Optimal design and preparation of beta-SiAlON multiphase materials from natural clay

Xu, Li; Lian, Fang; Zhang, Han; Bi, Yingpu; Cheng, Ke; Qian, Yangbao

doi:10.1016/j.matdes.2004.12.017

Cited by 31 publications

(26 citation statements)

References 9 publications

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“…The reaction of carbon involved tended to produce gas product and thus caused β-SiAlON ceramics synthesized to possess lower density and MOR. In addition, the mechanical property of SiAlON ceramics is not as good as that reported in the literature [21][22][23][24]. This was probably caused by the processing method [23,24].…”

Section: Mechanical Property Of Sialon Ceramicsmentioning

confidence: 73%

“…In recent years, some work has been done on preparing SiAlON from natural aluminosilicate minerals, such as kaolinite, clay, diatomite, andalusite, zeolite, fly ash, and coal gangue, etc. which may be of cost effectiveness [11][12][13][14][15][16][17]. However, due to the complicate compositions of natural aluminosilicate minerals, the experimental condition to synthesis SiAlON is difficult to control [1,[17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…al. [21] optimized the experimental parameters for β-SiAlON powder and β-SiAlON bonded corundum from natural clay using optimal analysis by orthogonal method. Yamakawa et al [22] proposed a technique of gas reduction-nitridation (GRN) to produce high-purity β-SiAlON powder using zeolite as raw material.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, phase transformation and mechanical property of SiAlON ceramics from coal gangue

Hou¹,

Yue²,

Guo³

et al. 2014

J Min Metall A

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Section: Mechanical Property Of Sialon Ceramicsmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

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Synthesis, phase transformation and mechanical property of SiAlON ceramics from coal gangue

Hou¹,

Yue²,

Guo³

et al. 2014

J Min Metall A

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“…The possible intermediates are mullite, SiC, or SiO gas, and the corresponding reactions can be expressed as follows [25],…”

Section: Mechanism Of Formation Of Sialon Compositesmentioning

confidence: 99%

Facile and Economical Preparation of SiAlON-Based Composites Using Coal Gangue: From Fundamental to Industrial Application

Yue

Zhang

et al. 2015

Energies

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Abstract:The present study aims to synthesize SiAlON-based composites utilizing coal gangue. Different types of SiAlON-based composites were synthesized using coal gangue by carbothermal reduction nitridation method through control of different reaction atmospheres. The experimental results indicate that the oxygen partial pressure was an essential factor in the manufacture of SiAlON-based composites and under proper control of the atmospheres, SiAlON-based composites with different crystal structures could be synthesized. The optimum conditions of synthesis of different SiAlON-based composites were respectively determined. Based on the laboratory results, a prototype plant was proposed and constructed, and β-SiAlON composite was successfully produced using coal gangue. The synthesized β-SiAlON composite was applied in preparation of iron ladle brick instead of SiC, which showed that the compression strength, refractoriness under load and high temperature bending strength were increased from 44.5 ± 6.7 MPa, 1618 ± 21 °C and 5.4 ± 1.2 MPa to 64.1 ± 2.5 MPa, 1700 ± 28 °C and 7.1 ± 1.6 MPa, respectively. Compared with the traditional synthesis method, the present technique is expected to save energy both in raw materials and technical process. OPEN ACCESSEnergies 2015, 8 7429

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“…Ancak hammaddenin barındırdığı safsızlıklar ve mikro yapıların varlığı istenmeyen reaksiyonların dolayısıyla yan ürünlerin oluşmasına neden olmaktadır. Bu yöntemin düşük hammadde maliyeti, geniş üretim olanağı ve tane boyutu kontrolü gibi avantajlarının yanında homojenliğin sağlanmasındaki zorluklar, yüksek işlem sıcaklığı ve donanım maliyeti gibi dezavantajları vardır [3,[12][13][14].…”

Section: Introductionunclassified

Sol-Jel ve Karbotermal İndirgenme-Nitrürleme Kombine Tekniği ile SiAlON Sentezi

Düzenli¹,

Seferinoğlu²

2018

SDÜ Fen Bil Enst Der

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Anahtar KelimelerSialon, Sol-jel, Karbotermal indirgenme-nitrürleme Özet: Bu çalışmada sol-jel yöntemi ile birleştirilen karbotermal indirgenmenitrürleme tekniği ile düşük sıcaklıklarda β-sialon seramiği (Si6-zAlzOzN8-z) üretimi incelenmiştir. Çalışmanın ilk aşamasında istenilen özellikte jelin elde edildiği optimum reaksiyon koşulları farklı reaktif başlangıç oranlarının denenmesiyle belirlenmiştir. Daha sonra uygulanan işlem sıcaklığı gibi reaksiyon parametrelerinin ürün yapısına ve özelliklerine etkisi incelenmiştir. Reaktif başlangıç mol oranları alüminyum iso-propoksit (AlP)/ tetra etilen orto silikat (TEOS): 0.2, hidroklorik asit (HCl)/TEOS: 0.2 ve H2O/TEOS: 6.0 olan reaksiyon koşullarında istenilen özelliklere sahip jel yapısının elde edilebileceği görülmüştür. Ayrıca elde edilen ürün fazları üzerine sinterleme yardımcı maddelerinin etkisini belirlemek amacıyla farklı mol oranında metal nitrat (Ca(NO3)2 ve Mg(NO3)2) tuzları sentez basamağında yapıya eklenmiştir. Eklenen magnezyum nitrat, Mg(NO3)2, tuzu beklendiği gibi azot içeren türlerin artmasını sağlamıştır. Synthesis of SiALON by Combined Sol-Gel and Carbothermal Reduction-Nitridation Techniques KeywordsSialon, Sol-gel, Carbothermal reduction-nitridation Abstract: In this study, the production of β-SiAlON (Si6-zAlzOzN8-z) ceramic at low reaction temperature by carbothermal reduction-nitridation (CRN) method combined with sol-gel technique was investigated. The optimum reaction conditions to obtain the desired gel structure were first determined by testing different starting reactive ratios. Then the effect of reaction parameters such as heat treatment temperature on the product structure and properties was investigated. The gel with desired properties was found to be synthesized at the starting ratio is 0.2 mole/mole for AIP/TEOS, 0.2 mole/mole for HCl/TEOS and 6.0 mole/mole for H2O/TEOS. The effect of the sintering aid materials on the product properties was also investigate by adding metal nitrate salts (Ca(NO3)2 and Mg(NO3)2) during synthesis. As expected, an addition of magnesium nitrate salts caused an increase in the nitrogen containing species.

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Optimal design and preparation of beta-SiAlON multiphase materials from natural clay

Cited by 31 publications

References 9 publications

Synthesis, phase transformation and mechanical property of SiAlON ceramics from coal gangue

Synthesis, phase transformation and mechanical property of SiAlON ceramics from coal gangue

Facile and Economical Preparation of SiAlON-Based Composites Using Coal Gangue: From Fundamental to Industrial Application

Sol-Jel ve Karbotermal İndirgenme-Nitrürleme Kombine Tekniği ile SiAlON Sentezi

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