Verma, V.; García-Hernández, M.; Luna-Domínguez, J.H.; Suárez-Domínguez, E.J.; Monteiro Júnior, S.; Câmara-Cozza, R. Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System. Preprints2024, 2024021421. https://doi.org/10.20944/preprints202402.1421.v1
APA Style
Verma, V., García-Hernández, M., Luna-Domínguez, J.H., Suárez-Domínguez, E.J., Monteiro Júnior, S., & Câmara-Cozza, R. (2024). Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System. Preprints. https://doi.org/10.20944/preprints202402.1421.v1
Chicago/Turabian Style
Verma, V., Samuel Monteiro Júnior and Ronaldo Câmara-Cozza. 2024 "Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System" Preprints. https://doi.org/10.20944/preprints202402.1421.v1
Abstract
Present research focus on the effect of different processing routes on physical and mechanical properties of nano Ti(CN) based cermet’s with metallic binders. Tungsten carbide (WC) is added as secondary carbide and Ni-Co are added as metallic binders in nano Ti(CN) based cermet processed via Conventional and Spark Plasma Sintering (SPS). Systematic comparison of composition and sintering conditions for different cermet’s’ systems is done to design the novel composition and sintering conditions. Nano TiCN powder was prepared by 30hr of ball milling. Highest density of >98.5% percent was achieved for SPS processed cermet’s sintered at 1200°C and 1250°C for 3 min. at 60 MPa pressure in comparison to conventionally sintered cermet’s at 1400°C for 1hr with two stage compaction process, uniaxially at 150 MPa and isostatically at 300 MPa pressure respectively. Comparison of XRD analysis of milled powders of different time intervals was done to understand the characteristics of the as received and milled powders. Peak broadening was observed after 5 hr. of ball milling, and it increased till 30hr. Also, peak broadening and refined carbide size was observed in XRD and SEM micrograph of SPS processed cermet. TEM analysis of milled powder showed internal structure having regular periodic arrangement of planes. SEM (BSE) images of all cermets primarily showed three major microstructural phases of core-rim-binder with black, grey and white contrast respectively. In the present sintering conditions high hardness of ~16 GPa and fracture toughness of ~9 MPa m1/2 was obtained for SPS processed cermets sintered at higher temperature.
Chemistry and Materials Science, Ceramics and Composites
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