Self-propagating high temperature synthesis of SiC–Cu and SiC–Al cermets: Role of chemical activation

Zurnachyan, A. R.; Kharatyan, S. L.; Khachatryan, Hayk; Kirakosyan, Artavazd

doi:10.1016/j.ijrmhm.2010.11.002

Cited by 17 publications

(5 citation statements)

References 19 publications

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“…The most significant fabrication methods, such as hot pressing [1], hot isostatic pressing [2], self-propagating high-temperature synthesis [3], pulsed and spark plasma sintering (PPS, SPS) [4] and arc-melting [5], are based on the use of powder metallurgy techniques. However, the fabrication of composites with extraordinary properties via powder metallurgy has several limitations, including the formation of oxide layers around the metal powder particles and the clustering of particles within the material [6] so that further processing is frequently required to improve their mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

A multiscale experimental analysis of mechanical properties and deformation behavior of sintered copper–silicon carbide composites enhanced by high-pressure torsion

Nosewicz

Bazarnik

Clozel

et al. 2021

Archiv.Civ.Mech.Eng

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Experiments were conducted to investigate, within the framework of a multiscale approach, the mechanical enhancement, deformation and damage behavior of copper–silicon carbide composites (Cu–SiC) fabricated by spark plasma sintering (SPS) and the combination of SPS with high-pressure torsion (HPT). The mechanical properties of the metal–matrix composites were determined at three different length scales corresponding to the macroscopic, micro- and nanoscale. Small punch testing was employed to evaluate the strength of composites at the macroscopic scale. Detailed analysis of microstructure evolution related to SPS and HPT, sample deformation and failure of fractured specimens was conducted using scanning and transmission electron microscopy. A microstructural study revealed changes in the damage behavior for samples processed by HPT and an explanation for this behavior was provided by mechanical testing performed at the micro- and nanoscale. The strength of copper samples and the metal–ceramic interface was determined by microtensile testing and the hardness of each composite component, corresponding to the metal matrix, metal–ceramic interface, and ceramic reinforcement, was measured using nano-indentation. The results confirm the advantageous effect of large plastic deformation on the mechanical properties of Cu–SiC composites and demonstrate the impact on these separate components on the deformation and damage type.

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Section: Introductionmentioning

confidence: 99%

A multiscale experimental analysis of mechanical properties and deformation behavior of sintered copper–silicon carbide composites enhanced by high-pressure torsion

Nosewicz

Bazarnik

Clozel

et al. 2021

Archiv.Civ.Mech.Eng

View full text Add to dashboard Cite

show abstract

“…For approaching this aim adding diverse elements as reinforcement is one of the most common methods [9]. Studies have been conducted to investigate the effect of different elements like TiO2 [7,10], SiC [11], Al2O3 [12], etc.…”

Section: Introductionmentioning

confidence: 99%

Wear behavior of self-propagating high-temperature synthesized Cu-TiO2 nanocomposites

et al. 2021

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In this paper, the copper-based nanocomposites with TiO2 nanoparticles were synthesized by the self-propagating high-temperature synthesis (SHS) process. The effect of the different amounts of excess copper, in comparison with the stoichiometric ratio (CuO:Ti ratios of 1:1, 2:1, and 3:1), on the phase formation of achieved samples was studied. A thermodynamical study showed that increasing the excess copper powder reduces the adiabatic temperature, which helps the phase formation. The maximum Brinell hardness (89) was obtained for the sample with the CuO:Ti ratio of 1:1. Finally, the wear behavior of the synthesized nanocomposites was evaluated by the pin on disk test, and the variation of friction coefficient and lost weight were measured. The friction coefficient decreased by the formation of phases and distribution of titanium oxide particles during the SHS process in the presence of the stoichiometric ratio of CuO:Ti. Therefore, the wear behavior was improved. The lowest depth of wear trace was measured 0.68 where the ratio of CuO: Ti was 1:1.

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“…These metal additions also form substitution compounds with boron carbide. [12][13][14][15][16][17][18] As compared to conventional sintering methods, SPS is regarded as a rapid sintering method that generates highly sintered products in less sintering time with finer grain sizes. [19,20] In the SPS process, the graphite mould and stacked powder experience direct heating by the large pulsed current.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on SiC-B4C-Si Cermet Prepared by Pressureless Sintering and Spark Plasma Sintering Methods

Sahani

Karak

Mishra

et al. 2016

Metall Mater Trans A

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Self-propagating high temperature synthesis of SiC–Cu and SiC–Al cermets: Role of chemical activation

Cited by 17 publications

References 19 publications

A multiscale experimental analysis of mechanical properties and deformation behavior of sintered copper–silicon carbide composites enhanced by high-pressure torsion

A multiscale experimental analysis of mechanical properties and deformation behavior of sintered copper–silicon carbide composites enhanced by high-pressure torsion

Wear behavior of self-propagating high-temperature synthesized Cu-TiO2 nanocomposites

A Comparative Study on SiC-B4C-Si Cermet Prepared by Pressureless Sintering and Spark Plasma Sintering Methods

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