New advanced SiC-based composite materials for use in highly oxidizing environments: Synthesis of SiC/IrSi3

Camarano, Antonio; Giuranno, Donatella; Narciso, J.

doi:10.1016/j.jeurceramsoc.2019.10.018

Cited by 14 publications

(34 citation statements)

References 53 publications

(71 reference statements)

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“…To design and produce such composites with tailored properties, the reaction bonded/formed silicon carbide process, belonging to spontaneous/pressure-less infiltration mechanisms, has well-known benefits over other conventional and costly sintering techniques, namely lower processing parameters (i.e., temperature, pressure, and time) and nearly-net shape fabrication capabilities [13][14][15][16][17]. In fact, SiC/ZrSi 2 composites have already been successfully produced by the reactive infiltration of three different liquid Si-rich Si-Zr alloys into bi-modal SiC preforms [18].…”

Section: Introductionmentioning

confidence: 99%

Interfacial Phenomena between Liquid Si-rich Si-Zr Alloys and Glassy Carbon

et al. 2020

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To succeed in the design and optimization of liquid-assisted processes such as reactive infiltration for the fabrication of tailored refractory SiC/ZrSi 2 composites, the interfacial phenomena that occur when Si-rich Si-Zr alloys are in contact with glassy carbon (GC) were investigated for the first time by the sessile drop method at T = 1450 • C. Specifically, two different Si-rich Si-Zr alloys were selected, and the obtained results in terms of wettability, spreading kinetics, reactivity, and developed interface microstructures were compared with experimental observations that were previously obtained for the liquid Si-rich, Si-Zr, near-eutectic composition (i.e., Si-10 at.%Zr) that was processed under the same operating conditions. The increase of the Si content only weakly affected the overall phenomena that were observed at the interface. From the practical point of view, this means that even Si-Zr alloys with a higher Si content, with respect to the near eutectic alloy, may be potentially used as infiltrant materials.

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Section: Introductionmentioning

confidence: 99%

Interfacial Phenomena between Liquid Si-rich Si-Zr Alloys and Glassy Carbon

et al. 2020

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“…In the previous work the different microstructures obtained were commented [29]. However, the most important aspects of the composite material will be highlighted.…”

Section: Resultsmentioning

confidence: 92%

“…Therefore it is logical to think that a SiC / IrSiX composite material will be a material with a high resistance to oxidation. Previous studies of the authors have analyzed the compatibility of SiC with Ir [28] and the process of reactive infiltration of Si-Ir alloys in SiC-C porous preforms [29], where the infiltration process has been optimized, and SiC/IrSi3 composite has been manufactured.…”

Section: Introductionmentioning

confidence: 99%

SiC-IrSi<sub>3</sub> for High Oxidation Resistance

Camarano

Giuranno

Narciso

2019

Preprint

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SiC is a material with excellent mechanical and thermal properties, but with a high production cost. Obtaining SiC by reactive infiltration is an attractive method and at a much lower cost than the traditional sintering process. However, the reactive infiltration process presents a serious problem, which is the high residual silicon content, which decreases its range of application. The replacement of silicon with silicides is a widely used alternative. The present investigation shows the good mechanical properties of the SiC/IrSi3 composite material obtained by reactive infiltration of SiC/C preforms with Ir-Si alloys. The thermomechanical analysis shows a high compatibility of silicide with SiC. The presence of the silicide shows a substantial improvement against the oxidation of the SiC/Si composites.

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“…To design and produce such composites with tailored properties, the Reaction Bonded/Formed Silicon Carbide process, belonging to spontaneous/pressure-less infiltration mechanisms, has well known advantages over other conventional and costly sintering techniques, namely lower processing temperatures, shorter times and near-net shape fabrication capabilities [13][14][15][16][17]. In fact, SiC/ZrSi2 composites have been already successfully produced by the reactive infiltration of three different liquid Si-rich Si-Zr alloys into bi-modal SiC preforms [18].…”

Section: Introductionmentioning

confidence: 99%

Interfacial Phenomena between Liquid Si-Rich Si-Zr Alloys and Glassy Carbon

Giuranno

Polkowski

Bruzda

et al. 2020

Preprint

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To design and optimize liquid-assisted processes such as reactive infiltration for fabricating refractory SiC/ZrSi2 composites, basic investigations on the interfacial phenomena occurring when liquid Si-based alloys are in contact with C and SiC substrates, are key steps. Indeed, targeted wettability studies may provide helpful indications for finding the suitable set of operating conditions to succeed the fabrication of composites via the reactive infiltration and for predicting the key influencing mechanisms. The wettability of glassy carbon (GC) by two different Si-rich Si-Zr alloys as a function of the Si-content has been investigated by the sessile drop method at T = 1450°C. The more relevant results obtained in terms of equilibrium contact angle values, spreading kinetics, reactivity and developed interface microstructures are reported in the paper and compared with the behaviour previously observed in the Si-27Zr/GC system. The increase of Si-content only weakly affected the overall phenomena observed at the interface, which from the practical point of view means that even the Si-Zr alloys with higher Si-content, as respect to the eutectic alloy (Si-27Zr), could be potentially used as infiltrant materials.

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New advanced SiC-based composite materials for use in highly oxidizing environments: Synthesis of SiC/IrSi3

Cited by 14 publications

References 53 publications

Interfacial Phenomena between Liquid Si-rich Si-Zr Alloys and Glassy Carbon

Interfacial Phenomena between Liquid Si-rich Si-Zr Alloys and Glassy Carbon

SiC-IrSi<sub>3</sub> for High Oxidation Resistance

Interfacial Phenomena between Liquid Si-Rich Si-Zr Alloys and Glassy Carbon

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