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oai:gredos.usal.es:10366/1547092025-04-30T20:18:28Zcom_10366_4368com_10366_4349com_10366_3946com_10366_3823col_10366_4369

Perera Martínez, Fidel Hugo Martínez-Vázquez, Francisco J. Miranda, Pedro Ortiz, Ángel L. Pajares, Antonia 2024-01-25T10:07:38Z 2024-01-25T10:07:38Z 2010 2099-09-09 Perera, F. H., Martínez‐Vázquez, F. J., Miranda, P., Ortiz, Á. L., & Pajares, A. (2010). Clarifying the effect of sintering conditions on the microstructure and mechanical properties of Β-tricalcium phosphate. Ceramics International, 36(6), 1929-1935. https://doi.org/10.1016/j.ceramint.2010.03.015 0272-8842 http://hdl.handle.net/10366/154709 10.1016/j.ceramint.2010.03.015 [EN]The effect of the sintering conditions (temperature and time) on the microstructure (density and grain size) and mechanical properties (hardness, elastic modulus, and strength) of β-tricalcium phosphate (β-TCP) bioceramics fabricated from Ca-deficient commercial powders is analyzed. Contrary to current general opinion, it is demonstrated that the optimal sintering temperature to maximize the mechanical performance of this β-TCP material is not necessarily below the β ↔ α transformation temperature (1125 °C). In particular, optimal performance was achieved in samples sintered at 1200 °C for 3 h, since it was not until higher temperatures or longer sintering times that microcracking develops and mechanical properties are degraded. It is argued that the residual stresses developed during this reversible transformation do not lead to microcrack propagation until sufficiently large starting flaws develop in the microstructure as a consequence of grain growth. Implications of these findings for the processing routes to improve sintering of this important bioceramic are discussed. eng Elsevier Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/embargoedAccess Condiciones de sinterización Propiedades mecánicas Fosfato tricálcico β-TCP A. Sintering C. Mechanical properties Tricalcium phosphate 3313 Tecnología E Ingeniería Mecánicas 2211.19 Propiedades Mecánicas Clarifying the effect of sintering conditions on the microstructure and mechanical properties of β-tricalcium phosphate info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://doi.org/10.1016/j.ceramint.2010.03.015 Ceramics International 36 6 1929 1935