Preparation and characterization of carbon felt/carbon composites by chemical vapor infiltration process
* 본 문서는 배포용으로 복사 및 편집이 불가합니다.
서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 32권 / 1호
ㆍ저자명 : Hossein Elahi Davaji, Fatemeh Shamoradi, Masoud Panjepour, Mehdi Ahmadian
ㆍ저자명 : Hossein Elahi Davaji, Fatemeh Shamoradi, Masoud Panjepour, Mehdi Ahmadian
목차
Abstract1 Introduction
2 Materials and experimental methods
2.1 Materials
2.2 Experiment procedure
3 Results and discussion
3.1 Investigation of microstructure and physical properties
3.2 Phase and chemical analyses
3.3 Mechanical properties
4 Conclusion
References
영어 초록
The current study was intended to synthesize and characterize the physical, chemical, and mechanical properties of carbon/ carbon (C/C) composites using the chemical vapor infiltration (CVI) process. To that end, carbon fiber felt (CF) was used as a preform, and methane and hydrogen were employed as reactive and carrier gases, respectively. After deciding on the optimum temperature (1050 °C), the composite samples were produced at different times (0–195 h). Then the samples were studied for their phase and microstructure characteristics using XRD, SEM, FESEM, FTIR, and Raman spectroscope. The results showed that by increasing the CVI process time up to 195 h, the density of the produced samples increased from 0.20 to 1.62 g/cm3, and the specific surface area decreased from 58.78 to 0.23 m2/ g. Also, by increasing the process duration, the deposition rate decreased due to the reduction of the available surface for carbon deposition. In other words, due to the increase in density, and decrease in both porosity and specific surface area, the thermal conductivity coefficient and the bending strength of the samples increased. The composite specimens’ SEM images of the fracture surface indicated a weak interface between the carbon fibers and the carbon layer developed by the CVI process. The structural analyses showed that the morphology of carbon growth during the CVI process was initially laminar, but changed to rough-laminar (RL) with the higher duration of the CVI process.참고 자료
없음"Carbon letters"의 다른 논문
- Improving wettability and adhesion of carbon cloth with..9페이지
- Carbon‑coated SiOx anode materials via PVD and pyrolyze..8페이지
- Replacement effect of fresh electrolyte on the accelera..7페이지
- Gamma‑ray irradiated graphene nanosheets/polydopamine h..8페이지
- Measuring electrical resistances of ACF sensors by CO2 ..10페이지
- Mesoporous carbon microspheres fabricated from KOH acti..10페이지
- Preparation and capacitive property of graphene oxide c..11페이지
- Preparation of cathode slurry for lithium‑ion battery b..8페이지
- Hierarchically porous carbon derived from tobacco waste..13페이지
- Microporous‑activated carbons of type I adsorption isot..21페이지