Synthesis of copper metal matrix composites reinforced with hard carbides via in-situ and ex-situ thermal plasma spraying
| Parent link: | Composites Communications.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 61.— 2026.— Article number 102680, 11 p. |
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| Other Authors: | , , , , , , |
| Summary: | Title screen Copper metal matrix composites (MMCs) are promising materials applied in advanced engineering applications under extreme mechanical loads and increased heat fluxes. However, the limitations of known synthesis approaches still negatively affect their widespread adoption and result in the inability to achieve predicted performance. This work demonstrates a versatile method of plasma dynamic synthesis based on applying a thermal plasma spraying process to produce powdered copper MMCs reinforced with ceramic components of hard carbides (WC, B4C, and TiC). This method allows implementing two main strategies for obtaining copper MMCs, including ex-situ one, when the metal matrix (Cu) and ceramic carbide component are synthesized separately with subsequent mixing, and in-situ one, when all components directly interact under the influence of arc discharge plasma. Both strategies result in producing dispersed MMCs with a given amount of hard carbide component (∼10 wt %) and polymodal particle size distribution from tens of nanometers to hundreds of micrometers. The positive effect of in-situ MMCs synthesis is reaching higher densities when producing bulk samples by a spark plasma sintering technique (69–89 % for ex-situ versus 84–95 % for in-situ) due to preliminary bonding of the matrix and ceramic component. Such features of bulk samples from in-situ synthesized MMCs provide higher mechanical (92 HV for Cu + WC, 129 HV for Cu + B4C, 131 HV for Cu + TiC) and thermal properties (152 W/m∙K for Cu + WC, 137 W/m∙K for Cu + TiC). These findings corroborate the preference for in-situ MMC preparation and provide a foundation for the continued advancement of the considered plasma spraying method Текстовый файл AM_Agreement |
| Language: | English |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.coco.2025.102680 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=684678 |