Fabrication of mullite-bonded porous silicon carbide ceramics by in situ reaction bonding

Ding, Shuqiang; Zhu, Shujia; Zeng, Yu‐Ping; Jiang, Dongliang

doi:10.1016/j.jeurceramsoc.2006.06.003

Cited by 136 publications

(71 citation statements)

References 26 publications

(24 reference statements)

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“…15) A flexural strength of 15 MPa at 48% porosity was also reported using graphite pore former and Y 2 O 3 sintering additives. 16) The flexural strengths of mullite-bonded SiC ceramics with no additives in the literature were 9.8 MPa at 50% porosity, 31) 24 MPa at 43% porosity, 13) and 39 MPa at 36% porosity. 32),33) Typical flexural strength of porous mullite-bonded SiC ceramics using Al(OH) 3 in the present study is 14 MPa at 47% porosity.…”

Section: Resultsmentioning

confidence: 91%

“…15), 20) The porous mullite-bonded SiC ceramics produced from SiC, alumina and graphite powders exhibited a maximum strength of 28 MPa when 20¯m-starting SiC powder and Y 2 O 3 sintering additives were used. 16) The high alumina content (37 wt %) yielded a maximum strength of 39 MPa for a 37% porous mullite-bonded SiC ceramics, 18) while sub-micron SiC powders yielded a further increase in strength to ³90 MPa at 25% porosity. 19) It is recently reported that the strength and porosity can be tailored with proper selection of aluminum source that contribute to the in situ mullitization process.…”

Section: Introductionmentioning

confidence: 99%

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Effect of aluminum hydroxide content on porosity and strength of porous mullite-bonded silicon carbide ceramics

Kumar

Eom

Kim

et al. 2011

J. Ceram. Soc. Japan

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Porous mullite-bonded silicon carbide (SiC) ceramics were prepared from SiC and aluminum hydroxide [Al(OH) 3 ] powders. The Al(OH) 3 content was varied from 14.5 to 47.3 wt %, and porous SiC ceramics were fabricated via reaction sintering at 1450 1550°C for 2 h. The microstructure showed large SiC grains embedded in a matrix of small and loosely packed mullite/alumina particles. It was demonstrated that the porosity decreased and flexural strength increased with increase in Al(OH) 3 content. The porosity varied from 46 to 54%, and flexural strength varied from 3 to 14 MPa with the variation in Al(OH) 3 content and sintering temperature. Typically, porous mullite-bonded SiC ceramics of 14 MPa strength and 47% porosity were obtained when SiC and 47.3 wt % Al(OH) 3 powders were sintered at 1500°C.

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Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Effect of aluminum hydroxide content on porosity and strength of porous mullite-bonded silicon carbide ceramics

Kumar

Eom

Kim

et al. 2011

J. Ceram. Soc. Japan

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“…The average pore size of the sintered ceramics was found to be 7. (10). The flexural strength of MBSC with no additives in the literature were 9.8 MPa at 50 % porosity, (12) 24 MPa at 43 % porosity, 39 MPa at 36 % porosity and 45.49 MPa at 29.54 % porosity (11,13).…”

Section: Acknowledgementmentioning

confidence: 87%

“…They include silica, mullite, cordierite, silicon nitride, etc. (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). Among these bond phases mullite possesses a high melting point, low oxygen diffusion coefficient and matching thermal expansion coefficient with SiC.…”

Section: Introductionmentioning

confidence: 99%

“…Several methods of synthesis of mullite bonded porous SiC ceramics were reported. Majority of these investigations have dealt with an in-situ reaction bonding process (10)(11)(12)(13)(14)(15)(16). The effect of addition of Y 2 O 3 , alkaline earth metal oxides with the starting materials on the properties of the reaction bonded porous SiC ceramics are also discussed by several authors (15,16).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Y<sub>2</sub>O<sub>3</sub> addition on the properties of mullite bonded porous SiC ceramics prepared by an infiltration technique

Kayal¹,

Dey²,

Chakrabarti³

2013

Bol. Soc. Esp. Ceram. Vidr.

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Mullite bonded porous SiC ceramics were synthesized by infiltrating a powder compact of SiC and Y2O3 with a liquid precursor of mullite which on subsequent heat treatment at 1300-1500 ºC produced mullite bonded porous SiC ceramics. The effect of Y2O3 content and sintering temperature on phase composition, microstructure, oxidation degree of SiC, flexural strength, porosity and pore size distribution were studied. Due to enhance oxidation and well developed neck formation by the addition of Y₂O₃ a high strength 49 MPa was achieved for the porous mullite bonded SiC ceramics with porosity 28 vol %.

Se han sintetizado materiales porosos de SiC-Mullita mediante la infiltración de polvo prensado de SiC y Y₂O₃ con un precursor líquido de mullita, el cual con un tratamiento térmico posterior a 1300-1500 °C da lugar a los materiales porosos de SiC-Mullita. Se estudió el efecto del contenido de Y₂O₃ y la temperatura de sinterización en la constitución mineralógica, en la microestructura, en el grado de oxidación del SiC, la resistencia a la flexión, la porosidad total y su distribución de tamaño. Debido a la oxidación y a la mejora en la formación de los cuellos por la adición de Y₂O₃, se alcanzan altos valores de resistencia, 49 MPa, para estos materiales porosos de SiC-Mullita con porosidad 28 % en volumen

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Microstructure and Properties of Cordierite‐Bonded Porous SiC Ceramics Prepared by In Situ Reaction Bonding

Liu

Zeng

Jiang

2010

Ceramic Transactions Series

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Fabrication of mullite-bonded porous silicon carbide ceramics by in situ reaction bonding

Cited by 136 publications

References 26 publications

Effect of aluminum hydroxide content on porosity and strength of porous mullite-bonded silicon carbide ceramics

Effect of aluminum hydroxide content on porosity and strength of porous mullite-bonded silicon carbide ceramics

Effect of Y<sub>2</sub>O<sub>3</sub> addition on the properties of mullite bonded porous SiC ceramics prepared by an infiltration technique

Microstructure and Properties of Cordierite‐Bonded Porous SiC Ceramics Prepared by In Situ Reaction Bonding

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