Sintered Steel
Mostrando 25-28 de 28 artigos, teses e dissertações.
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25. "PROCESSAMENTO, USINAGEM E DESGASTE DE LIGAS SINTERIZADAS PARA APLICAÇÕES AUTOMOTIVAS" / "OBTENTION, MACHINING AND WEAR OF SINTERED ALLOYS FOR AUTOMOTIVE APPLICATIONS"
O objetivo deste trabalho foi desenvolver potenciais materiais para aplicações automotivas, em particular como insertos para assento de válvula em motores de combustão interna à gasolina. O desenvolvimento compreendeu as etapas de processamento dos materiais via metalurgia do pó, tratamento térmico, caracterização microestrutural e mecânica, usinag
Publicado em: 2006
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26. Manufacturing of metallic porous structures to be used in capillary pumping systems
Sintered metallic porous structures have an application as capillary structures in two-phase heat transfer loops. In this work the manufacturing procedure of tubular porous structures for capillary pump application is discussed. The application of porous structures on capillary pumping systems requires porosity higher than 40% and pore size diameter lower th
Materials Research. Publicado em: 2003-12
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27. Properties of amorphous SiC coatings deposited on WC-Co substrates
In this work, silicon carbide films were deposited onto tungsten carbide from a sintered SiC target on a r.f. magnetron sputtering system. Based on previous results about the influence of r.f. power and argon pressure upon the properties of films deposited on silicon substrates, suitable conditions were chosen to produce high quality films on WC-Co pieces. D
Materials Research. Publicado em: 2003-01
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28. Influence of the radial spacing between cathodes on the surface composition of iron samples sintered by hollow cathode electric discharge
The present work reports an investigation of the influence of the radial spacing between cathodes on the iron sintering process by hollow cathode electrical discharge, with surface enrichment of the alloying elements Cr and Ni. Pressed cylindrical samples of 9.5 mm diameter and density of 7.0 ± 0.1 g/cm³ were prepared by compaction of Ancorsteel 1000C iron
Materials Research. Publicado em: 2001-10