Consolidation and mechanical properties of nanostructured hydroxyapatite–(ZrO2+ 3 mol% Y2O3) bioceramics by high-frequency induction heat sintering

Khalil, Khalil Abdelrazek; Kim, Sug Won; Kim, Hee Young

doi:10.1016/j.msea.2006.12.005

Cited by 73 publications

(36 citation statements)

References 14 publications

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“…As a general rule, ceramic oxides or metallic dispersions have been introduced as reinforcing agents [27,28]. In respect to the use of reinforcing ceramics, several attempts have been performed by the addition of aluminum or zirconium oxide to calcium phosphate matrices [29,30]. The main problems arising when developing such materials mainly concern phase decomposition as a consequence of the chemical interactions between HA and the reinforcing phases at high temperatures.…”

Section: Application Of Titanium Dioxidementioning

confidence: 99%

Composite Calcium Phosphate/Titania Scaffolds in Bone Tissue Engineering

Dapporto¹,

Tampieri²,

Sprio³

2017

Application of Titanium Dioxide

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Titanium and its alloys have been extensively used as implantation materials due to their favorable properties such as lower modulus, good tensile strength, excellent biocompatibility, and enhanced corrosion resistance. However, their intrinsic bioinertness generally prevents a direct bond with the bone on the surface especially at an early stage of implantation. In recent years, bioactive scaffolds for bone regeneration are progressively replacing bioinert prostheses in orthopedic, maxillofacial, and neurosurgery fields. Given the need of enhanced mechanical strength, several combinations of bioactive and reinforcing phases have been studied, but still no convincing solutions have been found so far. In this context, titanium oxides are light and high-resistance bioactive materials widely employed in dental and bone application due to their capacity of forming strong bonds with bone tissue via the formation of a tightly bound apatite layer on their surface. The addition of titania particles to hydroxyapatite has attracted considerable attention based on the assumption that resulting materials can enhance osteoblast adhesion and promote cell growth while also providing high strength and fracture toughness in the final composite material, thus being adequate for load-bearing applications.

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Section: Application Of Titanium Dioxidementioning

confidence: 99%

Composite Calcium Phosphate/Titania Scaffolds in Bone Tissue Engineering

Dapporto¹,

Tampieri²,

Sprio³

2017

Application of Titanium Dioxide

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“…The calcined bone pieces were crushed and then ball-milled until fine powders of apatite (BHA d mean ≤ 1 µm) was obtained [13][14][15][16][17]. BHA-powders were mixed with 50 wt.% of Al 2 O 3 d mean ≤ 1 µm fine powder.…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Effect of Yttria on the Phase Formation and Sintering of HA-Al₂O₃Biocomposites

Öksüz

Özer

2017

Acta Phys. Pol. A

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Hydroxyapatite is very-well known as the main component of hard tissues and, as such, it has attracted much attention by researchers in the recent decades. This study was aimed to present the characterization of Y2O3 doped 50 wt.% hydroxyapatite -50 wt.% Al2O3 composite materials fabricated at relatively high temperature of 1600• C. Hydroxyapatite powder was obtained from bovine bones via calcination and ball milling technique. Fine powders (≤ 1 µm) of hydroxyapatite/Al2O3 were admixed with 0.5 and 1 wt.% Y2O3 powders. Powder compacts were sintered at 1600• C for 4 h in air atmosphere. The field emission scanning electron microscopy, energy-dispersive spectroscopy and X-ray diffraction studies following the relative density measurements were conducted. Moreover, the microhardness was studied as the mechanical property of sintered samples. The effect of increasing Y2O3 content on surface morphology, elemental distribution and phase evaluation was investigated in hydroxyapatite/Al2O3 biocomposite materials. It was found that by increasing Y2O3 content, the relative density increased up to 98.8%, while the hardness increased to 863 HV (0.2) . The main phases, which were found, are Hibonite -CaO(Al2O3)6 and beta-tricalcium phosphate -Ca3(PO4)2, according to X-ray diffraction pattern.

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“…If the HA/ZrO 2 composite coating on the surface of titanium alloys can be prepared, then the combined strength of the composite coating with the titanium material will be greatly enhanced relative to that of HA coating with the titanium material. Thus the combined strength of dental-implant with the dental substrates also will be greatly increased, when it is used in the dental-implants [12][13][14][15][16][17][18][19] . Hence, it is quite necessary to study and prepare the HA/ZrO 2 composite coating on the surface of titanium materials for developing new biological ceramic materials used in bone and tooth.…”

Section: Physical Properties Of Nano-has/zro 2 Coating On Surface Of mentioning

confidence: 99%

Physical Properties of Nano-HAs/ZrO2 Coating on Surface of Titanium Materials Used in Dental-implants and its Biological Compatibility

Pang¹,

Feng²,

Internationals³

2017

JNMS

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Consolidation and mechanical properties of nanostructured hydroxyapatite–(ZrO2+ 3 mol% Y2O3) bioceramics by high-frequency induction heat sintering

Cited by 73 publications

References 14 publications

Composite Calcium Phosphate/Titania Scaffolds in Bone Tissue Engineering

Composite Calcium Phosphate/Titania Scaffolds in Bone Tissue Engineering

Effect of Yttria on the Phase Formation and Sintering of HA-Al₂O₃Biocomposites

Physical Properties of Nano-HAs/ZrO2 Coating on Surface of Titanium Materials Used in Dental-implants and its Biological Compatibility

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Consolidation and mechanical properties of nanostructured hydroxyapatite–(ZrO2+ 3 mol% Y2O3) bioceramics by high-frequency induction heat sintering

Cited by 73 publications

References 14 publications

Composite Calcium Phosphate/Titania Scaffolds in Bone Tissue Engineering

Composite Calcium Phosphate/Titania Scaffolds in Bone Tissue Engineering

Effect of Yttria on the Phase Formation and Sintering of HA-Al2O3Biocomposites

Physical Properties of Nano-HAs/ZrO2 Coating on Surface of Titanium Materials Used in Dental-implants and its Biological Compatibility

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Product

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Effect of Yttria on the Phase Formation and Sintering of HA-Al₂O₃Biocomposites