Obtaining Ceramic Based on Si3N4 and TiN by Spark Plasma Sintering

Evdokimov, A. A.; Сивков, А. А.; Gerasimov, D. Yu.

doi:10.1007/s10717-016-9794-y

Cited by 9 publications

(4 citation statements)

References 12 publications

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“…Besides, a ceramic-based on titanium nitride (50 wt.%) and Si 3 N 4 (50 wt.%) achieved the hardness value of 8.8 GPa. 119 Ahmad et al fabricated Si 3 N 4 -TiN composites by planetary ball milling followed by SPS. They showed that SPS was able to produce dense Si 3 N 4 -TiN composites with high hardness due to improved densification at lower sintering temperatures compared to conventional sintering techniques.…”

Section: Mechanical Thermal and Tribological Performance Of Spsed Si3n4 Ceramicsmentioning

confidence: 99%

A study on fabrication of silicon nitride-based advanced ceramic composite materials via spark plasma sintering

Mir

Ahmad

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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The present study provides an overview of the fabrication of silicon nitride (Si3N4)-based advanced ceramic materials using spark plasma sintering. Being an excellent engineering ceramic material, silicon nitride is extensively being used in tribological components, aerospace, and automotive industries due to its unique blend of thermo-mechanical, tribological, and chemical properties. The selection of the sintering process, as well as sintering aids, strongly affects the properties of silicon nitride ceramics. Several conventional sintering techniques have been utilized in the past to optimize the structure and properties of silicon nitride ceramics such as hot pressing. However, spark plasma sintering, a relatively new, non-conventional, powder consolidating technique has recently gained significant attention to fabricate silicon nitride ceramic due to high heating rates, extremely short sintering time, and relatively low sintering temperatures which renders it an ideal technique for mass production. Both the composition and concentration of sintering additives during processing play a vital part in achieving the final desired properties of the bulk silicon nitride ceramic materials. In this review, the critical aspects like the effects of additive composition, additive concentration, and sintering parameters on microstructure and bulk properties of silicon nitride ceramics fabricated via spark plasma sintering are presented. The review may come in handy for scientists and engineers concerned with fabricating future silicon nitride composites with desired properties and performance for different engineering applications.

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Section: Mechanical Thermal and Tribological Performance Of Spsed Si3n4 Ceramicsmentioning

confidence: 99%

A study on fabrication of silicon nitride-based advanced ceramic composite materials via spark plasma sintering

Mir

Ahmad

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…TiB 2 is one of the UHTC that has received a lot of attention due to its impressive list of properties, which includes a higher hardness (33 MPa), higher melting point (3225 °C), abrasive resistance, less heat expansion coefficient, and higher Young’s modulus (530 MPa) [ 5 ]. TiB 2 ′s unique properties have made it useful in a variety of contexts, such as a component in armor, cutting tools, and as components that are resistant to corrosion and wear [ 8 ]. The covalent solid bonding and melting point of TiB 2 , the surface oxide layer of B 2 O 3 and TiO 2 that serves as impurities, and the weak self-diffusing coefficient of undoped TiB 2 all make its consolidation difficult.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Characteristics, and Wear Performance of Spark Plasma Sintered TiB2–Si3N4 as Affected by B4N Doping

Ramesh¹,

Showman

Abraar

et al. 2022

Materials

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This study aims to analyze the effect of boron nitride (B4N) additive (3–6%) on the densification, microstructure, mechanical properties, and wear performance of TiB2–15%Si3N4 and TiB2–30%Si3N4 sintered composites. When the B4N (3%) was added to the TiB2–30Si3N4 composite, the density increased to 99.5%, hardness increased to 25.2 MPa, and the fracture toughness increased to 4.62 MPam1/2. Microstructural analysis shows that in situ phases such as TiB2 help to improve the relative mechanical characteristics. However, raising the B4N additive to 6% in the above-sintered composite reduces the composites’ relative density and hardness. The tested sintered composites demonstrated that their superior wear resistance can be attributed to their increased density and hardness.

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“…For the reinforcement to play its role efficiently, some characteristics such as chemical compatibility and similar coefficients of thermal expansion should be considered [11]. Among the silicon nitride composites, the most important are Si 3 N 4 -SiC [12,13], Si 3 N -ZrB 2 , Si 3 N 4 -BN and Si 3 N 4 -TiN [14][15][16][17][18][19][20][21][22][23]. The Si 3 N 4 -TiN composite is used in structural and studied for biomedical applications due to its high mechanical strength, low density, and good electrical properties.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of dispersed TiN particles in the Si 3 N 4 matrix makes it possible to obtain materials with high fracture toughness and flexural strength, high hardness, high chemical and wear resistance and high melt temperature [14,15]. As the TiN second phase presents considerable electrical conductivity, a reduction occurs in the electrical resistivity of the material, allowing its machining by electric discharge [16][17][18][19][20][21][22]. In the present study, we investigated the effect of different contents of TiN in densification and microstructure of Si 3 N 4 -TiN composites also using Al 2 O 3 and Y 2 O 3 as sintering aids.…”

Section: Introductionmentioning

confidence: 99%

Densification and microstructure of Si3N4-TiN ceramic composites

2019

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Silicon nitride is a ceramic material widely used in various structural applications at high temperatures owing to its excellent combination of mechanical and thermal properties. To increase the application of Si 3 N 4 , many researches have been developed to improve its fracture toughness and processing conditions. In this study, the sintering and microstructure of Si 3 N 4-TiN composites, containing Al 2 O 3 and Y 2 O 3 as sintering aids, were studied. Samples were obtained by the conventional method of mixing powders and sintered at 1750 ºC/1 h and 1815 ºC/1 h under nitrogen atmosphere. Density values of the samples were determined by the Archimedes method, reaching values between 96.9% and 98.0% of theoretical density, with a porosity of less than 0.5%. The sintered samples were analyzed by X-ray powder diffraction and scanning electron microscopy. The results showed the materials reached high fracture toughness, low hardness and a microstructure with TiN grains dispersed in a β-Si 3 N 4 matrix containing an amorphous intergranular phase.

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Obtaining Ceramic Based on Si3N4 and TiN by Spark Plasma Sintering

Cited by 9 publications

References 12 publications

A study on fabrication of silicon nitride-based advanced ceramic composite materials via spark plasma sintering

A study on fabrication of silicon nitride-based advanced ceramic composite materials via spark plasma sintering

Microstructure, Mechanical Characteristics, and Wear Performance of Spark Plasma Sintered TiB2–Si3N4 as Affected by B4N Doping

Densification and microstructure of Si3N4-TiN ceramic composites

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