Iranian Journal of Materials Science and Engineering
Iran University of Science & Technology
Fri, Nov 8, 2024
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Volume 9, Issue 2 (june 2012 2012)
IJMSE 2012, 9(2): 41-49 |
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S. Safi, R. Yazdani Rad, A. Kazemzade, Y. Safaei Naeini, F. Khorasanizadeh. EFFECT OF NANO SiC ADDITIVE ON MCMB-SiC COMPOSITE FABRICATION VIA MOLTEN SILICON INFILTRATION. IJMSE 2012; 9 (2) :41-49
URL: http://ijmse.iust.ac.ir/article-1-439-en.html
URL: http://ijmse.iust.ac.ir/article-1-439-en.html
Abstract: (57174 Views)
C-SiC composites with carbon-based mesocarbon microbeads (MCMB) preforms are new type of highpreformance and high-temperature structural materials for aerospace applications. In this study MCMB-SiC composites with high density (2.41 g.cm-3) and high bending strength (210 MPa,) was prepared by cold isostatic press of mixed mesophase carbon powder derived from mesophase pitch with different amount (0, 2.5, 5%) nano SiC particles. All samples were carbonized under graphite bed until 1000 °C and finally liquid silicon infiltration (LSI). Microstructure observations resultant samples were performed by scanning electron microscopy and transition electron microscopy (SEM & TEM). Density, porosity and bending strength of final samples were also measured and calculated. Results indicates that the density of samples with nano additive increased significantly in compare to the free nano additives samples.
Type of Study: Research Paper |
Subject:
materials engineeing and special subjects
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