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| SEM INVESTIGATION ON HIGH TEMPERATURE OXIDATION OF Fe-23Cr-6Al ALLOYS (WITHOR WITHOUT La, Ce AND Y ADDITIONS) |
| Mao Xiaoyu |
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Cite this article:
Mao Xiaoyu. SEM INVESTIGATION ON HIGH TEMPERATURE OXIDATION OF Fe-23Cr-6Al ALLOYS (WITHOR WITHOUT La, Ce AND Y ADDITIONS). Acta Metall Sin, 1980, 16(4): 406-498.
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Abstract High temperature oxidation of Fe-23Cr-6Al alloys with and without La, Ceand Y additions at 1300℃ in air has been studied using SEM with a wavelengthdispersive X-ray spectrometer. It is shown that the presence of the cavities formedby the condensation of vacancies caused by the outward diffusion cations resultsin a local detachment at the oxide/substrate interface. This may mainly be respon-sible for the poor oxide adhesion of the alloy without RE. The addition of REchanges the mechanism of growth of the oxide, thus accounts for the improve-ments in oxide adhesion.
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Received: 18 April 1980
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[1] Golightly, F. A., Stott, F. H. and Wood, G. C., Oxid. Metals, 10 (1976) , 163．
[2] Tien, J. K. and Pettit, F. S., Met. Trans. 3 (1972) , 1587．
[3] Felten, E. J., J. Electrochem. Soc., 108 (1961) , 490． |
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