Fabrication and characterization of PIP based C/SiC composites having improved mechanical properties using high modulus M40J carbon fiber as reinforcement
| Autor: | M. Bablu, Suresh Kumar, N. Eswara Prasad, Manoj K. Mishra, Ashok Ranjan |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Fabrication Materials science Yield (engineering) Process Chemistry and Technology Modulus 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Flexural strength visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Fiber Composite material 0210 nano-technology Pyrolysis |
| Zdroj: | Ceramics International. 43:8153-8162 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2017.03.141 |
| Popis: | PIP based C/SiC composites are fabricated using high modulus M40J carbon fiber. High ceramic yield polycarbosilane (PCS) was also synthesized in the laboratory and the same was used to infiltrate the fibrous preforms. The infiltrated preforms were pyrolyzed at three different temperatures viz. 1400, 1500 and 1600 °C and termed as set-1, set-2 and set-3. Flexural strength was determined using 3-point bend fixture and the data obtained are analyzed using Weibull distribution. Average flexural strengths were found to be 691±23 MPa, 654.6±24 MPa, and 504±31 MPa for the sets 1, 2 and 3 respectively and the corresponding Weibull moduli were found to be 27.9, 25.5 and 15.6. The composites pyrolyzed at 1400 and 1500 °C, have been found to exhibit extensive fiber pull-out and thus demonstrated pseudo-ductile fracture behavior. A relatively brittle fracture was observed for the composites pyrolyzed at 1600 °C. Area under the flexural stress and displacement curve is found to be in the ratio 1.0:0.92:0.8 for the for the sets 1, 2 and 3 respectively. The effect of the pyrolysis temperature on the mechanical properties is discussed in the light of the microstructure of the composites. |
| Databáze: | OpenAIRE |
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