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Reyes, Karla MiriamAuthor

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June 15, 2024
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Growth and Electrochemical Stability of Compact Tantalum Oxides Obtained in Different Electrolytes for Biomedical Applications

Publicated to: Materials Research-Ibero-American Journal Of Materials. 18 91-97 - 2015-12-01 18(), DOI: 10.1590/1516-1439.348714

Authors:

Namur, Ricardo Sanson; Reyes, Karla Miriam; Bruno Marino, Claudia Eliana
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Affiliations

Univ Fed Parana, Ctr Politecn, Programa Posgrad Ciencias & Engn Mat PIPE, BR-81531990 Curitiba, Parana, Brazil - Author
Univ Fed Parana, Dept Engn Mecan, Lab Biomat & Eletroquim, BR-81531990 Curitiba, Parana, Brazil - Author

Abstract

Tantalum has been cited to have many biomaterial applications, exhibiting biocompatibility and outstanding corrosion resistance. Tantalum may be covered with tantalum oxide using the electrochemical process of anodic oxidation. The oxide surface is known to be bioactive and more corrosion resistant. In this research, compact tantalum oxide films were obtained by potentiostatic and potentiodynamic methods in H2SO4 and H3PO4 (1 mol.L-1) electrolytes. By XPS analysis the stoichiometry Ta2O5 was detected. The thermodynamic stability of those oxides was compared and the results indicated that Ta2O5 obtained in H2SO4 has higher thermodynamic stability than Ta2O5 obtained in H3PO4. The incorporation of (PO4)(3-) ions and the formation of a bilayer oxide are responsible for the reduced stability. Also, the better control of chemical kinetic of oxide formation allows potentiodynamic oxides to be more stable. Ta2O5 shows spontaneous dissolution in artificial blood, nevertheless, it remains stable even after 60 days of immersion. By scratching tests was possible to notice that Ta2O5 is highly adherent to the tantalum metallic substrate and by mechanical indentation was possible to measure a lower elastic modulus for the Ta2O5 than the metallic substrate, what can be considered as distinguished properties for biomedical applications.
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Keywords

Anodic oxideBiomaterialElectrochemical stabilitFilmsParameterTantalumTitanium

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Materials Research-Ibero-American Journal Of Materials due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2015, it was in position , thus managing to position itself as a Q2 (Segundo Cuartil), in the category Mechanical Engineering. Notably, the journal is positioned en el Cuartil Q4 for the agency WoS (JCR) in the category Materials Science, Multidisciplinary.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-01-20:

  • WoS: 22
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-01-20:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 11752 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

    It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

    • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
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    Leadership analysis of institutional authors

    This work has been carried out with international collaboration, specifically with researchers from: Brazil.

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