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New Approach to the β→α Polymorphic Transformation in Magnesium-Substituted Tricalcium Phosphate and its Practical Implications

AuthorsGarcía Carrodeguas, Raúl; Aza Moya, Antonio H. de; Turrillas, Xavier ; Pena, Pilar; Aza Pendas, Salvador de
Issue Date21-Jul-2009
AbstractThe transformation b-a in Mg-substituted Ca3(PO4)2 was studied. The results obtained showed that, contrary to common belief, there is, in the system Mg3(PO4)2–Ca3(PO4)2, a binary phase field where b1a-Ca3(PO4)2 solid solutions coexist. This binary field lies between the single-phase fields of b- and a-Ca3(PO4)2 solid solution in the Ca3 (PO4)2-rich zone of the mentioned system. In the light of the results and the Palatnik–Landau’s Contact Rule of Phase Regions, a corrected phase equilibrium diagram has been proposed. The practical implications of these findings with regard to the synthesis of pure a- and b- Mg-substituted Ca3(PO4)2 powders and to the sintering of related bioceramics with improved mechanical properties are pointed out
Publisher version (URL)10.1111/j.1551-2916.2008.02294.x
Appears in Collections:(ICV) Artículos
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