying effect of Y_(3)Al_(5)O_(12) pegs at the oxide?alloy interface.
机译:通过质量增益测量,研究了钇含量较低的FeCrAl合金在氧气-水蒸气(47%(体积))下最多5个循环(一个循环= 18ks)下的高温抗氧化性,方法是通过质量增益测量,剥落的氧化物X射线衍射,扫描电子显微镜和场发射-透射电子显微镜-能量色散光谱。 FeCrAl,FeCrAl0.1Y和FeCrAl0.2Y合金上的氧化膜剥落,但是,FeCrAl0.5Y合金上的氧化膜在循环氧化过程中表现出良好的氧化物粘附性。所有合金上的氧化物主要为α-Al_(2)O_(3),钇合金上的氧化物为α-Al_(2)O_(3)和Y_(3)Al_(5)O_(12 )。 YCr(3)Al_(5)O_(12)钉在氧化物合金界面处的键控作用主要改善了FeCrAl0.5Y合金的氧化物粘附性。

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