Fabrication and characterisation of AlN-SiC porous composite ceramics by nitridation of Al4SiC4

Xing, Guangchao; Deng, Chengji; Ding, Jun; Zhu, Hui; Yu, Chao

doi:10.1016/j.ceramint.2019.10.234

Cited by 19 publications

(4 citation statements)

References 47 publications

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“…In SiC‐based refractories, the bonding phases were filled between the SiC particles and connected the SiC particles, the stability of bonding phases greatly affected working life. However, the common bonding phases, including SiO 2 , clay, Si 3 N 4 , β‐SiC, Si 2 N 2 O, β‐Sialon, AlN polytype, and Ti 3 SiC 2 , in SiC‐based products could be corroded by hot water vapor 20–36 …”

Section: Introductionmentioning

confidence: 99%

“…However, the common bonding phases, including SiO 2 , clay, Si 3 N 4 , β-SiC, Si 2 N 2 O, β-Sialon, AlN polytype, and Ti 3 SiC 2 , in SiC-based products could be corroded by hot water vapor. [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] Yb 2 Si 2 O 7 not only had good chemical stability but also performed close coefficient of thermal expansion (CTE) with SiC substrate, 37,38…”

Section: Introductionmentioning

confidence: 99%

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Improved water vapor corrosion resistance of SiC bricks via in situ formation of microporous Yb₂Si₂O₇ bonding phase

Zhang,

Chen,

Xue

et al. 2024

Int J Applied Ceramic Tech

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SiC‐based lining refractories used in incinerators faced serious hot water vapor corrosion. The pores in SiC‐based refractories played a crucial role in corrosion resistance because both the penetration of water vapor and the expulsion of corrosion products depended on diffusion channels provided by pores. The in situ microporous Yb2Si2O7 bonding phase formed in the SiC bricks after sintering at 1550°C under air atmosphere, which simultaneously decreased the apparent porosity and pore size. The optimization of pore structures reduced the permeability to gases of SiC bricks by 37.5%, which prevented the penetration of hot water vapor into SiC bricks. The microporous Yb2Si2O7‐bonded SiC bricks presented only .15% permanent linear change and showed good thermal shock resistance after corrosion at 1000°C for 100 h under hot water vapor atmosphere. Some SiC particles in the refractories could be adopted as high‐temperature pore‐forming agents; the gaseous oxidation products of SiC bricks, including SiO(g) and CO(g), contributed to the generation of microporous Yb2Si2O7 (pore size ≤5 μm) and SiC whiskers during sintering, which obviously improved mechanical properties and water vapor corrosion resistance of SiC bricks.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved water vapor corrosion resistance of SiC bricks via in situ formation of microporous Yb₂Si₂O₇ bonding phase

Zhang,

Chen,

Xue

et al. 2024

Int J Applied Ceramic Tech

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“…For simplicity and efficiency, heat-treating singlephase ternary carbide is a promising and attractive method for composites because only one single raw material is required, with the homogeneous chemical composition. 5,[18][19][20][21] Al 4 O 4 C is a promising compound for high-temperature applications and refractory because of their high melting point (1890 • C), low density (2.684 g/cm 3 ), and excellent oxidation resistance. [21][22][23][24][25][26][27] The study on high-temperature behavior of pressed Al 4 O 4 C pellets under a nitrogen atmosphere indicated that a nitride layer generated on the surface and thereby slowed the nitrogen diffusion into the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…For simplicity and efficiency, heat‐treating single‐phase ternary carbide is a promising and attractive method for composites because only one single raw material is required, with the homogeneous chemical composition 5,18–21 . Al 4 O 4 C is a promising compound for high‐temperature applications and refractory because of their high melting point (1890°C), low density (2.684 g/cm 3 ), and excellent oxidation resistance 21–27 .…”

Section: Introductionmentioning

confidence: 99%

A novel strategy for the fabrication of AlN–AlON refractories: Nitrogen gas pressure sintering of Al₄O₄C

Zheng

Xing

et al. 2022

J Am Ceram Soc.

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A novel strategy was exploited for the fabrication of AlN-AlON refractories via nitrogen gas pressure sintering of Al 4 O 4 C. The phase transformation and microstructure evolution during the reaction at 1600-1800 • C were thoroughly investigated. The results indicated that the high N 2 pressure was essential for the effective nitridation. The in situ generated AlN-AlON refractories had a homogeneous local chemical composition, and the (101) plane of AlN and the (222) lattice plane of Al 5 O 6 N were bonded at their grain boundary with no amorphous phase. The as-fabricated AlN-AlON refractories treated at 1700 • C by a 20 atmnitrogen pressure exhibited an optimum bending strength of 111.10 MPa, combining an apparent porosity of 20% with a low bulk density of 1.97 g/cm 3 . The diffusion of the generated oxygen led to an increase in the apparent porosity and decrease in the bulk density at 1800 • C. Furthermore, the fabrication mechanism of AlN-AlON refractories under the nitrogen gas-pressure was discussed.

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Preparation and thermal shock resistance of sialon/SiC composite ceramics used for solar absorber

Wang

Rao

et al. 2020

J Aust Ceram Soc

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Fabrication and characterisation of AlN-SiC porous composite ceramics by nitridation of Al4SiC4

Cited by 19 publications

References 47 publications

Improved water vapor corrosion resistance of SiC bricks via in situ formation of microporous Yb₂Si₂O₇ bonding phase

Improved water vapor corrosion resistance of SiC bricks via in situ formation of microporous Yb₂Si₂O₇ bonding phase

A novel strategy for the fabrication of AlN–AlON refractories: Nitrogen gas pressure sintering of Al₄O₄C

Preparation and thermal shock resistance of sialon/SiC composite ceramics used for solar absorber

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Fabrication and characterisation of AlN-SiC porous composite ceramics by nitridation of Al4SiC4

Cited by 19 publications

References 47 publications

Improved water vapor corrosion resistance of SiC bricks via in situ formation of microporous Yb2Si2O7 bonding phase

Improved water vapor corrosion resistance of SiC bricks via in situ formation of microporous Yb2Si2O7 bonding phase

A novel strategy for the fabrication of AlN–AlON refractories: Nitrogen gas pressure sintering of Al4O4C

Preparation and thermal shock resistance of sialon/SiC composite ceramics used for solar absorber

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Resources

About

Improved water vapor corrosion resistance of SiC bricks via in situ formation of microporous Yb₂Si₂O₇ bonding phase

Improved water vapor corrosion resistance of SiC bricks via in situ formation of microporous Yb₂Si₂O₇ bonding phase

A novel strategy for the fabrication of AlN–AlON refractories: Nitrogen gas pressure sintering of Al₄O₄C