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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 동향자료
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 25 - 31 (7page)
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초록· 키워드
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A microstructure analysis is carried out to optimize the process parameters of a randomly oriented discrete length hybrid carbon fiber reinforced carbon matrix composite. The composite is fabricated by moulding of a slurry into a preform, followed by hot-pressing and carbonization. Heating rates of 0.1, 0.2, 0.3, 0.5, 1, and $3.3^{\circ}C/min$ and pressures of 5, 10, 15, and 20 MPa are applied during hot-pressing. Matrix precursor to reinforcement weight ratios of 70:30, 50:50, and 30:70 are also considered. A microstructure analysis of the carbon/carbon compacts is performed for each variant. Higher heating rates give bloated compacts whereas low heating rates give bloating-free, fine microstructure compacts. The compacts fabricated at higher pressure have displayed side oozing of molten pitch and discrete length carbon fibers. The microstructure of the compacts fabricated at low pressure shows a lack of densification. The compacts with low matrix precursor to reinforcement weight ratios have insufficient bonding agent to bind the reinforcement whereas the higher matrix precursor to reinforcement weight ratio results in a plaster-like structure. Based on the microstructure analysis, a heating rate of $0.2^{\circ}C/min$, pressure of 15 MPa, and a matrix precursor to reinforcement ratio of 50:50 are found to be optimum w.r.t attaining bloating-free densification and processing time.
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참고문헌 (18)
참고문헌 신청
Xiong X / 2006 / Friction behaviors of carbon/carbon composites with different pyrolytic carbon textures / Carbon 44:463
Wang Q / 2012 / A review on application of carbonaceous materials and carbon matrix composites for heat exchangers and heat sinks / Int J Refrig 35:7
Gandikota V / 2010 / Thermal performance of a carbon fiber composite material heat sink in an FC-72 thermosyphon / Exp Therm Fluid Sci 34:554
Luo R / 2002 / Friction performance of C/C composites prepared using rapid directional diffused chemical vapor infiltration processes / Carbon 40:1279
Kasem H / 2009 / Tri bological, physicochemical and thermal study of the abrupt friction transition during carbon/carbon composite friction / Wear 267:846
Wang Q / 2012 / A review on application of carbonaceous materials and carbon matrix composites for heat exchangers and heat sinks / Int J Refrig 35:7
Gandikota V / 2010 / Thermal performance of a carbon fiber composite material heat sink in an FC-72 thermosyphon / Exp Therm Fluid Sci 34:554
Luo R / 2002 / Friction performance of C/C composites prepared using rapid directional diffused chemical vapor infiltration processes / Carbon 40:1279
Kasem H / 2009 / Tri bological, physicochemical and thermal study of the abrupt friction transition during carbon/carbon composite friction / Wear 267:846
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