Effects of Nitridation Time and Precursor Particle Size on Yield of β-SiAlON Synthesized from Calcined Kaolinite

Arik, Halil; Bağcı, Cengiz

doi:10.1007/s11106-019-00015-w

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…10 X-SiAlON possesses good oxidation resistance because it has the highest oxygen content among the other compounds and Si 3 N 4 in the quaternary system. 11 Various aluminosilicates such as kaolin, halloysite, illite, bentonite, montmorillonite, 2,[12][13][14][15] fly ash, 16 or glass 17 have been used to synthesize SiAlONs by carbothermal reduction and subsequent nitridation. [18][19][20] In these studies, some of α-, β-, O-, and X-SiAlON ceramics having different chemical compositions, or a mixture of these SiAlON phases were obtained, depending on the compositions of the starting powder mixture.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of SiAlON‐type compounds by carbothermal reduction and nitridation of nanoparticulate geopolymers

et al. 2023

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Various types of SiAlON compounds were synthesized by heating of carbon‐mixed, geopolymer compositions of M2O•Al2O3•4.5SiO2•12H2O + 9C. A fixed molar ratio of carbon to silica of 2 and charge‐balancing cations Na+, K+, or Cs+ were used to prepare the geopolymer‐carbon precursor resins. After curing, the precursors were ground to powders and then fired at 1400 to 1600°C for 2 h under flowing nitrogen. In contrast to previous studies, powdered forms of the precursors and moderate carbon ratios were used in these syntheses. X‐ray diffraction results indicated that phase‐pure β‐ or O‐SiAlON powders were synthesized, in the case of potassium at 1400 or 1500°C (for β‐SiAlON) and sodium cations at 1400°C (for O‐SiAlON), respectively. In the cases of cesium, high purity β‐SiAlON with some corundum and pollucite were synthesized. Furthermore, depending on the cation type and temperatures, tailored compositions of SiAlON or other compounds (mainly Al2O3) were formed by other reactions between precursors in this systematic study.

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Section: Introductionmentioning

confidence: 99%

Synthesis of SiAlON‐type compounds by carbothermal reduction and nitridation of nanoparticulate geopolymers

et al. 2023

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“…Based on the previous researches, carbon‐thermal reduction method is widely used to fabricate Sialon nanostructure for the low cost and ease of manufacturing. Kaolinite, 36 natural clay containing kaolin, and quartz 37 were chosen as low cost ingredients to synthesize β‐Sialon. And in most of relative reports, SiO 2 , Si 3 N 4 , and Al 2 O 3 38‐43 are commonly used as starting materials to produce composites containing Sialon.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and microstructure evolution of β‐Sialon fibers/barium aluminosilicate (BAS) glass‐ceramic matrix composite with enhanced mechanical properties

et al. 2021

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Barium aluminosilicate (BAS, BaO-Al 2 O 3 -2SiO 2 ) glassceramic material shows excellent thermal stability, high oxidation resistance, high melting point (1760°C), and low dielectric constant. These features have resulted in the widespread use of BAS composites in the area of integrated circuit substrate, electronic package, LCD monitor, refractory composites, and so on. [1][2][3][4][5][6][7][8][9][10][11][12] Whereas the intrinsic low toughness problem has restricted the wider range of applications. Carbon fiber, [13][14][15][16] SiC fiber, [17][18][19] and CNTs [20][21][22][23] are commonly introduced in the glass-ceramic matrix to improve mechanical properties. However, these materials were found to show different drawbacks in the relative researches, such as the poor oxidation resistance of carbon fiber 24 ; the high price of SiC fiber; and the complex synthesis steps of CNTs. 25 Sialon, as a solid solution of Si 3 N 4 , consists of α-Sialon, β-Sialon, O-Sialon, and X-Sialon phases. Among them, β-Sialon is known for the high fracture toughness and excellent thermal stability, making it superior over other reinforcement materials when dealing with high temperature. 4 So the combination of Sialon and BAS not only solves the fatal brittleness problem of BAS, but also improves the thermal performance of BAS matrix.It has been demonstrated that one-dimensional materials, such as nanowires, whiskers, and fibers, exhibit unique structures and properties, which are exploited to build up nano-scale reinforcements. [26][27][28][29] Significant efforts have been devoted for in situ synthesizing one-dimensional Sialon materials inside ceramic matrix materials. [30][31][32] In these researches,

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An energy-saving and cleaner method for recycling coal gangue and aluminium chips: Preparing in-situ nitride whiskers reinforced ceramics for thermal storage

Lao

et al. 2023

Journal of Cleaner Production

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Effects of Nitridation Time and Precursor Particle Size on Yield of β-SiAlON Synthesized from Calcined Kaolinite

Cited by 4 publications

References 25 publications

Synthesis of SiAlON‐type compounds by carbothermal reduction and nitridation of nanoparticulate geopolymers

Synthesis of SiAlON‐type compounds by carbothermal reduction and nitridation of nanoparticulate geopolymers

Synthesis and microstructure evolution of β‐Sialon fibers/barium aluminosilicate (BAS) glass‐ceramic matrix composite with enhanced mechanical properties

An energy-saving and cleaner method for recycling coal gangue and aluminium chips: Preparing in-situ nitride whiskers reinforced ceramics for thermal storage

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