Molten salt-assisted combustion synthesis and characterization of MoSi2 and MoSi2-Si3N4 composite powders

Manukyan, Kh.V.; Aydinyan, Sofiya; Kirakosyan, Kh.G.; Kharatyan, S. L.; Blugan, Gurdial; Müller, Ulrich; Kuebler, Jakob

doi:10.1016/j.cej.2008.06.013

Cited by 24 publications

(21 citation statements)

References 31 publications

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“…NaCl has been introduced as a novel combustion synthesis diluent for the fabrication of ceramics such as TiC, ZrB 2 , and MoSi 2 powders [19][20][21]. In these studies, NaCl was shown to decrease the adiabatic temperature and wave velocity, stabilizing the combustion reaction, and thereby reducing the rate of aggregation and grain growth.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of AlN particles and whiskers via salt-assisted combustion synthesis

Niu

Suzuki

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Fabrication of AlN particles and whiskers via salt-assisted combustion synthesis

Niu

Suzuki

et al. 2015

Ceramics International

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“…Moreover, the addition of a metallic phase or ceramic compound contributed to an improvement in the creep resistance, fracture toughness, and high-temperature strength of MoSi 2 . Studies have been performed on many reinforcements, such as Al, W, Cu, SiC, Si 3 N 4 , ZrB 2 , and Al 2 O 3 [10][11][12][13][14][15][16][17][18]. The incorporation of Al 2 O 3 or Si 3 N 4 to MoSi 2 has received particular attention due to excellent Metals 2016, 6, 235 2 of 8 thermal stability and a close match of their thermal expansion coefficients [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…The incorporation of Al 2 O 3 or Si 3 N 4 to MoSi 2 has received particular attention due to excellent Metals 2016, 6, 235 2 of 8 thermal stability and a close match of their thermal expansion coefficients [15][16][17][18]. Preparation of the MoSi 2 -Si 3 N 4 composites was investigated by Manukyan et al [17,18] using molten salt-assisted combustion synthesis, in which a series of experiments adopting the Mo-5Si-0.5NaCl-mSi 3 N 4 (0.7 ≤ m ≤ 1.65) samples was conducted in nitrogen from 1 to 5 MPa. NaCl acted as an inert diluent to control the combustion temperature and aided in transportation of the reactant species.…”

Section: Introductionmentioning

confidence: 99%

“…Studies have been performed on many reinforcements, such as Al, W, Cu, SiC, Si 3 N 4 , ZrB 2 , and Al 2 O 3 [10][11][12][13][14][15][16][17][18]. The incorporation of Al 2 O 3 or Si 3 N 4 to MoSi 2 has received particular attention due to excellent Metals 2016, 6, 235 2 of 8 thermal stability and a close match of their thermal expansion coefficients [15][16][17][18]. Preparation of the MoSi 2 -Si 3 N 4 composites was investigated by Manukyan et al [17,18] using molten salt-assisted combustion synthesis, in which a series of experiments adopting the Mo-5Si-0.5NaCl-mSi 3 N 4 (0.7 ≤ m ≤ 1.65) samples was conducted in nitrogen from 1 to 5 MPa.…”

Section: Introductionmentioning

confidence: 99%

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Combustion Synthesis of MoSi2-Al2O3 Composites from Thermite-Based Reagents

Yeh

Peng

2016

Metals

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Formation of MoSi 2 -Al 2 O 3 composites with a broad range of the MoSi 2 /Al 2 O 3 ratio was conducted by thermite-based combustion synthesis in the SHS mode. The addition of two thermite mixtures composed of MoO 3 + 2Al and 0.6MoO 3 + 0.6SiO 2 + 2Al into the Mo-Si reaction systems facilitated self-sustaining combustion and contributed to in situ formation of MoSi 2 and Al 2 O 3 . The samples adopting the former thermite reagent were more exothermic and produced composites with MoSi 2 /Al 2 O 3 from 2.0 to 4.5, beyond which combustion failed to proceed. Because of lower exothermicity of the reactions, the final products with MoSi 2 /Al 2 O 3 from 1.2 to 2.5 were fabricated from the SHS process involving the latter thermite mixture. Combustion temperatures of both reaction systems decreased from about 1640 to 1150 • C with increasing MoSi 2 /Al 2 O 3 proportion, which led to a phase transition of MoSi 2 . It was found that the dominant silicide was β-MoSi 2 when the combustion temperature of the synthesis reaction exceeded 1550 • C and shifted to α-MoSi 2 as the combustion temperature fell below 1320 • C. The results of this study showed an energy-efficient fabrication route to tailor the phase and content of MoSi 2 in the MoSi 2 -Al 2 O 3 composite.

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“…Alternatively, hot-pressing (HP) has been widely used for sintering and developing different materials [24,25], including composite materials, such as hardmetals and cermets [26,27]. This method allows obtaining materials with higher densification, a more uniform fine-grained microstructure, improved physical and mechanical properties and high reliability compared to conventional processes [28].…”

Section: Introductionmentioning

confidence: 99%

Hot-pressing of (Ti, Mt)(C, N)–Co–Mo 2 C (Mt = Ta, Nb) powdered cermets synthesized by a mechanically induced self-sustaining reaction

Chicardi

Gotor

Medri

et al. 2016

Chemical Engineering Journal

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A mechanically induced self-sustaining reaction (MSR) has been successfully employed for manufacturing powdered cermets based on Ti, Ti-Ta and Ti-Nb carbonitrides using Co as the binder phase and Mo2C as the sintering additive. The powders were sintered by hot-pressing, and complete chemical, microstructural and mechanical characterizations were performed on the densified cermets. When elemental Ta, Nb and/or Mo2C were added to the initial raw mixture submitted to the MSR process, smaller ceramic grains were observed after sintering, which suggested that ceramic particle growth was hindered by the presence of Ta, Nb and/or Mo in the host titanium carbonitride structure. Nanoindentation measurements enabled the determination of the hardness of the ceramic and binder phases, and values in the range of 26-29 GPa and 14-16 GPa were found, respectively. The high hardness values of the binder were related to the formation of intermetallic phases.2

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Molten salt-assisted combustion synthesis and characterization of MoSi2 and MoSi2-Si3N4 composite powders

Cited by 24 publications

References 31 publications

Fabrication of AlN particles and whiskers via salt-assisted combustion synthesis

Fabrication of AlN particles and whiskers via salt-assisted combustion synthesis

Combustion Synthesis of MoSi2-Al2O3 Composites from Thermite-Based Reagents

Hot-pressing of (Ti, Mt)(C, N)–Co–Mo 2 C (Mt = Ta, Nb) powdered cermets synthesized by a mechanically induced self-sustaining reaction

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