Preparation and performance of hydroxyapatite/Ti porous biocomposite scaffolds

Fan, Xingping

doi:10.1016/j.ceramint.2019.05.178

Cited by 14 publications

(7 citation statements)

References 18 publications

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“…In the vacuum impregnation process, which is the other salt dissolving process, wear was observed from the scaffold corners over time and this method was eliminated because the scaffolds could not keep their shape [11]. The reason for this can be shown as the insufficient pressure distribution in the sharp corners of scaffolds and exposure to excessive vibration during vacuum.…”

Section: Figure 1 Soaked Scaffolds In Distilled Water For 4 H; (A) During Soaking and (B) After Soaking Scaffoldsmentioning

confidence: 99%

“…Such a homogenous dispersion indicates successful mixing of the powders before pressing, while at the same time evidence that enhanced biocompatible zones. On the other hand, such dense HA ceramics surrounding Ti will reduce the sinterability of Ti [11]. Therefore, the reinforcement fraction is very important because of its sinterability of Ti and the possibility of decomposition of HA particles at high temperatures during the sintering stage.…”

Section: Figure 8 Excessive Porogen Agglomeration During Powder Stacking To Mouldmentioning

confidence: 99%

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Challenges in the Production of Titanium–based Scaffolds Bio–functionalized with Hydroxyapatite by Powder Metallurgy Technique

Topuz¹,

Dikici²,

Gavgalı³

2021

European Journal of Science and Technology

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Recently, titanium and its alloys have remarkable interest for researchers due to their advanced mechanical, surface and biological properties. Researchers are investigating new materials, especially in the field of health, and perhaps material design is the most important criteria that exhibit the low Young's modulus of bone. Along with these criteria's most preferred are composite materials reinforced with hydroxyapatite (HA). Porous materials are preferred because they exhibit Young's modulus close to the bone. The aim of the study, the problems encountered in the production of titanium/hydroxyapatite (Ti/HA) composite scaffolds and the solutions will be emphasized. These are briefly; porogen removal, usage of different sintering furnaces, sintering atmosphere, material thickness, crack formation-propagation as a result of excessive or insufficient pressing pressure, and agglomeration of porogens during mold filling. It has been proven that the use of vertical tube furnaces under the Ar gas atmosphere has successful results compared to the use of horizontal tube furnaces and different atmospheres (vacuum or Ar gas). It has been concluded that in the composite scaffolds that have been successfully produced, micropores are formed as well as macropores, which may result from insufficient neck growth and pressing pressure. In addition, results showed that bi-modal (macro/micro porosity) pore structures may contribute to bone tissue orientation in possible biomaterial use.

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Section: Figure 1 Soaked Scaffolds In Distilled Water For 4 H; (A) During Soaking and (B) After Soaking Scaffoldsmentioning

confidence: 99%

Section: Figure 8 Excessive Porogen Agglomeration During Powder Stacking To Mouldmentioning

confidence: 99%

Challenges in the Production of Titanium–based Scaffolds Bio–functionalized with Hydroxyapatite by Powder Metallurgy Technique

Topuz¹,

Dikici²,

Gavgalı³

2021

European Journal of Science and Technology

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“…The corrosion and mechanical characteristics of a magnesium matrix composite may be altered by choosing reinforcing elements with varied content, distribution, and size. Numerous reinforcing materials have been used in this respect, including hydroxyapatite (HAP) [10], zinc oxide [11], bioactive glass (BG) [12], calcium particles [13], calcium polyphosphate particles (CPP), and calcium phosphate-based ceramics [14,15]. In addition to these materials, many oxide materials have been employed as fillers to create Mg-based composites, including alumina (Al 2 O 3 ) [16], titania (TiO 2 ) [17], zirconia (ZrO 2 ) [18], and silica (SiO 2 ) [19].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Corrosion Behavior of Silica Nanoparticle Reinforced Magnesium Nanocomposite for Bio-Implant Application

Iqbal

Ismail

2022

Materials

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In this study, magnesium (Mg)-based nanocomposites reinforced with silica (SiO2) nanoparticles were developed using the powder metallurgy process, and their mechanical and corrosion behavior were assessed. Mg-alloy AZ31 served as the matrix material, and two different weight percentages of SiO2 nanoparticles were used as filler. According to the microstructural analysis, the composite generated a Mg2Si phase as a result of SiO2 dissociating during the sintering process. The microhardness of the Mg-alloy dramatically enhanced with the addition of 3% nanosilica, although the elastic modulus remained constant. Additionally, the outcomes demonstrated that the Mg2Si phase’s development in the composite constrained the mechanism of deterioration and postponed the pace of degradation, which aided in enhancing the qualities of corrosion resistance. This nanocomposite might, thus, be thought of as a potential replacement for the traditional bio-implant materials.

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“…In fact, biocomposite materials could achieve different mechanical and biological properties [12][13][14]. Furthermore, the contact between the biocomposite and the surrounding tissue may be a function of the components [15][16]. Therefore, HA can be a suitable choice for the production of Mg/HA nanocomposites to achieve Mg and HA properties simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Hot extrusion of magnesium/hydroxyapatite composites prepared by powder metallurgy

Čavojský¹,

Nagy-Trembošová²,

Beronská³

et al. 2021

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Preparation and performance of hydroxyapatite/Ti porous biocomposite scaffolds

Cited by 14 publications

References 18 publications

Challenges in the Production of Titanium–based Scaffolds Bio–functionalized with Hydroxyapatite by Powder Metallurgy Technique

Challenges in the Production of Titanium–based Scaffolds Bio–functionalized with Hydroxyapatite by Powder Metallurgy Technique

Mechanical Properties and Corrosion Behavior of Silica Nanoparticle Reinforced Magnesium Nanocomposite for Bio-Implant Application

Hot extrusion of magnesium/hydroxyapatite composites prepared by powder metallurgy

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