Y,Ce,La对Fe-25Cr-40Ni合金高温硫化的影响

金属学报, 1989, 25(4): 89-93.

Y,Ce,La对Fe-25Cr-40Ni合金高温硫化的影响

中国科学院上海冶金研究所

关键词：硫化 , rare-earth , sulfide scale , sulfidation rate

INFLUENCE OF Y,Ce AND La ON HIGH TEMPERATURE SULFIDATION OF Fe-25Cr-40Ni SUPERALLOY

HUANG Yuanwei , HAN Yong , SUN Lanxiang , XU Zhiqiang , SHI Shengtai S. T. Shih Shanghai Institute of Metallurgy

Keywords： sulfidation , 稀土元素 , 硫化层 , 硫化速度

研究了稀土元素Y,Ce和La对Fe-25Cr-40Ni合金高温硫化的影响。当合金中稀土含量为0.1wt-％时,合金的硫化速度明显降低。Y对降低合金硫化速度的影响大于Ce和La。加入Y的合金硫化时,在硫化内层优先形成带有保护性的较致密的硫化铬,它的晶粒较细,与基体很好粘着。在硫化层结构和成分分析的基础上提出了合金加入稀土元素后的硫化机理。

The effects of Y, Ce and La on the sulfidation of alloy Fe-25Cr-40Nihave been investigated. The sulfidation rate of the alloys with RE more than 0.1wt-% is lower than that of the base alloy. The addition of Y is more effectivethan La and Ce in lowering the sulfidation rate. Based on the analyses of the struc-ture and composition of the sulfide scales. The sulfidation mechanism of the al1oyswith RE has been proposed.

参考文献

[1]
[2]
[3]

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网