Densification of liquid phase sintered silicon carbide

Can, A.; Herrmann, Matthias; McLachlan, D.S.; Sigalas, Iakovos; Adler, J.

doi:10.1016/j.jeurceramsoc.2005.03.253

Cited by 99 publications

(43 citation statements)

References 17 publications

(22 reference statements)

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“…Generally, the conventional solid state sintering requires extremely high temperatures up to 2200°C and long sintering time to achieve full densification. 7,8) It is well known that high temperature and longtime sintering may cause the grain growth phenomenon that will eventually detract the mechanical properties of the final sintered product. With regard to particle size distributions (PSD), earlier researchers have suggested using mono-sized powders of narrow particle size distribution in producing uniform, dense and fine-grained microstructure.…”

Section: Introductionmentioning

confidence: 99%

Effect of Particle Size Distribution on SiC Ceramic Sinterability

et al. 2015

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Silicon Carbide has drawn a significant attention in recent decades for its excellent properties such as high oxidation resistance, high hardness and low density. However, an important drawback for SiC manufacturing is its poor sinter ability due to its highly covalent nature of bonding. This work investigates the effect of dispersion in Particle Size Distribution on the sinter ability of SiC ceramics. In the present work, two types of SiC powders, consisting powders of sizes 0.3 µm and 2.5 µm, were subjected to mechanical milling in order to produce various patterns of particle size distributions. Subsequently, milled powders were sintered by spark plasma sintering. This sintering technology is used in account of its rapid heating and short time sintering. This work also suggests the usage of coefficient of variation, C v as an appropriate parameter to indicate the dispersion level in PSD range investigated.

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Section: Introductionmentioning

confidence: 99%

Effect of Particle Size Distribution on SiC Ceramic Sinterability

et al. 2015

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“…Al, Fe, Ca) present in the initial powder. 24) Amorphous silicate phases, as well as Y 2 O 3 , act as sintering aids, accelerating composite sintering through a mechanism similar to liquidphase sintering. The sample grain size decreased quickly with increasing SiC content, since the SiC particles allow pinning, which suppressed alumina grain growth.…”

Section: Damage and Wear Resistancementioning

confidence: 99%

Damage and wear resistance of Al<sub>2</sub>O<sub>3</sub>–SiC microcomposites with hard and elastic properties

Elyas

Kim

Jang

et al. 2018

J. Ceram. Soc. Japan

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Al 2 O 3 SiC composites with different SiC contents of 010 wt % were fabricated and the effects on damage and wear resistance investigated. The composites were fabricated using spark plasma sintering at 1600°C in a partial vacuum (80 MPa). Hertzian indentation evaluations using a spherical indenter indicated that the hardness of the composite is improved by SiC addition. Wear resistance evaluated using the ball-on-disk method showed enhanced wear resistance for the composites, even when SiC addition was less than 2 wt %. Thus, Al 2 O 3 ceramics exhibited significantly improved damage and wear resistance, even though SiC addition was as small as 2 wt %.

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“…The use of yttria or other rare earth oxides and Al 2 O 3 or AlN as sintering additives, which form together with the SiO 2 existing on the surface of the starting SiC-powder, a liquid phase during the sintering, promotes the densication and microstructural development [5,6]. Liquid phase sintering allows densication of SiC at temperatures close to 1900…”

Section: Introductionmentioning

confidence: 99%

“…However, a major problem associated with sintering of silicon carbide in the presence of oxide additives is the reaction between the silicon carbide and the oxides. The major weight loss in the SiCAl 2 O 3 Y 2 O 3 system during sintering is a result of the formation of gaseous CO, SiO, Al 2 O, and Al [5].…”

Section: Introductionmentioning

confidence: 99%

The Spark Plasma Sintering of Silicon Carbide Ceramics Using Alumina

et al. 2014

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SiC ceramics were fabricated by spark plasma sintering technique with the use of Al2O3 additive. The sintering process was carried out at three dierent temperatures in the range of 17001800• C applying two dierent pressures 40 and 80 MPa under vacuum atmosphere. The eect of additive, dierent temperatures and pressures on densication behaviour, density, Vickers hardness, fracture toughness, and microstructure were examined. The hardness and fracture toughness of the samples were evaluated by the Vickers indentation technique. Microstructure of spark plasma sintered SiC samples were characterized by using scanning electron microscopy technique. The highest value of fracture toughness 5.9 ± 0.2 MPa m 1/2 was achieved with the addition of 5 vol.% Al2O3.

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Densification of liquid phase sintered silicon carbide

Cited by 99 publications

References 17 publications

Effect of Particle Size Distribution on SiC Ceramic Sinterability

Effect of Particle Size Distribution on SiC Ceramic Sinterability

Damage and wear resistance of Al<sub>2</sub>O<sub>3</sub>–SiC microcomposites with hard and elastic properties

The Spark Plasma Sintering of Silicon Carbide Ceramics Using Alumina

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