Crystallization study of sol–gel derived 13-93 bioactive glass powder

Nawaz Q, de Pablos-Martín A, Martins de Souza e Silva J, Berthold L, Hurle K, Contreras Jaimes AT, Sitarz M, Brauer DS, Boccaccini AR (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Journal of the European Ceramic Society Elsevier

DOI: 10.1016/j.jeurceramsoc.2020.09.052

Abstract

Multicomponent silicate bioactive glass (BG) (53SiO2‐20CaO‐6Na2O‐4P2O5‐12K2O‐ 5MgO in wt. %) (13–93 composition) was prepared via the sol–gel process. The influence of thermal treatment on the crystallization was evaluated using differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray nano-computed tomography (nano-CT). The temperature and time of the thermal treatment strongly influenced the formation of the crystalline phases. The preliminary outcomes demonstrate the possibility of tailoring the crystallinity of 13–93 BG powder in the range 5–43 wt. % by controlling the temperature and time of the heat treatment. The microstructure of powders sintered at two different temperatures (650 °C and 700 °C from 30 min to 4 h) was evaluated by TEM. X-ray nano-computed tomography (nano-CT) was used to visualize the 3D morphology and distribution of crystallization areas in the samples in powder form. A large range between the glass transformation and the crystallization temperatures is observed, which provides the prospect of a suitable material to manufacture directly 3D structures (e.g. porous scaffolds) without an intermediate processing step.

Authors with CRIS profile

Qaisar Nawaz Lehrstuhl für Werkstoffwissenschaften (Biomaterialien) Katrin Hurle Lehrstuhl für Mineralogie Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Fraunhofer-Institut für Mikrostruktur von Werkstoffen und Systemen IMWS DE Germany (DE) Martin-Luther-Universität Halle-Wittenberg (MLU) DE Germany (DE) Friedrich-Schiller-Universität Jena DE Germany (DE) University of Science and Technology (AGH) / Akademia Górniczo-Hutnicza PL Poland (PL)

How to cite

APA:

Nawaz, Q., de Pablos-Martín, A., Martins de Souza e Silva, J., Berthold, L., Hurle, K., Contreras Jaimes, A.T.,... Boccaccini, A.R. (2020). Crystallization study of sol–gel derived 13-93 bioactive glass powder. Journal of the European Ceramic Society. https://dx.doi.org/10.1016/j.jeurceramsoc.2020.09.052

MLA:

Nawaz, Qaisar, et al. "Crystallization study of sol–gel derived 13-93 bioactive glass powder." Journal of the European Ceramic Society (2020).

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