Effect of Boron Nitride Addition on Densification, Microstructure, Mechanical, Thermal, and Dielectric Properties of β-SiAlON Ceramic

Barick, Prasenjit; Saha, Bhaskar

doi:10.1007/s11665-021-05692-6

Cited by 10 publications

(3 citation statements)

References 31 publications

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“…SiAlON is a solid solution that combines the benefits of Si 3 N 4 and Al 2 O 3 [ 1 , 2 ]. It is generally formed by mixing Si 3 N 4 with AlN and Al 2 O 3 , resulting in a material with excellent mechanical strength, low thermal expansion coefficient, exceptional wear resistance, and chemical corrosion resistance [ 3 , 4 , 5 ]. It is widely used in industries such as metallurgy, electronics, chemical, and aerospace as a high-temperature structural ceramic [ 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

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

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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.

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Section: Introductionmentioning

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

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show abstract

Section: Introductionmentioning

confidence: 99%

“…Sialon is an excellent oxy-nitride ceramic due to its unique combination of high Youngs modulus (270-275 GPa), moderate hardness (15)(16)(17) and high fracture toughness (6)(7)(8) [1]. Most related work focuses on the synthesis and optimization of experimental conditions for the synthesis of various Sialon materials [1][2][3][4]. Researchers have used many additives to achieve desirable physical, thermal, mechanical and wear-resistant characteristics of Sialon-based materials [2,[5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Addition of Sialon and Aluminum Nitride Fillers on the Photocuring Process of Polymer Coatings

et al. 2022

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This article presents the results of a study on polymer coatings containing poly ethoxylated bisphenol A diacrylate (Bis-AEA10) with aluminum silicon nitride oxide (Sialon) and aluminum nitride (AlN). The polymer coatings were obtained by the photopolymerization technique. Investigations were carried out to determine the effect of the AlN and Sialon content on the UV-curing kinetics, as well as on the mechanical (hardness), thermal (Tg, thermal stability), physicochemical (water contact angle), and structural properties of the polymer coatings. Polymerization rates were characterized as functions of double-bond conversion using the photo-Differential Scanning Calorymetry technique (photo-DSC). The results obtained showed that a small addition of sialon filler (3–5 wt.%) to Bis-AEA10 increases the photopolymerization rate of the varnish, while the addition of more Sialon decreases the rate of photopolymerization. However, for the systems containing AlN filler, the maximum polymerization rate was observed for samples containing 10 wt.% filler. In the case of a varnish composition containing AlN, the maximum polymerization rate is characterized by the system containing 10 wt.% of AlN. This shows that the AlN filler has a good influence on the polymerization process. In either case, the final double bond conversion was high (80%–95%). Mechanical tests have shown that introducing the filler into the polymer matrix increases its hardness. The content of Sialon and AlN in the coatings causes an increase (up to 4–5 wt.%) and a decrease (>4–5 wt.%) in the glass transition temperature. The effect of the addition of fillers on the physicochemical properties of the coating surface has also been investigated and characterized by the water contact angle method. The addition of 20 wt.% Sialon and AlN increased the contact angle of the samples by approximately 40% and 31%, respectively, resulting in coatings with hydrophobic surface properties.

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Microstructural evolution and properties of cemented carbides alloyed with hexagonal boron nitride (h-BN) using selective laser melting

Agyapong

Duntu

Czekanski

et al. 2022

Int J Adv Manuf Technol

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Effect of Boron Nitride Addition on Densification, Microstructure, Mechanical, Thermal, and Dielectric Properties of β-SiAlON Ceramic

Cited by 10 publications

References 31 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

Influence of the Addition of Sialon and Aluminum Nitride Fillers on the Photocuring Process of Polymer Coatings

Microstructural evolution and properties of cemented carbides alloyed with hexagonal boron nitride (h-BN) using selective laser melting

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