Effects of cobalt on structure and properties of TiC0.3N0.7-TiB2 matrix composite ceramics prepared by self-reactive spray forming method

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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“…Besides, Ti(C, N) phase shows a small friction coefficient against steels and Ni-based alloys. [166][167][168] Concluding remarks and future plan…”

Section: Mechanical Thermal and Tribological Performance Of Spsed Si3n4 Ceramicsmentioning

confidence: 97%

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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“…Also Figueiredo et al discussed the tribological behavior of TiCN in ambient air and found that the presence of C–H bonds in the wear track was helpful to achieve low friction during sliding. However, common operations for TiCN are either: (a) to prepare TiCN coating by magnetron sputtering, or (b) to directly add TiCN powder into matrices to fabricate bulk by hot‐pressing sintering . For TiCN coating, the preparation process is multistep and time‐consuming.…”

Section: Introductionmentioning

confidence: 99%

Temperature‐driven wear behavior of Si₃N₄‐based ceramic reinforced by in situ formed TiC_0.3N_0.7 particles

et al. 2019

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Si 3 N 4 as a structural ceramic is desirable for applications in spacecraft, transportation, and energy, but its poor high-temperature properties still do not satisfy the actual requirements. Here, a TiC 0.3 N 0.7 reinforced Si 3 N 4 ceramic is successfully designed and fabricated via the high-temperature nitridation of TiC x . It is found that TiC 0.3 N 0.7 grains with the size of 1-2 μm are uniformly dispersed in the Si 3 N 4 matrix and show a firm bond with substrate. Compared with pure Si 3 N 4 , the doping of harder TiCN phase can effectively improve ceramic's hardness and fracture toughness at a certain temperature. Importantly, the ceramic material displays extraordinary wear resistance across a wide temperature range (eg, the wear rate of TiC 0.3 N 0.7 containing Si 3 N 4 over 63 times and 178 times better than pure Si 3 N 4 at 600 and 900°C, respectively). More broadly, a correlation between wear mechanism and temperature is established, and the result shows that the mechanical strength and tribochemical oxidation as two key factors determine the wear behavior of the material. These results developed here can provide a springboard for preparation and optimization of multiphase ceramics that serve under hightemperature conditions. K E Y W O R D S high temperature, mechanical properties, nitridation, Si 3 N 4 , wear/wear resistance

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“…These results showed that TiO 2 was an appropriate sintering additive, particularly for mechanical properties. XRD showed that TiO 2 can react with Si 3 N 4 and N 2 to form TiN, thus helping to improve the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

High thermal conductivity silicon nitride ceramics prepared by pressureless sintering with ternary sintering additives

Duan

Zhang

et al. 2019

Int J Applied Ceramic Tech

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Silicon nitride ceramics were pressureless sintered at low temperature using ternary sintering additives (TiO2, MgO and Y2O3), and the effects of sintering aids on thermal conductivity and mechanical properties were studied. TiO2–Y2O3–MgO sintering additives will react with the surface silica present on the silicon nitride particles to form a low melting temperature liquid phase which allows liquid phase sintering to occur and densification of the Si3N4. The highest flexural strength was 791(±20) MPa with 12 wt% additives sintered at 1780°C for 2 hours, comparable to the samples prepared by gas pressure sintering. Fracture toughness of all the specimens was higher than 7.2 MPa·m1/2 as the sintering temperature was increased to 1810°C. Thermal conductivity was improved by prolonging the dwelling time and adopting the annealing process. The highest thermal conductivity of 74 W/(m∙K) was achieved with 9 wt% sintering additives sintered at 1810°C with 4 hours holding followed by postannealing.

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Effects of cobalt on structure and properties of TiC0.3N0.7-TiB2 matrix composite ceramics prepared by self-reactive spray forming method

Cited by 7 publications

References 14 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

Temperature‐driven wear behavior of Si₃N₄‐based ceramic reinforced by in situ formed TiC_0.3N_0.7 particles

High thermal conductivity silicon nitride ceramics prepared by pressureless sintering with ternary sintering additives

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Effects of cobalt on structure and properties of TiC0.3N0.7-TiB2 matrix composite ceramics prepared by self-reactive spray forming method

Cited by 7 publications

References 14 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

Temperature‐driven wear behavior of Si3N4‐based ceramic reinforced by in situ formed TiC0.3N0.7 particles

High thermal conductivity silicon nitride ceramics prepared by pressureless sintering with ternary sintering additives

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Temperature‐driven wear behavior of Si₃N₄‐based ceramic reinforced by in situ formed TiC_0.3N_0.7 particles