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Abstract
Short-carbon-fibers (Csf) reinforced Ti3SiC2 matrix composites (Csf/Ti3SiC2, the Csf content was 0 vol%, 2 vol%, 5 vol%, and 10 vol%) were fabricated by spark plasma sintering (SPS) using Ti3SiC2 powders and Csf as starting materials at 1300 °C. The effects of Csf addition on the phase compositions, microstructures, and mechanical properties (including hardness, flexural strength (σf), and KIC) of Csf/Ti3SiC2 composites were investigated. The Csf, with bi-layered transition layers, i.e., TiC and SiC layers, were homogeneously distributed in the as-prepared Csf/Ti3SiC2 composites. With the increase of Csf content, the KIC of Csf/Ti3SiC2 composites increased, but the σf decreased, and the Vickers hardness decreased initially and then increased steadily when the Csf content was higher than 2 vol%. These changed performances (hardness, σf, and KIC) could be attributed to the introduction of Csf and the formation of stronger interfacial phases.
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Details
1 Northeastern University, School of Materials Science and Engineering, Shenyang, China (GRID:grid.412252.2) (ISNI:0000 0004 0368 6968); Chinese Academy of Sciences, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Shenyang, China (GRID:grid.9227.e) (ISNI:0000000119573309)
2 Northeastern University, School of Materials Science and Engineering, Shenyang, China (GRID:grid.412252.2) (ISNI:0000 0004 0368 6968)
3 Chinese Academy of Sciences, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Shenyang, China (GRID:grid.9227.e) (ISNI:0000000119573309)
4 Chinese Academy of Sciences, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Shenyang, China (GRID:grid.9227.e) (ISNI:0000000119573309); University of Science and Technology of China, School of Materials Science and Engineering, Shenyang, China (GRID:grid.59053.3a) (ISNI:0000000121679639)
5 Northeastern University, College of Science, Shenyang, China (GRID:grid.412252.2) (ISNI:0000 0004 0368 6968)