Effect of fluorapatite additive on densification and mechanical properties of tricalcium phosphate

Bouslama, Nadhem; Ayed, Foued Ben; Bouaziz, Jamel

doi:10.1016/j.jmbbm.2009.01.007

Cited by 31 publications

(18 citation statements)

References 41 publications

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“…These results are mentioned in previous works from literature [12,56]. The Differential thermal analysis (DTA) curve of the TiO 2 shows that no evolution can be obtained with the sintering temperature (Figure 1b).…”

Section: Characterization Of the Starting Powderssupporting

confidence: 77%

Sintering of the Tricalcium Phosphate-Titania-Magnesium Fluoride Composites

Ayadi¹,

Ayed²

2018

Sintering of Functional Materials

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Titania (TiO 2 ) and magnesium fluoride (MgF 2 ) can be mixed with tricalcium phosphate (β-Ca 3 (PO 4 ) 2 , β-TCP) to make bioceramic composites, which would combine the biocompatibility of the β-TCP and the high tribological properties of TiO 2 and MgF 2 for biomedical applications. The samples were characterized by different characterization techniques such as physicochemical and mechanical. The sintering of the TCP at various temperatures (1000, 1100, 1200 and 1300°C) with different percentages of titania (2.5, 5, 7.5, 10, 20, 30, 40 and 50 wt%) was studied. The performances of the TCP-TiO 2 composites increase with both the sintering temperature and the amount of titania. The highest values of the composites' (H = 270 Hv; E = 33.1 GPa and G = 15.7 GPa) were obtained with 40 wt% titania at 1200°C. Moreover, the addition of 4 wt% MgF 2 to the TCP-40 wt% TiO 2 composites leads to better mechanical properties (σ r = 27 MPa; H = 360 Hv; E = 51 GPa and G = 20 GPa) at 1200°C for 1 h. The amelioration of these properties is due to the formation of a new compound and the liquid phase which helps to fill the pores in the microstructure. The obtained performances of the TCP-TiO 2 -MgF 2 composites are similar to those of bone tissue and especially as enamel.

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Section: Characterization Of the Starting Powderssupporting

confidence: 77%

Sintering of the Tricalcium Phosphate-Titania-Magnesium Fluoride Composites

Ayadi¹,

Ayed²

2018

Sintering of Functional Materials

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“…12 However, mechanical properties are greatly reduced by the introduction of these porosities, 13,14 excluding the use of these ceramics for load-bearing applications. Mechanical properties can also be modified by parameters like the ratio HA/TCP, 14,15 the grain size, 15,16 or a chemical doping, 17,18 etc., but the effect of porosity is by far more important than all other factors. In view of possible load-bearing applications, it is therefore important to fully characterise the mechanical behaviour of porous BCP ceramics, and to describe their dependence on porosity as accurately as possible with appropriate models.…”

Section: Introductionmentioning

confidence: 99%

Influence of microporosity and macroporosity on the mechanical properties of biphasic calcium phosphate bioceramics: Modelling and experiment

Pecqueux

Tancret

Payraudeau

et al. 2010

Journal of the European Ceramic Society

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“…Among the list of available biomaterials, phosphate calcium-based materials have attracted considerable attention for orthopedics applications and are widely studied and used in dentistry and bone surgery for repairing damaged human hard tissue (bone and teeth);this is due to their biocompatibility and chemical similarity to those tissues [2,3]. More specifically, hydroxyapatite (Hap) and ᵦ tricalcium phosphate (ᵦ-TCP) are the most frequently used because of their biocompatibility and bioactivity, which can be designed under an appropriate shape and size [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%