CLAUDIO JOSE DA ROCHA
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Artigo IPEN-doc 20547 Synthesis of TiFe compound from ball milled TiHsub(2) and Fe powders mixtures2014 - FALCAO, RAILSON B.; DAMMANN, EDGAR D.C.C.; ROCHA, CLAUDIO J. da; ICHIKAWA, RODRIGO U.; DURAZZO, MICHELANGELO; MARTINEZ, LUIS G.; LEAL NETO, RICARDO M.TiFe compound was produced by high-energy ball milling of TiH2 and Fe powders, followed by heating under vacuum. TiH2 was used instead of Ti in order to avoid the strong particles adhesion to grinding balls and vial walls. Mixtures of TiH2 and Fe powders were drymilled in a planetary mill for times ranging from 5 to 40 hours. The amount of sample, number and diameter of the balls were kept constant in all experiments. After milling, samples were heated under dynamic high-vacuum for the synthesis reaction. As-milled and heat-treated materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential thermal analysis (DTA). The mean crystallite sizes and microstrains were determined by XRD line profile analysis using the Warren-Averbach method. As-milled materials presented only Fe and TiH2 phases. Nanostructured TiFe compound was formed after heat treatment. TiH2 was effective for providing low adherence of the powders during milling.Artigo IPEN-doc 06957 Effect of wax addition on Monel synthesis by high energy milling1999 - ROCHA, C.J.; ARAUJO, E.G.; NOGUEIRA, R.A.; AMBROZIO FILHO, F.Artigo IPEN-doc 09700 Combustion synthesis of high-energy ball-milled Nb+3Al powder mixtures2003 - LEAL NETO, R.M.; ROCHA, C.J.; AMBROZIO FILHO, F.Artigo IPEN-doc 09701 An investigation of the use of stearic acid as a process control agent in high-energy ball milling of Nb-Al and Ni-Al powder mixtures2003 - ROCHA, C.J.; LEAL NETO, R.M.; GONCALVES, V.S.; CARVALHO, L.L.; AMBROZIO FILHO, F.Artigo IPEN-doc 11215 Combustion synthesis of mechanically-activated Nb-Al mixtures2005 - BURACOVAS, F.; GONCALVES, V.S.; ROCHA, C.J.; LEAL NETO, R.M.Artigo IPEN-doc 11878 Mechanical activation of Nb75Al mixtures using shaker and planetary ball mills2006 - ROCHA, C.J.; GONCALVES, V.S.; LEAL NETO, R.M.Artigo IPEN-doc 14472 Mechanical activation of Nb75Al powder mixtures with different process control agents2008 - GONCALVES, V.S.; ROCHA, C.J.; LEAL NETO, R.M.Artigo IPEN-doc 16544 An investigation on the mechanical alloying of TiFe compound by high-energy ball milling2010 - FALCAO, RAILSON B.; DAMMANN, EDGAR D.C.C.; ROCHA, CLAUDIO J. da; LEAL NETO, RICARDO M.Artigo IPEN-doc 16551 The effect of mechanical activation of elemental powders on combustion synthesis of NbAlsub(3)2010 - ROCHA, C.J.; LEAL NETO, R.M.Artigo IPEN-doc 18188 Fabrication of powder from ductile U-Mo alloys for use as nuclear dispersion2012 - DURAZZO, MICHELANGELO; ROCHA, CLAUDIO J. da; MESTNIK FILHO, JOSE; LEAL NETO, RICARDO M.