Fabrication of 3D printed Si3N4 bioceramics with superior comprehensive performance through ZnO nanowires doping

Zeng, Xiaofeng; Sipaut, Coswald Stephen; Ismail, Noor Maizura; Liu, Yuandong; Farm, Yan yan; Peng, Bo; He, Jiayu

doi:10.1016/j.ceramint.2024.06.156

Cited by 3 publications

(3 citation statements)

References 34 publications

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“…Compared with MS sintering technology, in the case of GPS and HPS sintering technology, there are obvious impurities in the silicon nitride grain boundaries. These impurities are high-temperature liquid phase substances generated by the joint action of silicon nitride materials and additives during the sintering process 9 , 14 . These high-temperature liquid phase substances play a crucial role in the transformation of silicon nitride crystal phase at high temperatures.…”

Section: Resultsmentioning

confidence: 99%

“…After the completion of the transformation, they are ultimately retained in the silicon nitride grain boundaries due to the influence of sintering methods or the degree of liquid phase action. These grain boundary phase substances are brittle and have a significant negative impact on the mechanical properties of silicon nitride sintered materials 9 , 14 , 15 . From the microstructure shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In recent research, 3D printing can solve the problem of customizing silicon nitride bioceramic materials 12 , 21 , 23 . However, the organic content of 3D printing slurry is high, with DLP resin content exceeding 50 vol% 21 , 23 and FDM organic content also reaching 47 vol% 9 , 12 , which is prone to defects such as degreasing, cracking, and low sintering density. This is currently a major bottleneck problem hindering the preparation of dense silicon nitride bioceramics by 3D printing.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of 3D printed silicon nitride bioceramics by microwave sintering

Zeng,

Sipaut,

Ismail

et al. 2024

Sci Rep

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Silicon nitride (Si3N4) is a bioceramic material with potential applications. Customization and high reliability are the foundation for the widespread application of Si3N4 bioceramics. This study constructed a new microwave heating structure and successfully prepared 3D printed dense Si3N4 materials, overcoming the adverse effects of a large amount of 3D printed organic forming agents on degreasing and sintering processes, further improving the comprehensive performance of Si3N4 materials. Compared with control materials, the 3D printed Si3N4 materials by microwave sintering have the best mechanical performance: bending strength is 928 MPa, fracture toughness is 9.61 MPa·m1/2. Meanwhile, it has the best biocompatibility and antibacterial properties, and cells exhibit the best activity on the material surface. Research has shown that the excellent mechanical performance and biological activity of materials are mainly related to the high-quality degreasing, high cleanliness sintering environment, and high-quality liquid-phase sintering of materials in microwave environments.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of 3D printed silicon nitride bioceramics by microwave sintering

Zeng,

Sipaut,

Ismail

et al. 2024

Sci Rep

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Biological Activity of Silicon Nitride Ceramics: A Critical Review

Boschetto,

Rondinella,

Marin

2024

Materials

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The commercial use of Si3N4 ceramics in the biomedical field dates back to the early 1980s and, initially, did not show promising results, which is why their biocompatibility was not then investigated further until about 10 years later. Over the years, a change in trend has been observed; more and more studies have shown that this material could possess high biocompatibility and antibacterial properties. However, the relevant literature struggles to find mechanisms that can incontrovertibly explain the reasons behind the biological activity of Si3N4. The proposed mechanisms are often pure hypotheses or are not substantiated by comprehensive analyses. This review begins by studying the early references to the biological activity of Si3N4 and then reviews the literature regarding the bioactivity of this ceramic over time. An examination of the early insights into surface chemistry and biocompatibility lays the foundation for a detailed examination of the chemical reactions that Si3N4 undergoes in biological environments. Next, the analysis focuses on the mechanisms of bioactivity and antipathogenicity that the material exhibits both alone and in combination with modern bioglass. However, it is highlighted that despite the general consensus on the biocompatibility and bioactivity of Si3N4 ceramics, sometimes the proposed biological mechanisms behind its behavior are discordant or unsupported by the direct evaluation of specific biochemical activities. This review highlights both the reliable information in the literature and the gaps in research that need to be filled in order to fully understand the reasons behind the biological properties of this material.

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Printability Metrics and Engineering Response of HDPE/Si3N4 Nanocomposites in MEX Additive Manufacturing

Papadakis,

Petousis,

Michailidis

et al. 2024

Nanomaterials

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Herein, silicon nitride (Si3N4) was the selected additive to be examined for its reinforcing properties on high-density polyethylene (HDPE) by exploiting techniques of the popular material extrusion (MEX) 3D printing method. Six different HDPE/Si3N4 composites with filler percentages ranging between 0.0–10.0 wt. %, having a 2.0 step, were produced initially in compounds, then in filaments, and later in the form of specimens, to be examined by a series of tests. Thermal, rheological, mechanical, structural, and morphological analyses were also performed. For comprehensive mechanical characterization, tensile, flexural, microhardness (M-H), and Charpy impacts were included. Scanning electron microscopy (SME) was used for morphological assessments and microcomputed tomography (μ-CT). Raman spectroscopy was conducted, and the elemental composition was assessed using energy-dispersive spectroscopy (EDS). The HDPE/Si3N4 composite with 6.0 wt. % was the one with an enhancing performance higher than the rest of the composites, in the majority of the mechanical metrics (more than 20% in the tensile and flexural experiment), showing a strong potential for Si3N4 as a reinforcement additive in 3D printing. This method can be easily industrialized by further exploiting the MEX 3D printing method.

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Fabrication of 3D printed Si3N4 bioceramics with superior comprehensive performance through ZnO nanowires doping

Cited by 3 publications

References 34 publications

Preparation of 3D printed silicon nitride bioceramics by microwave sintering

Preparation of 3D printed silicon nitride bioceramics by microwave sintering

Biological Activity of Silicon Nitride Ceramics: A Critical Review

Printability Metrics and Engineering Response of HDPE/Si3N4 Nanocomposites in MEX Additive Manufacturing

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