RESUMO Avaliou-se o grau de passivação da superfície tanques bioprocessamento em aço AISI 316L com polimento mecânico e rugosidade média 0,8 μm. Os foram inspecionados após a sua construção diferentes condições superfície: (i) 12 meses operação industrial, (ii) adesão biofilme, (iii) tratamento química. O aparelho PassivityScan foi utilizado nas inspeções in situ do aplicando as técnicas potenc...

The AISI 316 L Stainless Steel (SS) specimens were exposed to passivation surface through two different processes including; holding in 40-vol% HNO3 at temperature of 60 ºC for 30 min and 15-vol%H2SO4 at ambient temperature for 1 hour. The corrosion behavior of specimens was evaluated in physiological solutions by electrochemical in vitro tests through linear an...

Nanohydroxyapatite-carbon nanotube composite coatings were deposited via electrophoretic deposition (EPD). AISI 316L stainless steel and ethanol were used as substrate and dispersing medium, respectively. 5%wt carbon nanotube (CNT) was used as reinforcing phase. Uniform and macrocrack-free coatings were obtained both for hydroxyapatite (HA) and HA-5%wt CNT coatings. Scanning electron micros...

Nanohydroxyapatite-carbon nanotube Nanocomposite (HA-CNT) coatings were deposited via electrophoretic deposition (EPD). Hydroxyapatite was synthesized via microwave combustion method using calcium nitrate and glycing as starting materials. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) revealed that pure hydroxyapatite nanoparticles have been synthesized. AISI 316L s...

Abstract Bone lacunae are cavities the morphology of which strongly affects damage propagation inside bone. Nevertheless, role eventual variations in their morphological features is not clear yet. In this scenario, work aims at isolating effects lacunar-like pores on mechanical response 3D printed samples. The research presents a detailed study processability those by means laser powder bed fus...