Characteristic properties of combustion and structure formation in the Ti-Ta-C system

Левашов, Е. А.; Курбаткина, В. В.; Rogachev, A. S.; Кочетов, Н. А.; Пацерa, Е. И.; Сачкова, Н. В.

doi:10.3103/s1067821208050179

Cited by 24 publications

(31 citation statements)

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“…Ta–Ti–C mixtures with 9.5% and 28.1% Та, prepared in a ball mill, show a drastic increase of the T c and U c in case of Т 0 higher than 450 К, which suggests the change of combustion mechanism. For the MA mixtures with the same compositions, no inflection point is present on the T c and U c curves . However, at the temperature higher than 420–470 К, the combustion mode for the MA mixtures changes from layer by layer combustion to volume combustion.…”

Section: та–Ti–c Systemmentioning

confidence: 94%

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SHS Processing and Consolidation of Ta–Ti–C, Ta–Zr–C, and Ta–Hf–C Carbides for Ultra‐High‐Temperatures Application

et al. 2018

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This review addresses the structure and phase formation mechanisms of self-propagating high-temperature synthesis (SHS) of single-phase complex carbides Ta-Ti/Zr/Hf-C, as well as the consolidation of synthesized carbides by various sintering methods. Properties of the synthesized and consolidated complex carbides are described, and unique advantages of SHS method for the synthesis of ultra-high temperature complex single-phase carbides are highlighted.

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Section: та–Ti–c Systemmentioning

confidence: 94%

“…Investigation of the influence of Т 0 on the Т c and U c showed that mixtures prepared in ball mill are characterized by linear increase of the combustion temperature Т c in the 293–470 К interval of Т 0 (Figure , curves a–c) …”

Section: та–Ti–c Systemmentioning

confidence: 99%

SHS Processing and Consolidation of Ta–Ti–C, Ta–Zr–C, and Ta–Hf–C Carbides for Ultra‐High‐Temperatures Application

et al. 2018

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“…В обеих си стемах имеются две основные химические реакции, одна из которых протекает по механизму реакци онной диффузии через расплав, а другая -при су щественной роли газофазного переноса одного ре агента к другому. Так, в работах [18,19] в широком диапазоне значений параметра зашихтовки Х смеси (90 % -X)(Ti + 0,5C) + X(Ta + C) обнаружены тем пературные профили волны горения с двумя харак терными максимумами тепловыделения, свидетель ствующие о протекании горения в режиме отрыва в результате последовательных химических реак ций. Напротив, с ростом параметра зашихтовки и начальной температуры Т 0 происходит слияние двух максимумов и горение переходит из режима отрыва в режим слияния, когда последовательные реакции становятся параллельными.…”

Section: № 4 2013unclassified

“…2). Объясня ется это тем, что в составе 2 изза малой концентра ции бора (4,18 %) по сравнению с кремнием (21,7 %) и сравнительно невысокого теплового эффекта реакции (2) в сопоставлении с реакцией (1) вклад тепловыделения от образования борида молибде на в общее тепловыделение не является настолько значимым (в отличие от системы Ti-Ta-C [18,19]), чтобы появился перегиб на зависимости U г (Т 0 ).…”

Section: результаты исследований и их обсуждениеunclassified

“…Основной структурной составляющей керами ки состава 3 являются крупные зерна Т 2 фазы со средним размером [10][11][12][13][14][15][16][17][18][19][20] Образцы состава 3 на основе Т 2 фазы облада ют высокой удельной плотностью (ρ гидр ) и твер достью (HV).…”

Section: результаты исследований и их обсуждениеunclassified

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Combustion features in the Mo–Si–B system. Part 1. Mechanism and kinetics

Левашов¹,

Погожев²,

Потанин³

et al. 2015

Izv. vuzov, Porošk. metall. funkc. pokryt.

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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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Characteristic properties of combustion and structure formation in the Ti-Ta-C system

Cited by 24 publications

References 5 publications

SHS Processing and Consolidation of Ta–Ti–C, Ta–Zr–C, and Ta–Hf–C Carbides for Ultra‐High‐Temperatures Application

SHS Processing and Consolidation of Ta–Ti–C, Ta–Zr–C, and Ta–Hf–C Carbides for Ultra‐High‐Temperatures Application

Combustion features in the Mo–Si–B system. Part 1. Mechanism and kinetics

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

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