Navegando por Autor "Vieira, Moema Queiroz"
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Item Corrosion and cell viability studies of graphite-like hydrogenated amorphous carbon films deposited on bare and nitrided titanium alloy.(2014) Santos, Adélia Moreira Marques dos; Batista, Ronaldo Junio Campos; Martins, Leo Anderson Meira; Ilha, Mariana; Vieira, Moema Queiroz; Miquita, Douglas Rodrigues; Guma, Fátima Costa Rodrigues; Muller, Iduvirges Lourdes; Manhabosco, Taíse MatteThis work presents a study of corrosion resistance and cell viability of carbon films on bare and nitride Ti–6Al–4V. Films deposited on bare alloy significantly improve the corrosion resistance. Unexpectedly, films deposited on nitrided alloy present delamination and cracking after 16 days. We associate film failure with the presence of pores combined with a weak film/substrate interaction that allows diffusion of ions at the interface. We found that films tend to diminish the osteoblastic cell viability and the observed variations on film roughness do not improve cell viability.