Araujo, Jose HumbertoCabral, F. A. O.Araujo, R. C.Gama, S.2021-11-292021-11-291998-10-13CABRAL, F. A. O. ; de Araujo, J. H. ; Araujo, R. C. ; GAMA, S. . A Mossbauer study of plasma nitrided iron. Journal of Applied Physics, v. 83, p. 6932, 1998. Disponível em: https://aip.scitation.org/doi/10.1063/1.367712 Acesso em: 28 mai 2020. DOI: https://doi.org/10.1063/1.367712.https://repositorio.ufrn.br/handle/123456789/45064Iron powder has been nitrided in a glow discharge plasma of a mixture of nitrogen and hydrogen, in order to verify the existence of a metastable iron nitrogen solid solution, previously observed from the Sm2Fe17N3 phase decomposition process. Our results show that, for short nitridation times, we obtain a mixture of Fe4N, a small amount of α-Fe and an iron nitrogen solid solution the amount of which increases after heat-treatment at 610 °C. This iron nitrogen solid solution is characterized by Mössbauer spectroscopy which shows a typical α-Fe spectrum, but with lower hyperfine field and broader linewidth. TMA measurements show that the Curie temperature is similar to that of α-Fe.MössbauerPlasmanitridedIronarticle10.1063/1.367712