Synthesis of Ti3SiC2/TiC composites from TiH2/SiC/TiC powders

Konoplyuk, S. M.; Abe, Toshihiko; Uchimoto, Tetsuya; Takagi, Toshiyuki

doi:10.1016/j.matlet.2005.02.077

Cited by 37 publications

(25 citation statements)

References 20 publications

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“…While hot-pressing has remained an important method for bulk synthesis [203,204,205,206,207,208] for research purposes, pressureless sintering [209,210,211,212,213,214,215] may be more commercially viable. Other methods for processing of bulk MAX phases are variations of self-propagating high-temperature synthesis [216,217,218,219,220], spark plasma sintering [221,222,223,224,225] or pulse discharge sintering [226,227,228,229,230,231], and solidliquid reaction synthesis [232,233,234]. Recent innovative approaches to bulk synthesis include three-dimensional printing [235], the use of Al or Sn, respectively, as catalysts for growth of 38 Ti 3 SiC 2 and Ti 3 AlC 2 [210,236,237], and design of crystalline precursors for solid phase reaction synthesis [238].…”

Section: Bulk Synthesis Methodsmentioning

confidence: 99%

The M+1AX phases: Materials science and thin-film processing

et al. 2010

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This article is a critical review of the M n+1 AX n phases ("MAX phases", where n =1, 2, or 3) from a materials science perspective. MAX phases are a class of hexagonal-structure ternary carbides and nitrides ("X") of a transition metal ("M") and an A-group element. The most well known are Ti 2 AlC, Ti 3 SiC 2 , and Ti 4 AlN 3 . There are ~60 MAX phases with at least 9 discovered in the last five years alone. What makes the MAX phases fascinating and potentially useful is their remarkable combination of chemical, physical, electrical, and mechanical properties, which in many ways combine the characteristics of metals and ceramics. For example, MAX phases are typically resistant to oxidation and corrosion, elastically stiff, but at the same time they exhibit high thermal and electrical conductivities and are machinable. These properties stem from an inherently nanolaminated crystal structure, with M n+1 X n slabs intercalated with pure A-element layers. The research on MAX phases has been accelerated by the introduction of thin-film processing methods.Magnetron sputtering and arc deposition have been employed to synthesize single-crystal material by epitaxial growth, which enables studies of fundamental materials properties. However, the surface-initiated decomposition of M n+1 AX n thin films into MX compounds at temperatures of 1000-1100 °C is much lower than the decomposition temperatures typically reported for the corresponding bulk material. We also review the prospects for low-temperature synthesis, which is essential for deposition of MAX phases onto technologically important substrates. While deposition of MAX phases from the archetypical Ti-Si-C and Ti-Al-N systems typically require synthesis temperatures of ~800 °C, recent results have demonstrated that V 2 GeC and Cr 2 AlC can be deposited at ~450 °C. Also, thermal spray of Ti 2 AlC powder has been used to produce thick coatings. We further treat progress in the use of first-principles calculations for predicting hypothetical MAX phases and their properties. Together with advances in processing and materials 3 analysis, this progress has led to recent discoveries of numerous new MAX phases such as Ti 4 SiC 3 , Ta 4 AlC 3 , and Ti 3 SnC 2 . Finally, important future research directions are discussed. These include charting the unknown regions in phase diagrams to discover new equilibrium and metastable phases, as well as research challenges in understanding their physical properties, such as the effects of anisotropy, impurities, and vacancies on the electrical properties, and unexplored properties such as superconductivity, magnetism, and optics. 4

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Section: Bulk Synthesis Methodsmentioning

confidence: 99%

The M+1AX phases: Materials science and thin-film processing

et al. 2010

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“…Наконец, в работах [24,26,28,29,42] показана принципиальная воз-можность упрочнения спеченного титанокремнистого карбида Ti 3 SiC 2 в низко-и высокопористом состояниях путем естественного введения частиц второй фазы TiC (образование in-situ композитов Ti 3 SiC 2 /TiC).…”

Section: обоснование возможности решения проблемы высокотемпера-турныunclassified

Strength and Plasticity of the Sintered Materials on the Base of a Titanium Nanolaminate Ti$_{3}$SiC$_{2}$

