Tantalum-Doped Co-Cr Alloys: Multiscale Effects on Mechanics, Surface Potential, and Biological Responses.

Beatriz da Silva Batista, Rosa Maria Viana Sousa, Samuel Filgueiras Rodrigues, Napoleão Martins Argôlo Neto, Alan Silva de Menezes, Luzeli Moreira da Silva, Pierre Basílio Almeida Fechine, Ralph Santos-Oliveira, Luciana Magalhães Rebêlo Alencar

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Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Beatriz da Silva BatistaCenter for Social Sciences, Health and Technology, Federal University of Maranhão, Advanced Unit, Imperatriz, Maranhão 65915-060, Brazil.ORCID https://orcid.org/0000-0002-4631-8917

Rosa Maria Viana SousaDepartment of Physics, Laboratory of Biophysics and Nanosystems, Federal University of Maranhão, Campus Bacanga, São Luís, Maranhão 65085-580, Brazil.

Samuel Filgueiras RodriguesFederal Institute of Education, Science and Technology of Maranhão, Monte Castelo, São Luís, Maranhão 65030-005, Brazil.

Napoleão Martins Argôlo NetoPostgraduate Program in Technologies Applied to Animals of Regional Interest, Federal University of Piauí, Teresina, Piauí 64049-550, Brazil.

Alan Silva de MenezesCenter for Social Sciences, Health and Technology, Federal University of Maranhão, Advanced Unit, Imperatriz, Maranhão 65915-060, Brazil.ORCID https://orcid.org/0000-0002-8817-0156

Luzeli Moreira da SilvaCenter for Social Sciences, Health and Technology, Federal University of Maranhão, Advanced Unit, Imperatriz, Maranhão 65915-060, Brazil.ORCID https://orcid.org/0000-0002-7233-0776

Pierre Basílio Almeida FechineAdvanced Materials Chemistry Group, Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceará, Campus do Pici, Fortaleza, Ceará 60455-760, Brazil.ORCID https://orcid.org/0000-0002-7822-2354

Ralph Santos-OliveiraBrazilian Nuclear Energy Commission, Institute of Nuclear Engineering, Laboratory of Nanoradiopharmacy and Synthesis of New Radiopharmaceuticals, Rio de Janeiro 21941-906, Brazil.ORCID https://orcid.org/0000-0002-0905-481X

Luciana Magalhães Rebêlo AlencarCenter for Social Sciences, Health and Technology, Federal University of Maranhão, Advanced Unit, Imperatriz, Maranhão 65915-060, Brazil.ORCID https://orcid.org/0000-0001-8210-2016

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cobalt-chromium (Co-Cr) alloys are valued in biomedicine for their mechanical performance and relative bioinertness. Here, Co-Cr alloys containing tantalum (Ta; 0, 3, 6, and 9 wt %) were synthesized by electric-arc melting to assess how Ta content influences bulk and surface properties across scales. X-ray Diffraction (XRD), Vickers Microhardness, Wettability, Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDS), and Atomic Force Microscopy/Kelvin Probe Force Microscopy (AFM/KPFM) were employed. Bioactivity and biocompatibility were evaluated by immersion in simulated body fluid (SBF) and cell-viability assays. Ta addition promoted the coexistence of Co allotropes (εCo and αCo) and the formation of a secondary TaCo

Identifiers

PMID42540197

DOI10.1021/acsomega.6c02438

PMCPMC13425330

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