title: Nanocomposite bulk of mechanically milled Al-Pb samples consolidated pore-free by the high-energy rate forming technique.
abstract: It is shown that pore-free bulk samples were produced by the high-energy rate forming axis-symmetrical powder compaction method for different application purposes in case of the very different, immiscible Al and Pb metal pair. The starting Al-Pb nanocomposites were made by mechanical milling of atomized Al and Pb powders either in a SPEX 9000 or a Fritsch Pulverisette 4 mill. Due to the conditions that milling was carried out in air, the PbO layer, originally existing at the surface of the atomized Pb powder, ruptured and was also dispersed in the composite. The presence of the nano PbO particles was proven by XRD and TEM (BF, DF, SAED). When the energy of milling was high, the PbO crystallites became so small that they could hardly be seen by XRD technique. Local distribution of the PbO nanoparticles was still visible in a TEM, using the process diffraction method. Both XRD and SAED proved to be useful for the evaluation of the results of the milling process and compaction.
authors.affiliation: Bay Zoltán Institute of Materials Science and Technology, Budapest, Hungary.
authors.forename: Agnes
authors.initials: A
authors.lastname: Csanády
authors.forename: István
authors.initials: I
authors.lastname: Sajó
authors.forename: János L
authors.initials: JL
authors.lastname: Lábár
authors.forename: András
authors.initials: A
authors.lastname: Szalay
authors.forename: Katalin
authors.initials: K
authors.lastname: Papp
authors.forename: Géza
authors.initials: G
authors.lastname: Balaton
authors.forename: Erika
authors.initials: E
authors.lastname: Kálmán
mesh_terms: D000535:Aluminum / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects; D007854:Lead / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects; D008422:Materials Testing; D008669:Metallurgy / Q000379:methods*; D049329:Nanostructures / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D016062:Porosity; D011208:Powders / Q000032:analysis / Q000737:chemistry / Q000528:radiation effects; D011312:Pressure; D013010:Sonication
chemical_list: D011208:Powders; D007854:Lead; D000535:Aluminum