High temperature sintering of SiC with oxide additives: I. Analysis in the SiC–Al2O3 and SiC–Al2O3–Y2O3 systems

Baud, S.; Thévenot, F.; Pisch, A.; Chatillon, C.

doi:10.1016/s0955-2219(02)00067-5

Cited by 66 publications

(50 citation statements)

References 15 publications

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“…3,5,6 The sintering conditions influence the composition of the gaseous phases formed and consequently the extent of the mass losses. [3][4][5][6]10,11 If not properly controlled, the resultant mass loss can significantly affect the final properties of the materials. Therefore, it is a common practice to use a powder bed to minimise the mass loss by gas forming reactions during the sintering of LPSSiC.…”

Section: Introductionmentioning

confidence: 99%

“…In most cases a mixture of SiC and Al 2 O 3 are used for the powder bed. 6,10,11 In most previous investigations the influence of the SiO 2 on the densification and properties is neglected after the statement that the SiO 2 is the less stable component and will evaporate at low temperatures. They then focus more on the decomposition reactions of Al 2 O 3 and Y 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Densification of liquid phase sintered silicon carbide

Can

Herrmann

McLachlan

et al. 2006

Journal of the European Ceramic Society

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Densification of liquid phase sintered silicon carbide

Can

Herrmann

McLachlan

et al. 2006

Journal of the European Ceramic Society

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“…Thermodynamic evaluation of these reactions was previously performed by Baud et al [27], confirming the formation of gaseous species in the temperature range of 1200-2300 K. Microstructure of T-SiC and C-SiC sintered samples is then shown in Fig. 3.…”

Section: Resultsmentioning

confidence: 52%

Sintering and mechanical properties of β‐SiC powder obtained from waste tires

et al. 2016

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Plasma synthesized SiC powder obtained from quartz and carbonaceous residue of waste tires was successfully sintered at 1925 ℃ by pressureless liquid-phase method using yttria and alumina as sintering aids (T-SiC). Comparison with sintered SiC obtained from commercial powder (C-SiC) put in evidence of similar sintered density (98%T.D.), but much finer microstructure of T-SiC than that of C-SiC. T-SiC also showed higher flexural strength than C-SiC both at room temperature (508 vs. 458 MPa) and at 1500 ℃ (280 vs. 171 MPa). Difference in liquid phase was responsible for the differences in hardness and fracture toughness. The high value of the Young's modulus of T-SiC (427 MPa) confirmed the high degree of sinterability of this powder and that it can be a promising candidate for structural applications with high added value.

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“…These interactions cause weight losses, porosity and the formation of sintering skins or even instabilities of the materials. [22][23][24][25][26][27][28] The understanding of the sintering and microstructure formation in these materials is the preposition of their reproducible production. Computational thermodynamics can support the understanding and modeling of reactions and process described above Ref 22,26.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Evaluation of the Si-C-Al-Y-O System for LPS-SiC Application

Pan

Fabrichnaya

Seifert

et al. 2010

J. Phase Equilib. Diffus.

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A thermodynamic dataset for the Si-C-Al-Y-O system was developed for calculations of heterogeneous phase equilibria and reactions in SiC-base engineering ceramics. The quinary system is of major interest for the understanding of the liquid phase sintering of silicon carbide ceramics using additives like alumina (Al2O3) and yttria (Y2O3). The thermodynamic dataset was developed by the CALPHAD method of thermodynamic optimization. Analytical descriptions for the Gibbs free energy functions of all phases in the Si-C-Al-Y-O system were assessed. The sublattice model using the compound energy formalism was used for the treatment of the solid phases. The liquid phase was described by using the partially ionic liquid model presented as (Al3+, Si4+, Y3+)(P)(O2-, SiO4 (4-), Va, AlO3/2, SiO2, C)(Q), which covers metallic liquid and oxide liquid as a single phase

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High temperature sintering of SiC with oxide additives: I. Analysis in the SiC–Al2O3 and SiC–Al2O3–Y2O3 systems

Cited by 66 publications

References 15 publications

Densification of liquid phase sintered silicon carbide

Densification of liquid phase sintered silicon carbide

Sintering and mechanical properties of β‐SiC powder obtained from waste tires

Thermodynamic Evaluation of the Si-C-Al-Y-O System for LPS-SiC Application

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