Samuel P. Bonetti
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Samuel P. Bonetti has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Carlos Roberto Grandini
Laboratório de Anelasticidade e Biomateriais, UNESP—Universidade Estadual Paulista, Bauru 17033-360, SP, Brazil
1 shared publication - Diego Rafael Nespeque Correa
Laboratory of Anelasticity and Biomaterials, School of Sciences, São Paulo State University (UNESP), Campus Bauru, Bauru 17033-360, SP, Brazil
1 shared publication - Gerson Santos de Almeida
Laboratory of Bioassays and Cellular Dynamics, Department of Chemistry and Biochemistry Institute of Biosciences, São Paulo State University (UNESP) Botucatu Campus São Paulo Brazil
1 shared publication - Jhuliene Elen Muro Torrento
Laboratory of Anelasticity and Biomaterials, School of Sciences, São Paulo State University (UNESP), Campus Bauru, Bauru 17033-360, SP, Brazil
1 shared publication - Tiago dos Santos Pereira de Sousa
Bauru Campus, São Paulo State Technological College, Bauru 17033-360, Brazil
1 shared publication - Willian Fernando Zambuzzi
Bioassays and Cell Dynamics Lab, Dept. of Chemistry and Biochemistry, Bioscience Institute, UNESP, Botucatu, 18603-100, Sao Paulo, Brazil
1 shared publication
Latest Publications
- Open Access
Surface Engineering of Non-Equiatomic TiZrNbTaMo HEA by MAO Treatment in a Cu-Rich Electrolyte for Biomedical Applications
This study evaluated the surface functionalization of a non-equiatomic TiZrNbTaMo high-entropy alloy (HEA) by micro-arc oxidation (MAO) in Cu-rich electrolytes to tailor its performance for biomedical implants. The Cu content was varied, and the resulting coatings were investigated for their morphology, phase constitution, chemical structure, wettability, and cytocompatibility. X-ray diffraction (XRD) measurements of the substrate indicated a body-centered cubic (BCC) matrix with minor HCP features, while the MAO-treated samples depicted amorphous halo with sparse reflections assignable to CaCO3, CaO, and CaPO4. Chemical spectroscopic analyses identified the presence of stable oxides (TiO2, ZrO2, Nb2O5, Ta2O5, MoO3) and the successful incorporation of bioactive elements (Ca, P, Mg) together with traces of Cu, mainly as Cu2O. MAO treatment increased surface roughness and rendered a hydrophilic behavior, which are features typically favorable to osseointegration process. In vitro cytotoxic assays with MC3T3-E1 cells (24 h) showed that Cu addition did not induce harmful effects, maintaining or improving cell viability and adhesion compared to the controls. Collectively, MAO in Cu-rich electrolyte yielded porous, bioactive, and Cu-incorporated oxide coatings on TiZrNbTaMo HEA, preserving cytocompatibility and supporting their potential for biomedical applications like orthopedic implants and bone-fixation devices.
Open AccessSurface Engineering of Non-Equiatomic TiZrNbTaMo HEA by MAO Treatment in a Cu-Rich Electrolyte for Biomedical Applications
This study evaluated the surface functionalization of a non-equiatomic TiZrNbTaMo high-entropy alloy (HEA) by micro-arc oxidation (MAO) in Cu-rich electrolytes to tailor its performance for biomedical implants. The Cu content was varied, and the resulting coatings were investigated for their morphology, phase constitution, chemical structure, wettability, and cytocompatibility. X-ray diffraction (XRD) measurements of the substrate indicated a body-centered cubic (BCC) matrix with minor HCP features, while the MAO-treated samples depicted amorphous halo with sparse reflections assignable to CaCO3, CaO, and CaPO4. Chemical spectroscopic analyses identified the presence of stable oxides (TiO2, ZrO2, Nb2O5, Ta2O5, MoO3) and the successful incorporation of bioactive elements (Ca, P, Mg) together with traces of Cu, mainly as Cu2O. MAO treatment increased surface roughness and rendered a hydrophilic behavior, which are features typically favorable to osseointegration process. In vitro cytotoxic assays with MC3T3-E1 cells (24 h) showed that Cu addition did not induce harmful effects, maintaining or improving cell viability and adhesion compared to the controls. Collectively, MAO in Cu-rich electrolyte yielded porous, bioactive, and Cu-incorporated oxide coatings on TiZrNbTaMo HEA, preserving cytocompatibility and supporting their potential for biomedical applications like orthopedic implants and bone-fixation devices.