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An experimental study on synthesis of beta -Sialon composites using fly ash and lignite char-preparation and whiskers formation

beta -Sialon based composites were produced using a vertical reactor by carbothermal reduction reaction under nitrogen using fly ash and lignite chars to examine the effects of mixing, carbon content, reaction temperature and sintering time. The influences of chars as a reductant were further invest... Full description

Journal Title: Journal of the Ceramic Society of Japan 0, 2015, Vol.123(1439), p.542
Main Author: Zhao, Huan
Other Authors: Wang, Pingyang , Yu, Jianglong , Zhang, Jing , Tahmasebi, Arash , Meng, Fanrui
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1882-0743 ; E-ISSN: 1348-6535
Link: http://search.proquest.com/docview/1793251678/?pq-origsite=primo
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title: An experimental study on synthesis of beta -Sialon composites using fly ash and lignite char-preparation and whiskers formation
format: Article
creator:
  • Zhao, Huan
  • Wang, Pingyang
  • Yu, Jianglong
  • Zhang, Jing
  • Tahmasebi, Arash
  • Meng, Fanrui
subjects:
  • Scanning Electron Microscopy
  • Chars
  • Silicon Carbide
  • Fly Ash
  • Sintering (Powder Metallurgy)
  • Lignite
  • Evolution
  • Combustion
  • General (Wc)
  • General and Nonclassified (EC)
ispartof: Journal of the Ceramic Society of Japan, 0, 2015, Vol.123(1439), p.542
description: beta -Sialon based composites were produced using a vertical reactor by carbothermal reduction reaction under nitrogen using fly ash and lignite chars to examine the effects of mixing, carbon content, reaction temperature and sintering time. The influences of chars as a reductant were further investigated in comparison with graphite. The evolution of phase and morphology in samples were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). Mechanical stirring was favored to mix fly ash and chars, while ball-milling shove the chars with porous structure due to collisions of agate balls, preventing N2 penetration to the inner parts of reactants. When excess carbon was increased to 100%, a higher combustion reactivity of low-temperature chars resulted in the production of SiC phase. The evolution of beta -Sialon with increasing reaction temperature showed the samples mixed with chars were more sensitive to reaction temperature than that with graphite....
language: eng
source:
identifier: ISSN: 1882-0743 ; E-ISSN: 1348-6535
fulltext: fulltext
issn:
  • 18820743
  • 1882-0743
  • 13486535
  • 1348-6535
url: Link


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titleAn experimental study on synthesis of beta -Sialon composites using fly ash and lignite char-preparation and whiskers formation
creatorZhao, Huan ; Wang, Pingyang ; Yu, Jianglong ; Zhang, Jing ; Tahmasebi, Arash ; Meng, Fanrui
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ispartofJournal of the Ceramic Society of Japan, 0, 2015, Vol.123(1439), p.542
identifierISSN: 1882-0743 ; E-ISSN: 1348-6535
subjectScanning Electron Microscopy ; Chars ; Silicon Carbide ; Fly Ash ; Sintering (Powder Metallurgy) ; Lignite ; Evolution ; Combustion ; General (Wc) ; General and Nonclassified (EC)
descriptionbeta -Sialon based composites were produced using a vertical reactor by carbothermal reduction reaction under nitrogen using fly ash and lignite chars to examine the effects of mixing, carbon content, reaction temperature and sintering time. The influences of chars as a reductant were further investigated in comparison with graphite. The evolution of phase and morphology in samples were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). Mechanical stirring was favored to mix fly ash and chars, while ball-milling shove the chars with porous structure due to collisions of agate balls, preventing N2 penetration to the inner parts of reactants. When excess carbon was increased to 100%, a higher combustion reactivity of low-temperature chars resulted in the production of SiC phase. The evolution of beta -Sialon with increasing reaction temperature showed the samples mixed with chars were more sensitive to reaction temperature than that with graphite....
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titleAn experimental study on synthesis of beta -Sialon composites using fly ash and lignite char-preparation and whiskers formation
descriptionbeta -Sialon based composites were produced using a vertical reactor by carbothermal reduction reaction under nitrogen using fly ash and lignite chars to examine the effects of mixing, carbon content, reaction temperature and sintering time. The influences of chars as a reductant were further investigated in comparison with graphite. The evolution of phase and morphology in samples were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). Mechanical stirring was favored to mix fly ash and chars, while ball-milling shove the chars with porous structure due to collisions of agate balls, preventing N2 penetration to the inner parts of reactants. When excess carbon was increased to 100%, a higher combustion reactivity of low-temperature chars resulted in the production of SiC phase. The evolution of beta -Sialon with increasing reaction temperature showed the samples mixed with chars were more sensitive to reaction temperature than that with graphite....
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titleAn experimental study on synthesis of beta -Sialon composites using fly ash and lignite char-preparation and whiskers formation
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abstractbeta -Sialon based composites were produced using a vertical reactor by carbothermal reduction reaction under nitrogen using fly ash and lignite chars to examine the effects of mixing, carbon content, reaction temperature and sintering time. The influences of chars as a reductant were further investigated in comparison with graphite. The evolution of phase and morphology in samples were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). Mechanical stirring was favored to mix fly ash and chars, while ball-milling shove the chars with porous structure due to collisions of agate balls, preventing N2 penetration to the inner parts of reactants. When excess carbon was increased to 100%, a higher combustion reactivity of low-temperature chars resulted in the production of SiC phase. The evolution of beta -Sialon with increasing reaction temperature showed the samples mixed with chars were more sensitive to reaction temperature than that with graphite....
urlhttp://search.proquest.com/docview/1793251678/
doi10.2109/jcersj2.123.542