VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Processing optimization and toxicological evaluation of “lead-free” piezoceramics: A KNN-based case study [Elektronski vir]
    Iacomini, Antonio ...
    Due to the ever-increasing limitations of the use of lead-based materials, the manufacturing of lead-free piezoceramics with competitive piezoelectric properties and established nontoxicity is ... considered a priority for the scientific and industrial community. In this work, a lead-free system based on sodium potassium niobate (KNN), opportunely modified with MgNb2O6 (MN), was prepared through a combination of a mechanochemical activation method and air sintering, and its toxicity was evaluated. The effect of the mechanical processing on the microstructure refinement of the processed powders was established by X-ray diffraction and the average crystallite size content of the Nb2O5 species was evaluated. The experimental evidence was rationalized using a phenomenological model which permitted us to obtain the amount of powder processed at each collision and to optimize the activation step of the pre-calcined reagents. This influenced the final density and piezoresponse of the as-sintered pellets, which showed optimal properties compared with other KNN systems. Their toxicological potential was evaluated through exposure experiments to the pulverized KNN-based pellets, employing two widely used human and environmental cellular models. The in vitro assays proved, under the selected conditions, the absence of cytotoxicity of KNN-bases systems here studied.
    Vir: Materials [Elektronski vir]. - ISSN 1996-1944 (Vol. 14, iss. 15, 2021, str. 1-13)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2021
    Jezik - angleški
    COBISS.SI-ID - 166490883

    Povezava(-e):

    https://www.mdpi.com/1996-1944/14/15/4337
    DOI

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