Fabrication and Mechanical Property of ZrC/Cr2AlC Composites
【Abstract】Cr2AlC is a representative material in MAX phase family due to its combination of metallic and ceramic properties such as high electrical conductivity, high thermal conductivity, resistance to corrosion, good oxidation resistance. To further improve the performance of Cr2AlC, ZrC as a reinforcement was selected to reinforce Cr2AlC matrix composites by hot pressing technique. The influence of ZrC content on the mechanical property of ZrC/Cr2AlC composites was investigated. The results showed that the 10 vol% ZrC/Cr2AlC composite improved the flexural strength (715 MPa) and Vickers hardness (7 GPa) by 80% and 106%, respectively, as compared with those of the pure Cr2AlC material. The data from this study indicate that Cr2AlC MAX possesses broad application potential.
【Keywords】 ZrC/Cr2AlC; composite; mechanical property; microstructure;
(Translated by LI ZP)
 BARSOUM M W. The Mn+1AXn phases: a new class of solids; thermodynamically stable nanolaminates. Prog. Solid State Chem., 2000, 28: 201–281.
 SUN Z M. Progress in research and development on MAX phases: a family of layered ternary compounds. Int. Mater. Rev., 2011, 56 (3): 143–166.
 WANG J Y, ZHOU Y C. Recent progress in theoretical prediction, preparation, and characterization of layered ternary transition metal carbides. Annu. Rev. Mater. Res., 2009, 39 (1): 415–443.
 LI S B, YU W B, ZHAI H X, et al. Mechanical properties of low temperature synthesized dense and fine grained Cr2AlC ceramics. J. Eur. Ceram. Soc., 2011, 31 (1/2): 217–224.
 YU W B, LI S B, SLOOF W G. Microstructure and mechanical properties of a Cr2Al(Si)C solid solution. Mater. Sci. Eng. A, 2010, 527 (21/22): 5997–6001.
 LI S B, LI H L, ZHOU Y, et al. Mechanism for abnormal thermal shock behavior of Cr2AlC. J. Eur. Ceram. Soc., 2014, 34 (5): 1083–1088.
 LI H L, LI S B, ZHOU Y. Cyclic thermal shock and crack healing behavior of a Cr2AlC ceramic. Mater. Sci. Eng. A, 2014, 607: 525–529.
 LI S B, XIAO L O, SONG G M, et al. Oxidation and self-healing behavior of a fine-grained Cr2AlC ceramic. J. Am. Ceram. Soc., 2013, 96 (3): 892–899.
 WANG Y G, ZHU X J, ZHANG L T, et al. Reaction kinetics and ablation properties of C/C-ZrC composites fabricated by reactive melt infiltration. Ceram. Int., 2011, 37 (4): 1277–1283.
 ZHAO D, ZHANG C, HU H, et al. Ablation behavior and mechanism of 3D C/ZrC composite in oxyacetylene torch environment. Comp. Sci. Tech., 2011, 71 (11): 1392–1396.
 LI H L, LI S B, ZHANG L Q, et al. Synthesis and ultra-high temperature ablation behavior of a ZrC/Cr2AlC composite. Ceram. Int., 2016, 42 (5): 5686–5692.
 XIAO L O, LI S B, SONG G M, et al. Synthesis and thermal stability of Cr2AlC. J. Euro. Ceram. Soc., 2011, 31 (8): 1497–1502.
 AI M X, ZHAI H X, ZHOU Y, et al. Synthesis of Ti3AlC2 powders using Sn as an additive. J. Am. Ceram. Soc., 2006, 89 (3): 1114–1117.
 BARSOUM M W, ALI M, EL-RAGHY T. Processing and characterization of Ti2AlC, Ti2AlN and Ti2AlC0.5N0.5. Met. Mater. Trans. A, 2000, 31 (7): 1857–1865.
 NINO A, TANAKA A, SUGIYAMA S, et al. Indentation size effect for the hardness of refractory carbides. Mater. Trans., 2010, 51 (9): 1621–1626.
 ZHU J, JIANG H, WANG F, et al. Synthesis, microstructure and mechanical properties of Cr2AlC/Al2O3 in situ composites by reactive hot pressing. J. Eur. Ceram. Soc., 2014, 34 (16): 4137–4144.
 YING G, HE X, LI M, et al. Effect of Cr7C3 on the mechanical, thermal, and electrical properties of Cr2AlC. J. Alloys Compd., 2011, 509 (31): 8022–8027.
 GONZALEZ-JULIANA J, LLORENTE J, BRAM M, et al. Novel Cr2AlC MAX-phase/SiC fiber composites: synthesis, processing and tribological response. J. Euro. Ceram. Soc., 2017, 37 (2): 467–475.