Effects of nitridation time and precursor particle size on yield of ?-SiAlON synthesized from calcined kaolinite
[ X ]
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer New York LLC
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Carbothermal reduction and simultaneous nitriding (CTRN) of natural aluminosilicates is a method used to obtain phases of Si–Al–O–N system. SiAlON phases have important applications, such as high technology ceramics, for wear parts, cutting tools or special purpose refractory materials. In this study carbothermal reduction and nitriding reactions of kaolinite obtained from Balikesir-Düvertepe area of Turkey were studied. The mean particle sizes of kaolinite used for CTRN process were 6.4, 4.67, and 2.29 ?m, respectively. The reactions of kaolinite and carbon black mixture carried out at 1400°C for 2, 4, and 8 h. CTRN process was conducted in an atmosphere controlled tube furnace in nitrogen flow of 4 cm 3 /min. All products were examined by XRD and SEM to determine the transformation, morphology and chemical composition. The results showed that the most of SiAlON transformations occurred at 1400°C for 8 h. It was observed that when decreasing the mean particle size of the starting material the transformation of kaolinite to SiAlON was increased. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
Açıklama
Anahtar Kelimeler
Kaolinite, Sialon, Silicon Nitride, Technologic Ceramics
Kaynak
Powder Metallurgy and Metal Ceramics
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
57
Sayı
09.Oct
Künye
Arık, H., Bağcı, C. (2019). Effects of nitridation time and precursor particle size on yield of ?-SiAlON synthesized from calcined kaolinite. Powder Metallurgy and Metal Ceramics, 57(9-10), 557-563.
