Magnesium phosphate cements are chemically-bonded ceramics exhibiting high strength and good adhesive properties. In-situ investigation of the reaction of Mg-K phosphate cements, indicated that microstructural evolution is controlled by a cement densification process entailing amorphous-to-crystalline transformation during hardening. Owing to the replacement of the amorphous fraction with a material of higher density, possessing elongated crystal habit, an increase in porosity with time occurs, at variance with previous models. The beneficial effect provided by the developed interlocked lath-shaped microstructure, constituted by crystals embedded in the amorphous matrix, prevails over the detrimental role of the increased porosity, explaining the increase in mechanical strength.

Amorphous-crystalline transformation control on the microstructural evolution of magnesium phosphate cements / Viani, A.; Macova, P.; Sotiriadis, K.. - In: MATERIALS LETTERS. - ISSN 0167-577X. - 292:(2021), pp. 129630-129630. [10.1016/j.matlet.2021.129630]

Amorphous-crystalline transformation control on the microstructural evolution of magnesium phosphate cements

Viani A.
;
2021

Abstract

Magnesium phosphate cements are chemically-bonded ceramics exhibiting high strength and good adhesive properties. In-situ investigation of the reaction of Mg-K phosphate cements, indicated that microstructural evolution is controlled by a cement densification process entailing amorphous-to-crystalline transformation during hardening. Owing to the replacement of the amorphous fraction with a material of higher density, possessing elongated crystal habit, an increase in porosity with time occurs, at variance with previous models. The beneficial effect provided by the developed interlocked lath-shaped microstructure, constituted by crystals embedded in the amorphous matrix, prevails over the detrimental role of the increased porosity, explaining the increase in mechanical strength.
2021
292
129630
129630
Amorphous-crystalline transformation control on the microstructural evolution of magnesium phosphate cements / Viani, A.; Macova, P.; Sotiriadis, K.. - In: MATERIALS LETTERS. - ISSN 0167-577X. - 292:(2021), pp. 129630-129630. [10.1016/j.matlet.2021.129630]
Viani, A.; Macova, P.; Sotiriadis, K.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1315744
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