High-temperature corrosion of Fe3Al in chlorine-containing environments
High-temperature corrosion of Fe3Al in chlorine-containing environments
复制标题
Fe3Al在含氯环境中的高温腐蚀
DOI：
10.1016/s0921-5093(98)00998-8
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发表时间：
1999
期刊：
影响因子：
6.4
通讯作者：
W. D. Cho
中科院分区：
文献类型：
--
作者：
I. Kim;W. D. Cho
用热重分析、扫描电子显微镜、X射线衍射仪和能谱仪研究了Fe3Al在600-800℃的Cl2-Ar混合气体中的腐蚀行为。在600℃下，Fe3Al在0.25%Cl2-Ar中的腐蚀过程中观察到了重量增加，这是由于形成了Fe2O3，而在800℃下，由于挥发性金属氯化物、FeCl2、FeCl3和AlCl3的形成，样品在5%Cl2-Ar中持续失重。同时，在700℃下，Fe3Al在1%Cl2-Ar中的腐蚀过程中观察到了三个不同的重量变化阶段：(1)重量增加，(2)线性重量损失，(3)重量损失逐渐减少。最初的增重是由于形成了Fe2O_3，随后两个阶段的失重是由于挥发性金属氯化物FeCl2、FeCl3和AlCl3的形成。
The corrosion of Fe3Al in Cl2–Ar gas mixtures has been investigated at the temperature range of 600–800°C using thermogravimetric analysis, SEM, XRD, and EDS. Weight gain was observed during the corrosion of Fe3Al at 600°C in 0.25% Cl2–Ar, which is due to the formation of Fe2O3, while continuous weight loss of the specimen in 5% Cl2–Ar at 800°C was observed because of the formation of volatile metal chlorides, FeCl2, FeCl3, and AlCl3. Meanwhile, three distinct stages of weight change during the corrosion of Fe3Al at 700°C in 1% Cl2–Ar were observed, (1) weight gain, (2) linear weight loss, and (3) gradual decrease of weight loss. Initial weight gain is due to the formation of Fe2O3, and the weight loss in the subsequent two stages is in consequence of the formation of volatile metal chlorides, FeCl2, FeCl3and AlCl3.