Influence of thermal conditions on the combustion synthesis of Si2N2O phase

Pradeilles, Nicolas; Record, Marie‐Christine; Marin‐Ayral, R.M.; Linde, A. V.; Studenikin, I. A.; Грачев, В. В.

doi:10.1016/j.materresbull.2007.02.032

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…Crystalline Si 2 N 2 O can be produced through the following routes: (i) high-temperature solid state reaction of Si 3 N 4 with SiO 2 [5]; (ii) nitridation of a mixture of Si and SiO 2 [6]; (iii) carbothermal reduction nitridation by reacting mixtures of carbon and SiO 2 under flowing nitrogen [7,8]; and, (iv) self-propagating high-temperature synthesis [9,10]. Similar to Si 3 N 4 , Si 2 N 2 O decomposes close to the sintering temperature, and generally hot-pressing is required for fabricating fully dense Si 2 N 2 O ceramics [2,11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Novel Polyethoxysilsesquiazane and Thermal Conversion into Ternary Silicon Oxynitride Ceramics with Enhanced Thermal Stability

et al. 2017

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A novel polyethoxysilsesquiazane ([EtOSi(NH)1.5]n, EtOSZ) was synthesized by ammonolysis at −78 °C of ethoxytrichlorosilane (EtOSiCl3), which was isolated by distillation as a reaction product of SiCl4 and EtOH. Attenuated total reflection-infra red (ATR-IR), 13C-, and 29Si-nuclear magnetic resonance (NMR) spectroscopic analyses of the ammonolysis product resulted in the detection of Si–NH–Si linkage and EtO group. The simultaneous thermogravimetric and mass spectrometry analyses of the EtOSZ under helium revealed cleavage of oxygen-carbon bond of the EtO group to evolve ethylene as a main gaseous species formed in-situ, which lead to the formation at 800 °C of quaternary amorphous Si–C–N with an extremely low carbon content (1.1 wt %) when compared to the theoretical EtOSZ (25.1 wt %). Subsequent heat treatment up to 1400 °C in N2 lead to the formation of X-ray amorphous ternary Si–O–N. Further heating to 1600 °C in N2 promoted crystallization and phase partitioning to afford Si2N2O nanocrystallites identified by the XRD and TEM analyses. The thermal stability up to 1400 °C of the amorphous state achieved for the ternary Si-O-N was further studied by chemical composition analysis, as well as X-ray photoelectron spectroscopy (XPS) and 29Si-NMR spectroscopic analyses, and the results were discussed aiming to develop a novel polymeric precursor for ternary amorphous Si–O–N ceramics with an enhanced thermal stability.

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Section: Introductionmentioning

confidence: 99%

Synthesis of a Novel Polyethoxysilsesquiazane and Thermal Conversion into Ternary Silicon Oxynitride Ceramics with Enhanced Thermal Stability

et al. 2017

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“…In previous studies [3,6,8] only using electric field or activative additives gave rise to ignition of the reaction.…”

Section: Effect Of the Addition Of Silicon In The Mixture Ti + C On Cmentioning

confidence: 99%

“…Marin-Ayral). eral methods as chemical oven [4], preheating of reactants [5,6], [9] electric field utilization [7,8] and effect of activative additive [8] exist to help the ignition of the exothermic reaction.…”

Section: Introductionmentioning

confidence: 99%

Combustion synthesis of ceramic matrices for immobilization of 14C

Rouessac

Marin‐Ayral

Haidoux

et al. 2008

Journal of Alloys and Compounds

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“…Two kinds of SiAlON phases were prepared, Si 2 N 2 O and β-SiAlON [67][68][69]. The reactant mixtures consisted of silicon plus silica and silicon plus mullite (2SiO 2 -3Al 2 O 3 ), respectively.…”

Section: Shs Of Sialonmentioning

confidence: 99%

Main recent contributions to SHS from France

Nièpce

2007

Int. J Self-Propag. High-Temp. Synth.

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International audienceBoth in situ TRXRD and IR thermography, on the one hand, and different levels of modeling, on the other, have generated a strong progress in the knowledge and control of numerous SHS reactions. The SHS of simple binary materials, such as intermetallics (FeAl, MoSi2, NbAl3, etc.), oxides (e.g. ZrO2), carbides (e.g. SiC) or nitrides, more complex materials, such as mullite, SiAlONs, MAX phases, composites (SiO2-Al2O3, NiAl-ZrO2), powders in their more complicated states, such as well controlled microstructures, fully densified intermetallics, smart composites, and hard coatings carried out by GFA researchers greatly contributed to the worldwide competition to harness the potential of SHS. On the occasion of the 40th anniversary of SHS, this paper is giving an overview of the main results obtained by GFA over the last ten years

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Influence of thermal conditions on the combustion synthesis of Si2N2O phase

Cited by 7 publications

References 12 publications

Synthesis of a Novel Polyethoxysilsesquiazane and Thermal Conversion into Ternary Silicon Oxynitride Ceramics with Enhanced Thermal Stability

Synthesis of a Novel Polyethoxysilsesquiazane and Thermal Conversion into Ternary Silicon Oxynitride Ceramics with Enhanced Thermal Stability

Combustion synthesis of ceramic matrices for immobilization of 14C

Main recent contributions to SHS from France

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