High-pressure synthesis of high-performance submicron-sized polycrystalline β-Si3N4 bulk without additives

Hou, Zhiqiang; Wang, Haikuo; Yang, Yanan; Song, Xudong; Chen, Shuaipeng; Wan, Shun; Zhao, Xinyuan; Shang, Mengya; Chen, Bin

doi:10.1016/j.ceramint.2020.02.007

Cited by 17 publications

(10 citation statements)

References 44 publications

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“…The measured Vickers hardness H V of the submicron-sized polycrystalline β-Si 3 N 4 could reach up to about 20 GPa, approaching the upper limit of single crystal β-Si 3 N 4 . 70 The maximum asymptotic Vickers hardness is 25.5 GPa for WB 2 with a grain size of 300 nm which is a 10% increase compared to WB 2 with a grain size of 3 µm. The Vickers indentation test showed that the Vickers hardness of WB 2 decreased as the grain size grew larger.…”

Section: Super-hard Materialsmentioning

confidence: 86%

High pressure: a feasible tool for the synthesis of unprecedented inorganic compounds

Wang

Liu

2020

Inorg. Chem. Front.

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Section: Super-hard Materialsmentioning

confidence: 86%

High pressure: a feasible tool for the synthesis of unprecedented inorganic compounds

Wang

Liu

2020

Inorg. Chem. Front.

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“…They generally require the addition of sintering aids or the application of high temperature and high pressure to achieve good sintering. [13][14][15][16] Furthermore, silicon nitride has high hardness, 17 making it difficult to process the material. The above-mentioned factors make it difficult to prepare special-shaped parts required for human implants using silicon nitride-based materials, limiting the development of silicon nitride-based bioceramic materials.…”

Section: Introductionmentioning

confidence: 99%

Improved sintering performance of β-SiAlON–Si₃N₄ and its osteogenic differentiation ability by adding β-SiAlON

Zhang

et al. 2022

J Biomater Appl

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To improve the sintering performance of silicon nitride bioceramics, we explored the effect of β-SiAlON’s Z-value on the physical, chemical, and biological properties of β-SiAlON–Si3N4 composites. Results showed that the phase product was β-Si3N4. As the Z-value increased, the X-ray diffraction peaks gradually shifted to a smaller angle, the material grains were more tightly packed, and the bulk density and compressive strength increased, reaching the highest values (2.71 g/cm3 and 1157 MPa, respectively) at Z = 4. Soaking and ion-release experiments show that in an aqueous environment, a small amount of Al and Si ions were released, and no obvious decomposition occurred on the surface of the material. The biological performance showed that the growth of cultured cells in each group was in good condition, there was no obvious difference in morphology and adhesion, and the materials had good biological performance. An increase in the Z-value promotes the formation of mineralized nodules and osteogenic differentiation of MC3T3-E1 cells, which may be because the release of Si can promote osteogenic differentiation. Therefore, the addition of β-SiAlON could improve the sintering performance of β-Si3N4 without degrading its biological properties. The prepared β-SiAlON–Si3N4 composite ceramic is a latent bioceramic material.

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“…In most of the studies in the literature, high fracture toughness for monolithic Si 3 N 4 or Si 3 N 4 -based composites were achieved with the formation of interlocking microstructure consisting of large elongated ~100% β-Si 3 N 4 grains sintered with the additions of Al 2 O 3 , MgO, and rare earth oxides (Y 2 O 3 , CeO 2 , etc.). Producing dense Si 3 N 4 is difficult because of strong covalent bonding and low-self diffusion coefficients [43][44][45]. Si 3 N 4 ceramics are commonly produced with the aid of additives which provide liquid phase sintering [43].…”

Section: Introductionmentioning

confidence: 99%

“…Si 3 N 4 ceramics are commonly produced with the aid of additives which provide liquid phase sintering [43]. No-additive sintering can also be used as an alternative method to achieve dense Si 3 N 4 [43][44][45]. In the present study, sintering processes were performed in the absence of additives not to deteriorate the biocompatibility of Si 3 N 4 .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, there are many results in the literature regarding the advantages of the production of Si 3 N 4 ceramics using SPS [2]. Thus, different Si 3 N 4 -based ceramics were produced by this method; however, only a limited number of studies [2,[43][44][45][46] focused on the processing of Si 3 N 4 ceramics without using sintering additives.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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High-pressure synthesis of high-performance submicron-sized polycrystalline β-Si3N4 bulk without additives

Cited by 17 publications

References 44 publications

High pressure: a feasible tool for the synthesis of unprecedented inorganic compounds

High pressure: a feasible tool for the synthesis of unprecedented inorganic compounds

Improved sintering performance of β-SiAlON–Si₃N₄ and its osteogenic differentiation ability by adding β-SiAlON

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

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High-pressure synthesis of high-performance submicron-sized polycrystalline β-Si3N4 bulk without additives

Cited by 17 publications

References 44 publications

High pressure: a feasible tool for the synthesis of unprecedented inorganic compounds

High pressure: a feasible tool for the synthesis of unprecedented inorganic compounds

Improved sintering performance of β-SiAlON–Si3N4 and its osteogenic differentiation ability by adding β-SiAlON

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

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Improved sintering performance of β-SiAlON–Si₃N₄ and its osteogenic differentiation ability by adding β-SiAlON