Dense Ti3AlC2 based materials obtained by SHS-extrusion and compression methods. Issue 2 (1st February 2019)

• Record Type: Journal Article
• Authors: Pazniak, A.; Bazhin, P.; Shchetinin, I.; Kolesnikov, E.; Prokopets, A.; Shplis, N.; Stolin, A.; Kuznetsov, D.
• Is Part Of: Ceramics international. Volume 45:Issue 2(2019)Part A
• Page Start: 2020
• Page End: 2027
• Publication Date: 2019-02-01
• Subjects: A. Sintering -- С. Mechanical properties -- D. Carbides; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.10.101
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: MAX phases (M: early transitionA:13 and 14 group A-element; X:C and/or N) are ternary carbides/nitrides with a unique combination of metallic and ceramic properties. Bulk MAX phases can be prepared from different starting materials and pre-synthesized powders mostly at high temperature and long sintering time. Here, we prove an efficient one-step technological method to produce bulk MAX phase based materials using self-propagation high-temperature synthesis. We show that bulk materials (relative density of 95.5% and 97.2%) can be produced in the form of plates and rods with 67.5% wt. and 81.9% wt. of MAX phases. The compressive strength of 720 ± 2 and 641.5 ± 2 MPa Young's modulus of 221.5 ± 4 and 198.3 ± 2.8 GPa, and thermal conductivity of 22.9 and 22.3 W m −1 K −1 are achieved as a result of extrusion and compression self-propagation high-temperature synthesis. The sintered materials are good thermal conductors with high mechanical characteristics that can be used as promising materials for high-temperature application.