The influence of Si3N4 on the microstructure, mechanical properties and the wear performance of TiB2–SiC synthesized via spark plasma sintering

Oguntuyi, Samson Dare; Malatji, N.; Shongwe, Mxolisi Brendon; Johnson, Oluwagbenga T.; Khoathane, Caroline; Tshabalala, Lerato

doi:10.1016/j.ijlmm.2022.04.004

Cited by 7 publications

(5 citation statements)

References 58 publications

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“…𝑦 𝑖 irepresents individual observations in this Eq (11). The total number of observations is given by n.…”

Section: Analysis Of Signal-to-noise (S/n) Ratiomentioning

confidence: 99%

Novel Dragonfly-assisted Black Widow Optimization Strategy to Enhance Si3N4 Wear Performance

2024

nano-ntp

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Rebuilding injured joints with appropriate substitute materials is an important requirement for treating individuals with arthritis. Aseptic loosening is a major problem due to the wear particle production that occurs during movement in artificial joints. Finding materials with the least amount of wear volume loss is the goal of biotribology research to increase joint longevity. One ceramic material that shows promise as a substitute for hip and knee replacements is silicon nitride (Si3N4). As a solid lubricant additive, Hexagonal Boron Nitride (hBN) may improve Si3N4 wear performance. With the goal of minimizing wear volume loss (WVL), this research evaluates the ideal load and hBN volume percentage in Si3N4. A mathematical model is informed by the experiments, which are carried out using the Design of Experiments (DoE) -Taguchi approach. In order to find the ideal hBN % for minimising wear volume loss against an Alumina (Al2O3) counterface, the model is processed by Dragonfly-assisted Black Widow Optimisation (DA-BWO). Taguchi technique finds 12 N load and 6% hBN volume, but DA-BWO optimization offers 10.632% hBN volume and 9.75 N load to minimise wear volume loss of Si3N4.

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“…𝑦 𝑖 irepresents individual observations in this Eq (11). The total number of observations is given by n.…”

Section: Analysis Of Signal-to-noise (S/n) Ratiomentioning

confidence: 99%

Novel Dragonfly-assisted Black Widow Optimization Strategy to Enhance Si3N4 Wear Performance

2024

nano-ntp

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“…Spark plasma sintering (SPS) is a new method used to consolidate powders [12]. Tis sintering method saves time over more conventional approaches since the powder is heated and compacted simultaneously to achieve high density with grain growth due to the rapid heating [13]. SPS can produce better mechanical properties than conventional sintering processes by reducing the sintering temperature and reducing the sintering time.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Composites

Karanam

Rathinam²,

Mouria

et al. 2023

Advances in Materials Science and Engineering

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In this research, the first work was carried out to manufacture MgO-based metal matrix composite containing 3 wt%. Sintering parameters, such as temperature, pressure, and time were subjected to Taguchi analysis to identify the most significant effect on magnesium oxide physical and mechanical characteristics. The impact of each sintering parameter explores using the analysis of variance-structure and microstructure analysis using XRD and EDS-equipped FE-SEM. The mechanical properties of the composite are evaluated by testing its Rockwell hardness (HR) and Vickers hardness (HV). The results showed that sintering temperature was the most influential of the sintering factors on microhardness. Densification at its peak was 100%, while it peaked at 62.19 Rockwell hardness and 58.7 Vickers hardness.

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“…SiC exhibit strong wear, creep, and oxidation resistance at higher temperatures but has a lesser fracture toughness [6]. Si3N4 ceramics, on the other hand, have more substantial flexural strength and fracture toughness but weaker oxidation resistance at extreme temperatures [7,8]. Si3N4-SiC composite prepared using Si3N4 powders has been widely reported with complex and expensive sintering processes such as SPS [8], Hot-pressed sintering at 1850°C [9], sintering-post-HIP at around 2000°C [10].…”

Section: Introductionmentioning

confidence: 99%

“…Si3N4 ceramics, on the other hand, have more substantial flexural strength and fracture toughness but weaker oxidation resistance at extreme temperatures [7,8]. Si3N4-SiC composite prepared using Si3N4 powders has been widely reported with complex and expensive sintering processes such as SPS [8], Hot-pressed sintering at 1850°C [9], sintering-post-HIP at around 2000°C [10]. On the other hand, using Si powders instead of Si3N4 for synthesizing Si3N4-SiC composites can have economic benefits due to the low cost of the Silicon powder.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, Microstructural, and Mechanical Behavior of SiC Composite with Insitu Formation of BN and Si3N4

Singh

Chaturvedi

et al. 2023

Silicon

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Dealing with high-temperature properties and brittleness and is always one of the hot topics in the field of ceramic materials. Extensive research has been carried out for it and Si3N4-SiC composites are one of the most promising composites. In this study, the impact of Si3N4 and BN reinforcement on the microstructure and physio-mechanical properties of SiC-based composites were explored. Two sets of composites, including Si3N4-SiC and BN-Si3N4-SiC aided with Al2O3, were fabricated using nitridation of Si and B2O3 at 1450°C. The mechanical properties, microstructure, phase transformation, densification, and porosity were depicted and discussed. X-ray diffraction patterns revealed the insitu formation of Si3N4 (both α and β phases) and BN in the final composite. The specimen with 10% Si and 10% B2O3 possessed the superior flexural strength (284.4 MPa) with excellent hardness (23.4 GPa). The incorporation of BN is found to enhance the mechanical properties especially hardness while overcoming the shortcomings of reaction-bonded Si3N4-SiC. The corresponding densification and strengthening mechanism were explained in this paper.

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The influence of Si3N4 on the microstructure, mechanical properties and the wear performance of TiB2–SiC synthesized via spark plasma sintering

Cited by 7 publications

References 58 publications

Novel Dragonfly-assisted Black Widow Optimization Strategy to Enhance Si3N4 Wear Performance

Novel Dragonfly-assisted Black Widow Optimization Strategy to Enhance Si3N4 Wear Performance

Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Composites

Fabrication, Microstructural, and Mechanical Behavior of SiC Composite with Insitu Formation of BN and Si3N4

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