Improved thermal shock and oxidation resistance of β-SiAlON incorporated with h-BN

Zhao, Lianfeng; Cao, Weidi; Li, Yanjun; Jin, Endong; Cai, Yanzhi; Ding, Donghai; Xiao, Guoqing

doi:10.1016/j.jallcom.2023.169686

Cited by 8 publications

(6 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There oxidation of SiAlON was greatly inhibited. Zhao et al also effectively improved dation resistance of the SiAlON ceramics by adding h-BN to the raw material to borosilicate glass phase on the surface of the SiAlON ceramics [39]. Figure 10 shows the results of bulk density, apparent porosity, and cold com Figure 9 shows the SEM images of interfaces between coating layers and Al 2 O 3 -bonded SiAlON porous ceramics.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the oxidation of SiAlON was greatly inhibited. Zhao et al also effectively improved the oxidation resistance of the SiAlON ceramics by adding h-BN to the raw material to form a borosilicate glass phase on the surface of the SiAlON ceramics [39]. Figure 9 shows the SEM images of interfaces between coating layers and Al2O3bonded SiAlON porous ceramics.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Preparation of Self-Coating Al2O3 Bonded SiAlON Porous Ceramics Using Aluminum Dross and Silicon Solid Waste under Ambient Air Atmosphere

Liu,

Wang,

Zhao

et al. 2023

Materials

View full text Add to dashboard Cite

Al2O3-bonded SiAlON ceramic with self-coating was prepared using aluminum dross and silicon solid waste as starting materials under ambient air conditions. The changes in phase, microstructure, and physical properties of the ceramic with temperature were analyzed and the formation mechanism of the SiAlON phase was elucidated. The results showed that higher temperature was more suitable for the preparation of SiAlON ceramics. As the temperature increased from 1400 to 1600 °C, the main phases in the ceramic transformed from mullite, Al2O3, and SiAlON to Al2O3 and SiAlON. An Al2O3-rich layer spontaneously coated the surface of the porous ceramic as Al melted and oxidized at high temperature. The thickness of this layer decreased as the temperature increased. The presence of Al2O3-rich coating layer impeded air flow, allowing nitriding of Si and Al, and the formation of the SiAlON phase in ambient air conditions. This study not only presents a strategy to successfully recycle aluminum dross and silicon solid waste but also offers a straightforward approach to preparing SiAlON material in air atmosphere.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Preparation of Self-Coating Al2O3 Bonded SiAlON Porous Ceramics Using Aluminum Dross and Silicon Solid Waste under Ambient Air Atmosphere

Liu,

Wang,

Zhao

et al. 2023

Materials

View full text Add to dashboard Cite

show abstract

“…18,19 Many studies have shown that the addition of h-BN can effectively improve the thermal shock and oxidation resistance of the ceramics and refractories. [20][21][22][23] Ji et al 20 prepared h-BN incorporated Al 2 O 3 -C refractories using alumina, carbon black, and h-BN as raw materials. The incorporation of h-BN not only improves the mechanical properties of refractories at room and high temperatures, but also results in better resistance to fracture and oxidation.…”

Section: Introductionmentioning

confidence: 99%

“…The incorporation of h-BN not only improves the mechanical properties of refractories at room and high temperatures, but also results in better resistance to fracture and oxidation. Zhao et al 21 prepared β-SiAlON ceramics incorporated with h-BN by gel casting combining with the reaction bonding method using silicon, alumina, and h-BN as raw materials. When the addition of h-BN ranges in 0-20 wt.%, the flexural strength of the ceramics was decreased, however, the thermal shock and oxidation resistance of β-SiAlON ceramics were enhanced significantly.…”

Section: Introductionmentioning

confidence: 99%

“…Due to its good toughness, low thermal expansion coefficient, excellent chemical stability, machinability, and thermal shock resistance, it has a wide range of applications in ceramics and refractories 18,19 . Many studies have shown that the addition of h‐BN can effectively improve the thermal shock and oxidation resistance of the ceramics and refractories 20–23 . Ji et al 20 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of h‐BN on the thermal shock and oxidation resistance of SiO₂‐bonded SiC refractories

Zhou,

Li,

Duan

et al. 2024

Int J Applied Ceramic Tech

Self Cite

View full text Add to dashboard Cite

In order to improve the thermal shock and oxidation resistance of the SiO2‐bonded SiC refractories, SiO2‐bonded SiC refractories incorporating h‐BN were prepared. The effects of h‐BN on mechanical properties, thermal shock, and oxidation resistance of the SiO2‐bonded SiC refractories were investigated. The flexural strength of the SiO2‐bonded SiC refractories was significantly increased with the addition of the h‐BN. Sample with 5 wt.% h‐BN addition exhibited highest flexural strength of 65.8 MPa which is much higher than that (30.8 MPa) of the samples without h‐BN addition. Because of the self‐healing caused by the oxidation, inhibited crystallization of the SiO2, and the toughing mechanism introduce by the plate‐like h‐BN, the thermal shock resistance of the SiO2‐bonded SiC refractories were significantly enhanced by the addition of h‐BN. Moreover, B2O3 produced from oxidation of the h‐BN combing SiO2 formed borosilicate glass inhibiting crystallization of the SiO2, thereby forming a more stable protective layer, consequently, the oxidation resistance of the SiO2‐bonded SiC refractories was enhanced. The enhanced thermal shock and oxidation resistance from addition of the h‐BN have important implications for its high‐temperature applications.

show abstract

Preparation of β-SiAlON/SiC composite ceramic foam filters and their oxidation resistance

Liu,

Xu,

Yue

et al. 2024

Ceramics International

View full text Add to dashboard Cite

Improved thermal shock and oxidation resistance of β-SiAlON incorporated with h-BN

Cited by 8 publications

References 49 publications

Preparation of Self-Coating Al2O3 Bonded SiAlON Porous Ceramics Using Aluminum Dross and Silicon Solid Waste under Ambient Air Atmosphere

Preparation of Self-Coating Al2O3 Bonded SiAlON Porous Ceramics Using Aluminum Dross and Silicon Solid Waste under Ambient Air Atmosphere

Effects of h‐BN on the thermal shock and oxidation resistance of SiO₂‐bonded SiC refractories

Preparation of β-SiAlON/SiC composite ceramic foam filters and their oxidation resistance

Contact Info

Product

Resources

About

Improved thermal shock and oxidation resistance of β-SiAlON incorporated with h-BN

Cited by 8 publications

References 49 publications

Preparation of Self-Coating Al2O3 Bonded SiAlON Porous Ceramics Using Aluminum Dross and Silicon Solid Waste under Ambient Air Atmosphere

Preparation of Self-Coating Al2O3 Bonded SiAlON Porous Ceramics Using Aluminum Dross and Silicon Solid Waste under Ambient Air Atmosphere

Effects of h‐BN on the thermal shock and oxidation resistance of SiO2‐bonded SiC refractories

Preparation of β-SiAlON/SiC composite ceramic foam filters and their oxidation resistance

Contact Info

Product

Resources

About

Effects of h‐BN on the thermal shock and oxidation resistance of SiO₂‐bonded SiC refractories