Features of Production and High-Temperature Oxidation of SHS-Ceramics Based on Zirconium Boride and Zirconium Silicide

Яцюк, И. В.; Погожев, Ю. С.; Левашов, Е. А.; Новиков, А. В.; Кочетов, Н. А.; Kovalev, D.

doi:10.17073/1997-308x-2017-1-29-41

Cited by 4 publications

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“…Calculated effective activation energy E eff was found to be 63 kJ mol −1 for ZrB2–20%Si and 130 kJ mol −1 for ZrB2–50%ZrSi2, suggesting that the interaction of zirconium with boron and silicon through the forming Zr–Si–B melt was the leading stage of the combustion. ZrB 2 grains formed in the combustion front due to the crystallization of the melt and ZrSi 2 phase crystallized 0.5 s later …”

Section: Shs In Zr–si–b Systemmentioning

confidence: 99%

“…The residual porosity of the ZrB 2 –20%Si and ZrB 2 –50%ZrSi 2 composites was 2.7–5.8%, Vickers hardness HV10 9.6–14.2 GPa . ZrB 2 –ZrSi 2 –SiC ceramics were also produced by a combination of simultaneous SHS and spark plasma sintering, also known as reaction spark plasma sintering, or RSPS .…”

Section: Shs In Zr–si–b Systemmentioning

confidence: 99%

“…Experimental investigation of the high‐temperature oxidation of the Zr–Si–B ceramics was conducted in . As a result of oxidation, SiO 2 –ZrO 2 –ZrSiO 4 –(B 2 O 3 ) layer was formed, serving as an effective diffusion barrier.…”

Section: Shs In Zr–si–b Systemmentioning

confidence: 99%

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SHS of Silicon‐Based Ceramics for the High‐Temperature Applications

et al. 2018

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High-temperature materials attract a growing interest from both the scientists and engineers, since the increase of the operating temperatures is crucial for the enhancement of many energy conversion processes. Another area of application of high-temperature materials is high-velocity air flight, where the ultra-high temperature ceramics (UHTCs) are pivotal for the creation of robust nose tips and leading edges of the skins of high-velocity jets. Compounds of refractory metals with silicon, such as TaSi 2 , MoSi 2 , ZrSi 2 , are characterized by unrivaled resistance in aggressive environments. However, most of them are not suitable for application as high-temperature structural materials due to the low mechanical properties. Therefore, they are frequently used as a constituent for the high-temperature composite materials such as TaSi 2 -SiC, ZrC-MoSi 2 , ZrB 2 -MoSi 2 , ZrB 2 -ZrSi 2 . One of the most convenient ways of producing these composite materials is self-propagating hightemperature synthesis (SHS), known for its high productivity, energyefficiency, and ecological safety. This review summarizes the latest developments of the SHS of the silicon-based high-temperature ceramics.

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Section: Shs In Zr–si–b Systemmentioning

confidence: 99%

Section: Shs In Zr–si–b Systemmentioning

confidence: 99%