SEMINAR

Microstructure and Properties of Carbon-Carbon Composites

Speaker:

Prof. Lalit Mohan Manocha

Department of Materials Science, Sardar Patel University

Vallabh Vidyanagar, INDIA

时间：2010 年 4 月 19 日（星期一）下午 3:00

地点：2号楼607会议室

联系人：董绍明研究员

 曾宇平研究员

张国军研究员

欢迎广大科研人员和研究生参与讨论！

Abstract:

Carbon/carbon composites for thermal management systems need materials to have high thermal conductivity, low coefficient of thermal expansion and good mechanical strength. Thermal properties are comparatively very structure sensitive and the heat transfer mechanism is governed by atomic level structure in the composites. The effective heat transfer mechanism requires highly oriented graphitic phases within the fiber and matrix. Carbon/carbon composites have been developed with different fiber/matrix combinations along with milled fibers and heat-treated to different temperatures under pressure. Microstructure of these composites has been evaluated using polarized optical microscopy, Scanning electron microscopy and X-ray diffractometry. Thermal properties such as thermal conductivity, coefficient of thermal expansion and specific heat have been evaluated and correlated with the microstructure of carbon/carbon composites. It has been found that transmission of thermal energy is influenced by amount of heat absorbed i.e. specific heat by the composites at that particular temperature. It reduces magnitude of thermal diffusion in the composites. The milled fibers are found to be disturbing the matrix structure and thereby reducing the specific heat and thermal conductivity of the composites. The temperature dependence of thermal diffusion, specific heat, thermal conductivity and coefficient of thermal expansion has been studied and correlated with microstructure of carbon/carbon composites. Details of the microstructural observations and the results on thermal properties of these composites will be presented.

Areas of Research :

　Research & Development of Carbon Materials, especially

• R&D of Carbon fibers and carbon-carbon composites for strategic and Industrial applications; Processing, Structure, properties relationship
• Development of carbon nanomaterials, Porous carbons and carbon nanocomposites for structural and thermal applications
• Research and Development of carbon based ceramics and composites
• Research and Development of high temperature ceramics and ceramic matrix composites

Award/Prizes/Honours received:

(i) Elected Fellow of National Academy of Science of India, 2004

(ii) Dr. Vikram Sarabhai Award for R&D related to Industry (Government of Gujarat), 2002-03

(iii) KK-IIM Award ( by IIM-Baroda) for Excellent achievements in R&D in Carbon Materials 2002

(iv) B.D.Bengur Award (Indian Carbon Society) 2001 for Life time achievements on R&D of Carbon Materials

(v) Hariom Asharam Prerit Inter University Best Paper Award in Materials Science 2001

(vi) Best Paper Award, MRSI 2000

(vii)Hariom Asharam Prerit Inter University Best Paper Award in Materials Science1998

(viii)Homi J Bhabha Award for Applied Sciences (UGC) 1995

(ix)MRSI Medal 1995 by Materials Research Society of India, Feb.　1995

(x)CSIR Technology Prize for 1990 by Council of Scientific & Industrial Research

(xi)N.P.L. Award 1977 for R&D in the area of carbon fibers

(xii)Alexander von Humboldt Award, Germany 1977-78

(xiii) JSPS Invitation Fellowship, TIT, Tokyo Japan 1985

(xiv)UNIDO consultant for carbon/carbon composites to Department of Chemical Engineering, Chungnam National University, Taejon, S.Korea 1991-92.

(xv)Elected member of Asia Pacific Academy of Materials (APAM)

(xvi) Fellow, Gujarat Science Academy

(xvii)Visiting Professor, Tokyo Institute of Technology, Japan

(xviii)Nominated as Co-Editor-in-chief of the International journal “Carbon Science”

(xix) Member, International Collaboration Research Team, Tokyo Institute of Technology, Japan

(xx) Vice President, Indian Carbon society

(xxi) Member, Executive council, Indian Ceramic Society