Spark plasma sintered bioceramics – from transparent hydroxyapatite to graphene nanocomposites: a review

Han, Young Hwan; Gao, Ruoqi; Bajpai, Indu; Kim, Byung Nam; Yoshida, Hidehiro; Nieto, Andy; Son, Hyoung Won; Yun, Jondo; Jang, Byung Koog; Jhung, Sungsil; Zhao, JingMing; Hwang, Kyu Hong; Chen, Fei; Shackelford, James F.; Kim, Sukyoung

doi:10.1080/17436753.2019.1691871

Cited by 9 publications

(5 citation statements)

References 157 publications

(220 reference statements)

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“…There are a lot of sintering technologies being applied in the HA field at present [21]. Some of them are Pressureless Sintering at ambient air and Spark Plasma Sintering (SPS) [22]. Application of SPS for HA coating structure formation looks promising from the viewpoint of SPS advantages such as sintering under pressure, low sintering temperature regime, low holding time, increased diffusion rate, etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Hydroxyapatite Coatings Made by Aerosol Cold Spraying–Sintering Technology

et al. 2022

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Hydroxyapatite is a widely used material used for the bioactivation of an implant’s surface. A promising hydroxyapatite coating approach is the kinetic deposition of powder particles. The possibility of solid-state deposition improvement through the merging of Aerosol Deposition and Low Pressure Cold Spraying techniques is a promising prospect for improving the deposition efficiency and the quality of coatings. The objective of the paper is to study the possibilities of hydroxyapatite coating structure modification through changes in the coating process and post-heat treatment. The novel Aerosol Cold Spraying system joining Low Pressure Cold Spraying and Aerosol Deposition was used for the deposition of coatings. The coating’s post-processing was conducted using two techniques: Spark Plasma Sintering and Pressureless Sintering. The coating’s structure was examined using scanning, transmission, and light microscopy, and X-ray diffraction. Substrate–coating bond strength was assessed using a tensile test. Homogenous buildup using Aerosol Cold Spraying of hydroxyapatite was achieved. Various pores and microcracks were visible in the sprayed coatings. The deposition process and the thermal post-processing did not lead to significant degradation of the hydroxyapatite phase. As a result of the Spark Plasma Sintering and Pressureless Sintering at 800 °C, an increase in tensile adhesion bond strength and crystal size was obtained.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Hydroxyapatite Coatings Made by Aerosol Cold Spraying–Sintering Technology

et al. 2022

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“…Graphene-based materials have been widely utilized in different ceramic systems to improve fracture toughness [23][24][25][26][27][28][29][30][31][32], tribological properties [33][34][35], oxidation resistance [30,31,36], and biocompatibility [37][38][39]. Furthermore, several studies [23,25,27,32,-40-42] have been carried out to produce graphenereinforced Si 3 N 4 based ceramics.…”

Section: Introductionmentioning

confidence: 99%

Phase analysis, mechanical properties and in vitro bioactivity of graphene nanoplatelet-reinforced silicon nitride-calcium phosphate composites

Bozkurt

Akarsu

Akin

et al. 2021

Journal of Asian Ceramic Societies

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The aim of this study is to produce highly dense Si 3 N 4 based composites with good mechanical properties and bioactivity. Si 3 N 4 ceramics without using sintering aids, Si 3 N 4-HA and Si 3 N 4-HA-GNP based composites have been produced by spark plasma sintering (SPS) at temperatures of 1525-1550°C. The effect of reinforcement type and content on the densification behavior, phase analysis, microstructural development, mechanical properties, and in-vitro bioactivity behavior of Si 3 N 4 were systematically investigated. Monolithic Si 3 N 4 that contains a high amount of β-Si 3 N 4 phase (~87 wt%) was produced by nearly full densification (~99%). Hydroxyapatite (HA) was used as a starting powder during the preparation of binary and triple composites to provide bioactivity to Si 3 N 4 , and after sintering, HA transformed into tricalcium phosphate (β-TCP and α-TCP) polymorphs. The incorporation of GNPs had a positive effect on the stability of β-TCP phases at higher sintering temperatures. The improvement in indentation fracture toughness of the samples with GNP reinforcement was mainly attributable to pull-out and crack deflection mechanisms. In-vitro bioactivity of GNP added composites enhanced with increasing α-TCP content. More calcium phosphate-based particle formation was observed in Si 3 N 4-HA-GNP composites compared to the Si 3 N 4-HA.

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“…This is the first report on SPS of HA based scaffolds containing BG fibres and powders. The SPS is a unique sintering technique that offers simultaneous compaction and sintering with less severe compaction and sintering parameters compared to the conventional compaction and sintering techniques [20]. The SPS technique uses relatively lower compaction pressure (maximum 3.67 MPa in this study) and sintering temperature (1000 °C), which prevents the fracture of glass fibres and melting/crystallization of BG, respectively.…”

Section: Introductionmentioning

confidence: 99%

Bioglass-fibre reinforced hydroxyapatite composites synthesized using spark plasma sintering for bone tissue engineering

Rizwan

Dad

Sohail

et al. 2021

PAC

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Hydroxyapatite (HA) exhibits several desirable characteristics, but it still lacks osteoinduction, which is a necessary requirement for a bone scaffold. HA-based composites with different amounts of Bioglass? (BG) were prepared using spark plasma sintering (SPS). Careful selection of the SPS parameters avoided undesirable reactions between the calcium phosphate (CaP) and bioglass (BG present in the form of powder and fibres), as confirmed through X-ray diffraction analysis. Scanning electron microscopy images of the composite scaffolds revealed a fibre like appearance of the glassy region. The in vitro bioactivity and biodegradation analyses were performed by immersing the composites in simulated body fluid (SBF) and tris(hydroxymethyl)aminomethane (Tris), respectively. The ability to obtain only the CaP phase and glassy phase with desirable bioactive and biodegradation behaviour, indicated that these SPS scaffolds can be employed as bone scaffolds for clinical trials, after further in vivo analyses.

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Spark plasma sintered bioceramics – from transparent hydroxyapatite to graphene nanocomposites: a review

Cited by 9 publications

References 157 publications

Microstructure and Properties of Hydroxyapatite Coatings Made by Aerosol Cold Spraying–Sintering Technology

Microstructure and Properties of Hydroxyapatite Coatings Made by Aerosol Cold Spraying–Sintering Technology

Phase analysis, mechanical properties and in vitro bioactivity of graphene nanoplatelet-reinforced silicon nitride-calcium phosphate composites

Bioglass-fibre reinforced hydroxyapatite composites synthesized using spark plasma sintering for bone tissue engineering

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