ANGELO FERNANDO PADILHA
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Artigo IPEN-doc 22673 Textura e relações de orientação em aço inoxidável duplex2006 - HERRERA, CLARA; LIMA, NELSON B. de; PADILHA, ANGELO F.Artigo IPEN-doc 22608 The effect of niobium on the oxidation behaviour of fully austenitic Fe-15%Cr-15%Ni stainless steels1995 - RAMANATHAN, L.V.; POHL, M.; PADILHA, A.F.The influence of niobium content (0.5-2.0 wt.%) on the oxidation behaviour of Fe-15% Cr-15% Ni austenitic stainless steels has been studied by cyclic oxidation tests in air at different temperatures in the range 800-1200 ºC. The isothermal oxidation rate, the scaling index and the cumulative oxide loss decreased with increasing niobium content. X-ray diffraction and fluorescence analysis of detached oxide scales revealed that the niobium in the alloy matrix facilitated the formation of chromium rich (Fe,Cr)203 and niobium containing mixed oxide near the metaumetal oxide boundary, which decreased further oxidation. SEM/EDX investigations revealed that the external oxide changed from being predominantly iron rich iron-chromium oxide to being chromium rich iron-chromium oxide.Artigo IPEN-doc 22581 Microstructure and texture of duplex stainless steel after melt-spinning processing2008 - HERRERA, C.; LIMA, N.B. de; KLIAUGA, A.M.; PADILHA, A.F.Publicação IPEN-doc 01625 Determinacao da energia de defeito de empilhamento em metais e ligas com estrutura cubica de face centrada por difracao de raios-X1988 - BORGES, J.F.A.; PADILHA, A.F.; IMAKUMA, K.Publicação IPEN-doc 03124 Livro IPEN-doc 02541 Tecnicas de analise microestrutural1985 - PADILHA, A.F.; AMBROZIO FILHO, F.Resumo IPEN-doc 02629 Analise quimica de micro-regioes1985 - NOGUEIRA, R.A.; PADILHA, A.F.Resumo IPEN-doc 02421 Determinacao da energia de defeito de empilhamento por difratometria de raios-x em metais CFC1985 - BORGES, J.F.A.; IMAKUMA, K.; PADILHA, A.F.Resumo IPEN-doc 02647 Superalloy applications in the nuclear field1984 - RAMANATHAN, L.V.; PADILHA, A.F.Resumo IPEN-doc 02552 Ocorrencia de colonias lamelares nos sistemas Mo-Ru-Pd, Mo-Ru-Rh e Mo-Ru-Rh-Pd1984 - PASCHOAL, J.O.A.; PADILHA, A.F.