کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1579401 | 1514825 | 2010 | 5 صفحه PDF | دانلود رایگان |
A novel carbon foam with high strength was produced from mixtures of short carbon fibers and Mitsubishi naphthalene-based mesophase pitch. These mixtures subsequently underwent foaming, carbonization and graphitization. Investigations were carried out to determine the effect on the structure and properties of the carbon foam through the addition of fibers to carbon foam. The results have shown that compressive strength increased linearly with fiber fraction, but decreased at higher fiber fractions. Thermal conductivity increased at lower fiber fraction, but dropped with more fibers addition to carbon foam. The predominant strengthening mechanism was attributed to the pulling-out effect based on the fiber–matrix interface.
Figure optionsDownload as PowerPoint slideResearch highlightsThe short carbon fibers affect the pore size and micro-cracks. ▶ They shoulder the stress and consume much fracture energy. ▶ The thermal conductivity of carbon foam is increased obviously. ▶ The strengthening mechanism is the pulling-out effect.
Journal: Materials Science and Engineering: A - Volume 527, Issues 27–28, 25 October 2010, Pages 7274–7278