CLAUDIO JOSE DA ROCHA
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Resumo IPEN-doc 06151 Morphology of monel powder processed by high energy mill1997 - NOGUEIRA, R.A.; ARAUJO, E.G.; ROCHA, C.J.; AMBROZIO FILHO, F.Artigo IPEN-doc 08140 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 mixtures2001 - ROCHA, C.J.; LEAL NETO, R.M.; GONCALVES, V.S.; CARVALHO, L.L.; AMBROZIO FILHO, F.High energy ball milling of powders involves successive events of fracture and welding promoting mechanical alloying, fine and homogeneous dispersions could be attained. To minimize excessive cold welding during milling of ductile particles, the so called process control agents (PCAs) are added to the powder charges. These additives, mostly organic compounds, act as a coating of the particles inhibiting welding. It is known that PCAs are a source of contamination, so under this point of view its quantity much be the lowest possible. Moreover performing combustion synthesis of a powder mixture with PCA requires a pretreatment during the heating for extracting the PCA before reaction takes place, otherwise it can impair densification. In this work the use of stearic acid as PCA in milling Nb-Al and Ni-Al powder mixtures was investigated. The aim was to find a optimum quantity of that additive concerning milling action and decreased contamination.Artigo IPEN-doc 08139 Combustion synthesis of high-energy ball-milled Nb+3Al powder mixtures2001 - LEAL NETO, R.M.; ROCHA, C.J.; AMBROZIO FILHO, F.Artigo IPEN-doc 06484 Effect of wax addition on Monel synthesis by high energy milling1997 - ROCHA, C.J.; ARAUJO, E.G.; NOGUEIRA, R.A.; AMBROZIO FILHO, F.Artigo IPEN-doc 07450 Influencia da moagem com alta energia na sintese por combustao do intermetalico Nisub(3)Al2000 - ROCHA, C.J.; LEAL NETO, R.M.; DALZOCHIO, M.C.; ALVES, N.C.; AMBROZIO FILHO, F.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.