Sintering of Al2O3–SiC composite from sol–gel method with MgO, TiO2 and Y2O3 addition

Mohammadrahimi, Raheleh; Rezaie, Hamid Reza; Nemati, Ali

doi:10.1016/j.ceramint.2011.01.035

Cited by 16 publications

(2 citation statements)

References 34 publications

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“…Therefore, the sample density is increased during sintering. 16,17,[28][29][30] 3.2. Phase analysis, microstructure, and variations in the grain sizes of samples Figure 5 shows the XRD pattern of Al 2 O 3 -nanoSiC sample sintered at 1750°C with 15 vol.% nanoSiC, in which the existence of -Al 2 O 3 and SiC without any reaction occurring between them at the experimental temperature and pressure has been illustrated.…”

Section: Relative Densitymentioning

confidence: 99%

Effect of Sintering Temperature on the Grain Size and Mechanical Properties of Al2O3-SiC Nanocomposites

Moradkhani¹,

Baharvandi²,

Naserifar³

2019

J. Korean Ceram. Soc

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In this research, some mechanical properties of Al 2 O 3-based composites containing nanoSiC and nanoMgO additives, including elasticity modulus, hardness, and fracture toughness, have been evaluated. Micron-sized Al 2 O 3 powders containing 0.08 wt.% nanoMgO particles have been mixed with different volume fractions of nanoSiC particles (2.5 to 15 vol.%). Untreated samples have been sintered by using hot-press technique at temperatures of 1600 to 1750°C. The results show significant increases in the mechanical characteristics with increases in the sintering temperature and amount of nanoSiC particles, with the result that the elasticity modulus, hardness, and fracture toughness were obtained as 426 GPa, 21 GPa, and 4.5 MPa.m 1/2 , respectively.

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Section: Relative Densitymentioning

confidence: 99%

Effect of Sintering Temperature on the Grain Size and Mechanical Properties of Al2O3-SiC Nanocomposites

Moradkhani¹,

Baharvandi²,

Naserifar³

2019

J. Korean Ceram. Soc

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“…[13][14][15] Moreover, there are many reports about Y 2 O 3 as a sintering aid to accelerate the sintering process of ceramics. [16][17][18] If Y 2 O 3 is added into Al 2 O 3 /ZrO 2 porous composite ceramics, it will not only stabilise tZrO 2 but also promote the sintering process. In addition, the effect of Y 2 O 3 content on the lattice parameters of Al 2 O 3 /ZrO 2 porous composite ceramics has yet to be published and thus remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Effects of Y₂O₃ content on lattice parameters, sintering behaviour and mechanical properties of Al₂O₃/15 wt-%ZrO₂ porous composite ceramics

Xiangchong

2014

Materials Research Innovations

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The effects of different amounts of Y 2 O 3 addition (0, 0?25, 0?50, 0?75 and 1?00 wt-%) on the lattice parameters, sintering behaviour and mechanical properties of Al 2 O 3 /15 wt-%ZrO 2 porous composite ceramics have been investigated. It is found that Y 2 O 3 and Al 2 O 3 tend to form Al 5 Y 3 O 12 rather than a solid solution of (Al 1-X Y X ) 2 O 3 , while Y 3z can displace Zr 4z of ZrO 2 to form a solid solution and increase the lattice constants of tetragonal zirconia (t-ZrO 2 ). The additions of Y 2 O 3 into Al 2 O 3 /15 wt-%ZrO 2 porous composite ceramics not only stabilise t-ZrO 2 but also act as a sintering aid for promoting the sintering process. In addition, Y 2 O 3 additions are beneficial to improving the modulus of rupture and cold crushing strength of Al 2 O 3 /15 wt-%ZrO 2 porous composite ceramics; their maximum values are obtained at 0?75 wt-%Y 2 O 3 , which are 56 and 118 MPa respectively.

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Structural investigations on inorganic Al2O3–ZnO composites

2021

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Sintering of Al2O3–SiC composite from sol–gel method with MgO, TiO2 and Y2O3 addition

Cited by 16 publications

References 34 publications

Effect of Sintering Temperature on the Grain Size and Mechanical Properties of Al2O3-SiC Nanocomposites

Effect of Sintering Temperature on the Grain Size and Mechanical Properties of Al2O3-SiC Nanocomposites

Effects of Y₂O₃ content on lattice parameters, sintering behaviour and mechanical properties of Al₂O₃/15 wt-%ZrO₂ porous composite ceramics

Structural investigations on inorganic Al2O3–ZnO composites

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Sintering of Al2O3–SiC composite from sol–gel method with MgO, TiO2 and Y2O3 addition

Cited by 16 publications

References 34 publications

Effect of Sintering Temperature on the Grain Size and Mechanical Properties of Al2O3-SiC Nanocomposites

Effect of Sintering Temperature on the Grain Size and Mechanical Properties of Al2O3-SiC Nanocomposites

Effects of Y2O3 content on lattice parameters, sintering behaviour and mechanical properties of Al2O3/15 wt-%ZrO2 porous composite ceramics

Structural investigations on inorganic Al2O3–ZnO composites

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Effects of Y₂O₃ content on lattice parameters, sintering behaviour and mechanical properties of Al₂O₃/15 wt-%ZrO₂ porous composite ceramics