2006

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На примере одного из наиболее изученных тройных соединений нового класса материалов наноламинатов, -титанокремнистого карбида Ti 3 SiC 2 , изготовленного методом реакционного спекания порошковой смеси элементов и двойных соединений, -выполнены системный анализ и обобщение влияния изученных структурных и фазовых изменений, происходящих в этом материале при различных видах обработки, на за-кономерности, особенности и механизмы процессов деформации, упроч-нения и разрушения в интервале температур 20-1300С. Обсуждены воз-можности повышения характеристик пластичности, прочности и разру-шения титанокремнистого карбида Ti 3 SiC 2 в пористом состоянии по срав-нению с компактным. Показано, что снижение прочности пористых ма-териалов может быть в значительной мере компенсировано, а в ряде слу-чаев превышено путем использования ряда факторов. Таковыми являют-ся: измельчение зеренной структуры, высокотемпературная термомеха-ническая обработка, создание двухфазного in-situ композита Ti 3 SiC 2 /TiC, азотирование высокопористого материала. Разработаны физические ос-новы одновременного повышения характеристик низкотемпературной пластичности, высокотемпературной прочности и сопротивления разру-шению материала в компактном и пористом состояниях.На прикладі однієї з найбільш вивчених потрійних сполук нової кляси ма-теріялів нанолямінатів, -титанокремністого карбіду Ti 3 SiC 2 , виготовле-ного методою реакційного спікання порошкової суміші елементів і подвій-них сполук, -виконано системну аналізу і узагальнення впливу вивчених структурних і фазових змін, що відбуваються в цьому матеріялі при ріж-них видах обробки, на закономірності, особливості і механізми процесів деформації, зміцнення й руйнування в інтервалі температур 20-1300С. Визначено можливості підвищення характеристик пластичности, міцности й руйнування титанокремністого карбіду Ti 3 SiC 2 у пористому стані в порів-нянні з компактним. Показано, що зниження міцности пористих матерія-лів може бути в значній мірі компенсовано, а в ряді випадків перевищено Успехи физ. мет. / Usp. Fiz. Met. 2006, т. 7, сс. 243-281 Îòòèñêè äîñòóïíû íåïîñðåäñòâåííî îò èçäàòåëÿ Ôîòîêîïèðîâàíèå ðàçðåøåíî òîëüêî â ñîîòâåòñòâèè ñ ëèöåíçèåé 2006 ÈÌÔ (Èíñòèòóò ìåòàëëîôèçèêè èì. Ã. Â. Êóðäþìîâà ÍÀÍ Óêðàèíû) Íàïå÷àòàíî â Óêðàèíå.

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“…The formation of ternary titanium carbides Ti 3 SiC 2 and Ti 3 AlC 2 involves an intermediate phase, binary titanium carbide TiC, and the formation of ternary titanium nitride Ti 4 AlN 3 involves binary titanium nitride TiN [9][10][11]. It is shown in [12] that reaction sintering of a powder mixture consisting of TiH 2 + TiC (1) + SiC at 1300°C and 50 MPa can involve the formation of secondary titanium carbide TiC (2) . Its content in the product can be controlled by varying the amounts of ingredients in the charge and regulating the completeness of the reaction through sintering conditions.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of porous Ti3SiC2/TiC, Ti3AlC2/TiC, and Ti4AlN3/TiN nanolaminates at 20 to 1300°C

Фирстов

Gorban

Ivanova

et al. 2010

Powder Metall Met Ceram

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The microindentation, macrohardness, and uniaxial compression methods are used to examine the effect of porosity (5-35%), content of the other phase (TiC or TiN,.%), and loading temperature (20-1300°C) on the mechanical properties of Ti 3 SiС 2 /TiС, Ti 3 AlС 2 /TiС, and Ti 4 AlN 3 /TiN nanolaminate composites produced by reaction sintering of powder mixtures. A comparative analysis of the mechanical properties shows that the strength of the materials increases in the following sequence: Ti 3 AlС 2 /TiС, Ti 4 AlN 3 /TiN, and Ti 3 SiС 2 /TiС. Temperature-strain and force boundaries of their existence in the deformed state are established. Among all porous nanolaminate composites investigated, Ti 3 SiС 2 /TiС is the most optimal in respect to porosity, content of the other phase, and strength: 24% porosity and 30 vol.% titanium carbide.

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Synthesis of Ti3SiC2/TiC composites from TiH2/SiC/TiC powders

Cited by 37 publications

References 20 publications

The M+1AX phases: Materials science and thin-film processing

The M+1AX phases: Materials science and thin-film processing

Strength and Plasticity of the Sintered Materials on the Base of a Titanium Nanolaminate Ti$_{3}$SiC$_{2}$

Mechanical properties of porous Ti3SiC2/TiC, Ti3AlC2/TiC, and Ti4AlN3/TiN nanolaminates at 20 to 1300°C

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