Assessing Mg/Si3N4 biodegradable nanocomposites for osteosynthesis implants with a focus on microstructural, mechanical, in vitro corrosion and bioactivity aspects

Pasha, Mahammod Babar; Rao, R.N.; Ismail, Syed; Özcan, Mutlu; Prasad, P. Syam; Gupta, Manoj

doi:10.1016/j.jmrt.2022.06.085

Cited by 16 publications

(2 citation statements)

References 51 publications

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“…The figure also demonstrates the influence of TiC particle composition on the percent porosity of the AA8011 matrix, with an increasing number of TiC particles leading to an increasing trend in % porosity. Equation (4) [51] was used to apply the Archimedes principle to determine the % porosity, with porosity variations attributed to several factors such as gas entrapment during mixing and shrinkage during solidification.…”

Section: Density and Porositymentioning

confidence: 99%

Influence of TiC Particles on Mechanical and Tribological Characteristics of Advanced Aluminium Matrix Composites Fabricated through Ultrasonic-Assisted Stir Casting

Golla,

Babar Pasha,

Rao

et al. 2023

Crystals

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The present investigation highlights the development of high-performance materials in the construction materials industry, with a special focus on the production of aluminium matrix composites (AMCs) containing titanium carbide (TiC) particles. The stir casting method with ultrasonic assistance was employed to enhance the mechanical and tribological properties. ASTM standards were employed to evaluate the influence of TiC particles on density, hardness (VHN), ultimate tensile strength (UTS), and wear resistance at various TiC weight fraction percentages (0.0 wt.%, 2.0 wt.%, 4.0 wt.%, 6.0 wt.%, and 8.0 wt.%). Field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) analysis were performed to analyse the microstructural changes and elemental phases present in the synthesised composite. Results revealed that the incorporation of 8 wt.% TiC reinforcement in the metal matrix composites demonstrated significant improvements compared to the base alloy. In particular, a substantial enhancement in hardness by 32%, a notable increase of 68% in UTS, and a significant 80% rise in yield strength were observed when contrasted with the pure aluminium alloy. The tensile fracture analysis of the specimens revealed the presence of dimples, voids, and cracks, suggesting a brittle nature. To assess the wear characteristics of the composites, dry sliding wear experiments were performed using a pin-on-disc wear tester. Incorporation of TiC particles resulted in a lower coefficient of friction than the base alloy, with the lowest friction coefficient being recorded at 0.266 for 6 wt.% TiC, according to the data. FESEM and energy-dispersive X-ray spectroscopy (EDXS) were used to examine the surfaces of the worn pin. Overall, the inclusion of TiC reinforcement particles in the matrix alloy greatly enhanced the wear resistance and friction coefficient of the Al-6TiC composites. Ploughing and adhesion under lower loads and delamination under higher loads were the wear mechanisms observed in the wear test.

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Section: Density and Porositymentioning

confidence: 99%

Influence of TiC Particles on Mechanical and Tribological Characteristics of Advanced Aluminium Matrix Composites Fabricated through Ultrasonic-Assisted Stir Casting

Golla,

Babar Pasha,

Rao

et al. 2023

Crystals

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“…Ramanujan et al [15] and Junliu Ye et al [16] studied a AZ31 alloy reinforced with eggshell particulates and Ti particles and discussed various mechanical properties such as the Young's modulus, impact strength, elongation, wear behavior, etc. According to Pasha et al [17], Mg/Si 3 N 4 nanocomposites containing 1.0 vol% Si 3 N 4 nanoparticles have 1.4 times increase in tensile strength and 2 times increase in ductility while maintaining an elastic modulus of the composite that is within the range of the local cortical bone elastic modulus. Moreover, the authors immersed the nanocomposites in simulated physiological fluids to assess in vitro degradation and bioactivity and found 2.2 times reduction in degradation rate in comparison to pure Mg, and thus provided the basis for their use as biodegradable implant materials for osteosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Study on the Properties of AZ91/x-Si3N4 Composites for Their Prospective Application

Alam,

Ahmad,

Alshoaibi

et al. 2024

Applied Sciences

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Metal alloy matrix composites are generally lightweight structural materials with a high strength-to-weight ratio. They can be extensively used in various fields of modern engineering applications, such as aerospace and automotive components and biomedical engineering. This study focuses on the development and characterization of lightweight metal alloy matrix composites for industrial applications, with a particular emphasis on magnesium (Mg) alloys as a replacement for aluminum-based alloys. Mg alloys offer significant weight advantages, being 33% lighter than aluminum and 75% lighter than steel, making them highly desirable for use in various engineering fields. In the present study, Mg (AZ91) alloy reinforced with x-Si3N4 composites (x = 0, 1, 3, 5, 7, 9 wt.%) were fabricated using a liquid state process. The AZ91/x-Si3N4 composites were evaluated through physical, mechanical, wear, and microstructural characterization. The experimental results, supported by statistical analysis, demonstrated that the incorporation of Si3N4 particles amplified the mechanical properties, wear resistance, and porosity of the composites. However, the presence of the reinforced particles resulted in reduced forgeability and elongation, limiting certain deformation characteristics. The existence of the reinforced particles within the composites was confirmed through SEM analysis, providing visual evidence of their distribution and interaction within the Mg alloy matrix. Finally, it was concluded that the implication of the study could be sought for the light structural parts of aerospace, automotive, biomedical, and prosthetic applications.

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Progress in Preparation and Properties of Porous Silicon Nitride Ceramics

Zha,

Yu,

et al. 2023

Silicon

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Porous silicon nitride ceramics is a promising functional ceramic material. In recent years, the research on the preparation of porous silicon nitride ceramics within different methods has been widely investigated. First, this work reviews the main synthesis methods of Si 3 N 4 porous ceramics in detail, and compares the differences between strength and porosity caused by each method. The characteristics and advantages of different technologies under the current conditions were evaluated. Second, the dielectric properties, sound absorption properties and permeability properties of silicon nitride ceramics were compared and summarized based on the experimental results. Third, the applications fields of porous silicon nitride ceramics, such as smelting industry, catalyst carrier, sound absorption, wave-transparent, and biomedical fields were explored. Finally, the assessment of different silicon nitride ceramics preparation technologies was elaborated. This review gives an outlook on the porous silicon nitride ceramics, which shows great potential for further research in this field.

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Assessing Mg/Si3N4 biodegradable nanocomposites for osteosynthesis implants with a focus on microstructural, mechanical, in vitro corrosion and bioactivity aspects

Cited by 16 publications

References 51 publications

Influence of TiC Particles on Mechanical and Tribological Characteristics of Advanced Aluminium Matrix Composites Fabricated through Ultrasonic-Assisted Stir Casting

Influence of TiC Particles on Mechanical and Tribological Characteristics of Advanced Aluminium Matrix Composites Fabricated through Ultrasonic-Assisted Stir Casting

Comprehensive Study on the Properties of AZ91/x-Si3N4 Composites for Their Prospective Application

Progress in Preparation and Properties of Porous Silicon Nitride Ceramics

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