ANGELO FERNANDO PADILHA
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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.Artigo IPEN-doc 05396 Textura de deformacao e de recristalizacao em chapas de aco inoxidavel ferritico-austenitico com microestrutura duplex1994 - LIMA, N.B.; MITTEREGGER, L.M.F.G.; REICK, W.; PADILHA, A.F.Artigo IPEN-doc 09497 In vitro corrosion resistance of a superferritic stainless steel in Hank's solution2003 - ASSIS, S.L.; ROGERO, S.O.; PADILHA, A.F.; COSTA, I.Artigo IPEN-doc 08202 On the sinterability of commercial-purity niobium1999 - SANDIM, H.R.Z.; PADILHA, A.F.Artigo IPEN-doc 03214 The influence of niobium on the oxidation of all-austenite stainless steels1987 - RAMANATHAN, L.V.; PADILHA, A.F.Tese IPEN-doc 16312 Artigo IPEN-doc 20051 Gamma - phase homogenization and texture in U-7.5Nb-2.5Zr (Mulberry) alloy2014 - LOPES, DENISE A.; RESTIVO, THOMAZ A.G.; LIMA, NELSON B. de; PADILHA, ANGELO F.Artigo IPEN-doc 18314 Recristalização e textura cristalografica de chapas produzidas por lingotamento contínuo e semicontínuo da liga de alumínio AA40062012 - SOUZA, FABRICIO M.; PLAUT, RONALD L.; LIMA, NELSON B. de; FERNANDES, RICARDO do C.; PADILHA, ANGELO F.Artigo IPEN-doc 18223 Um estudo comparativo entre chapas produzidas pelos processos de lingotamento contínuo e de lingotamento semicontínuo da liga AA4006: microestrutura e textura cristalográfica2012 - SOUZA, FABRICIO M.; LIMA, NELSON B. de; PLAUT, RONALD L.; FERNANDES, RICARDO do C.; PADILHA, ANGELO F.