Microstructural and mechanical investigation of hydroxyapatite–zirconia nanocomposites prepared by spark plasma sintering

Gergely, Gréta; Şahin, Filiz Çınar; Göller, Gültekin; Yücel, Onuralp; Balázsi, Csaba

doi:10.1016/j.jeurceramsoc.2013.01.027

Cited by 14 publications

(9 citation statements)

References 20 publications

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“…The hardness of pure HAP sintered at 600°C showed 3.9 ± 0.2 GPa and 3 point bending strength was 58 ± 5 MPa from our previous work [36]. This fact proves that the addition of graphene may the positive effect of mechanical properties of composite.…”

Section: Thermodynamic Calculationsupporting

confidence: 61%

Spark plasma sintering of graphene reinforced hydroxyapatite composites

Klébert

Balázsi

et al. 2015

Ceramics International

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Section: Thermodynamic Calculationsupporting

confidence: 61%

Spark plasma sintering of graphene reinforced hydroxyapatite composites

Klébert

Balázsi

et al. 2015

Ceramics International

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“…Gergely et al [51] studied microstructural and mechanical properties of ZrO 2 /HAp nanocomposites obtained by spark plasma sintering (SPS). To prevent the reaction between ZrO 2 and nHAp and decomposition of nHA, the SPS method was carried out at short dwelling time (5 min) and low temperatures.…”

Section: Hap-zirconia Nanocompositementioning

confidence: 99%

Hydroxyapatite Consolidated by Zirconia: Applications for Dental Implant

Sharifianjazi

Pakseresht

Asl

et al. 2020

jcc

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“…The density of the pure HA increased from 2.31±0.02 to 3.06±0.02 g/cm 3 . The density of the pure HA sintered at 1300 °C is reasonably close to the theoretical density of 3.156 g/cm 3 for the HA ceramics [74].…”

Section: Resultsmentioning

confidence: 94%

The effect of lanthanum addition on the microstructure and mechanical properties of Mg-modified hydroxyapatite ceramics

Pazarlıoğlu

Algan

Isikogullari

et al. 2021

PAC

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In the present paper, the effect of La2O3 (0.25, 0.5 and 1 wt.%) addition on the phase stability, porosity, density, hardness, fracture toughness, compressive strength and brittleness index of hydroxyapatite modified with 1 wt.% of MgO was investigated. Hydroxyapatite (HA) without additives sintered at 1300?C has mixture of dominant hydroxyapatite phase with beta-tricalcium phosphate (?-TCP), alpha-tricalcium phosphate (?-TCP) and calcium oxide (CaO) phases. The microstructure is characterized with transgranular microcracks and oversized grains. Although the density and hardness of the pure HA increased with increasing temperature, a steady decrease in fracture toughness (from 0.96 to 0.71MPa?m1/2) and compressive strength (from 130.2 to 65.6MPa) was observed. For the HA modified with 1 wt.% of MgO the highest compressive strength (183.2MPa) and fracture toughness (1.47MPa?m1/2) were obtained at 1200?C and at this temperature the brittleness index was 3.24 ?m-1/2. Increase in the sintering temperature led to the increase of the brittleness index of the pure HA,MgO modified HA and La2O3-MgO modified HA samples. The addition of 1 wt.%La2O3 to 1 wt.% MgO-HA contributed to the increase in the compressive strength of about 10%(from 183.2 to 202.0MPa), fracture toughness of about 69% (from 1.37 to 2.32MPa?m1/2) and also decrease of the brittleness index from 3.24 to 2.18 ?m-1/2. The best performance after sintering at 1300?C was obtained for the MgO-HA sample with 0.25wt.% La2O3. As a result of this study, a new candidate material for biomedical application with superior mechanical properties and the phases that do not cause adverse reactions in the human body could be 1 wt.% MgO-HA modified with 1 wt.% La2O3 and sintered at 1200?C.

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Microstructural and mechanical investigation of hydroxyapatite–zirconia nanocomposites prepared by spark plasma sintering

Cited by 14 publications

References 20 publications

Spark plasma sintering of graphene reinforced hydroxyapatite composites

Spark plasma sintering of graphene reinforced hydroxyapatite composites

Hydroxyapatite Consolidated by Zirconia: Applications for Dental Implant

The effect of lanthanum addition on the microstructure and mechanical properties of Mg-modified hydroxyapatite ceramics

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