几种Ni-Cr-Al墓低偏析高温合金的抗氧化性能研究

中国腐蚀与防护学报

1996, Vol. 16

Issue (4): 293-297

研究报告

本期目录 | 过刊浏览

几种Ni-Cr-Al墓低偏析高温合金的抗氧化性能研究

胡武生;李铁藩;沈嘉年

中国科学院金属腐蚀与防护研究所

HIGH TEMPERATURE OXIDATION OF SEVERAL Ni-Cr-Al LOW SEGREGATION SUPERXLLOYS

HU Wushing; LI Tiefan; SHEN Jianian (State Key Laborutory Of Corrosion and Protection; Institute of Corrosion and Protection of Metals; Chinese Academy of Sciences; Shenyang 110015)

全文: PDF(1171 KB)

摘要: 在１０００～１１００℃之间，对三种Ｃｒ、Ａｌ含量及微量元素Ｓ、Ｚｒ含量不同的Ｎｉ－Ｃｒ－Ａｌ基合金进行了恒温和循环氧化实验。结果表明，高Ｃｒ（１６Ｗｔ％），低Ａｌ（３．５Ｗｔ％）、Ｓ（０．００５ｗｔ％）含量，且不含Ｚｒ的合金其氧化膜层主要由连续致密的Ｃｒ２Ｏ３外氧化层和树根状Ａｌ２Ｏ３内氧化层构成，氧化膜的粘附性较好。高Ａｌ（５ｗｔ％），低Ｃｒ（９ｗｔ％）、Ｓ（０３００５ｗｔ％）含量，且不含Ｚｒ的合金其氧化膜主要由Ａｌ２Ｏ３，ＴｉＯ２，Ｃｒ２Ｏ３构成，氧化膜的粘附性较差，但在该合金中加入０．１Ｗｔ％Ｓ和０．１Ｗｔ％Ｚｒ，氧化膜的粘附性变好，而恒温氧化速率增加。文中对实验结果进行了综合分析。

关键词 ：恒温和循环氧化, 微量元素, 氧化膜的粘附性

Abstract：Three kinds of Ni-Cr-Al alloys with different amountB of Cr, Al, Co, Ti etc. and trace elements of S and Zr were oxidized isothermally and cyclicly at 1000～1100℃. For the alloy with relatively high amount of Cr(16 wt%) and low amounts of Al(3.5 wt%) and S(≤0.005 wt%), the oxide scale formed after oxidation at steady state stage consisted of a continuous and compact protective Cr2O3 outer layer and dendritic shape Al2O3 internal oxidation zone. The scale adherence demonstrated by cyclic oxidation was fairly good. For the alloy with relatively high amount of Al(5 Wt%) and low amounts of Cr(9 wt%) and S(≤0.005 wt%), the oxide scale consisted mainly of Al2O3,TiO2, Cr2O3 and spinels and the scale adherence was rather poor, but addition of S(0.1 wt%) and Zr(0.1 wt%) into this alloy improved the scale adherence. Small amount of S(≤0.005 Wt%) had no obviously adverse effects on the adherence of Cr2O3 scale. The simultaneous additions of relatively high amounts of S(0.1 Wt%) and Zr(0.1 Wt%) increased the oxidation rate of Al2O3 forming Ni-Cr-Al alloy. The addition of small of Zr(0.1 wt%) could minimize the negative effects of S on the adherence of AlO3 scale.

Key words： Isothermal and cyclic oxidation Trace elements Scale adherence

收稿日期: 1996-08-25

基金资助:中国科学院重点课题

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引用本文:

胡武生;李铁藩;沈嘉年. 几种Ni-Cr-Al墓低偏析高温合金的抗氧化性能研究[J]. 中国腐蚀与防护学报, 1996, 16(4): 293-297.
. HIGH TEMPERATURE OXIDATION OF SEVERAL Ni-Cr-Al LOW SEGREGATION SUPERXLLOYS. J Chin Soc Corr Pro, 1996, 16(4): 293-297.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1996/V16/I4/293

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