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|Type:||Artigo de periódico|
|Title:||Oxygen Absorption By The Fe17sm2 Phase|
de Morais E.
|Abstract:||The results of oxygen absorption in temperatures ranging from 200 to 500 °C are reported. It was observed that the oxygen saturation limit is temperature dependent, being of 3 atoms per formula unit (at/fu) at 200 °C, 12.8 at/fu at 300 °C, 20.3 at/fu at 400 °C and 28.5 at/fu at 500 °C. This implies that above 200 °C the phase is deeply altered by oxygen absorption. Samples with absorption at 200 °C were studied as prepared and heat treated at 500 °C/40h. The results show that the heat treated samples consist of Fe17Sm2, Fe and Sm2O3. Metallographic examination and susceptibility data support the hypothesis that the as prepared samples consist of a mixture of Fe17Sm2 and interstitial Fe17Sm2O3.|
|Editor:||IEEE, Piscataway, NJ, United States|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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