NEWS   For NanoCentury



  • >
  •    NEWS   
  • >
  • Seminar
조회 수 6930 댓글 0
Extra Form

Interactions between Carbon Nanotubes and Nickel


Speaker : Prof. Raj Banerjee

Date &Time : 2009. 6. 24 (Wed), 14:00

Place : 신소재공학과 #2427강의실




Interactions between Carbon Nanotubes and Nickel


   In recent years there has been a substantial amount of research interest on metal-matrices reinforced with carbon nanotubes. The primary focus of our studies in this area has been the interaction between these nanotubes and the metal. Towards this end, we have been investigating two types of systems; bulk composites based on multi-walled carbon nanotubes (MWCNT) dispersed in a nickel matrix, processed using the laser-engineered net shape (LENS) processing technique, and, vertically-aligned carbon nanotubes coated with vapor deposited nickel.

  The advantage of using LENS is that that while using a powder feedstock, the composites are processed via a liquid metal route involving rapid solidification. The present study focuses on two aspects, the survivability of nanotubes during melt processing using LENS in a liquid nickel matrix, and the structure and chemistry of the interface between the nanotubes and metal matrix. Furthermore, the stability of MWCNT versus graphite powders in liquid nickel have been compared by processing both types of composites under identical conditions. These composites have been characterized in detail using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and, micro-Raman spectroscopy.

  The microhardness and the wear resistance of the MWCNT reinforced composites have also been studied and these results will also be presented. The second part of this presentation will focus on vertically-aligned carbon nanotubes coated with sputter-deposited nickel. In this case the nanotubes act as templates for the nucleation and growth of nickel nanocrystals. The stabilization of a metastable hexagonal nickel-carbon phase in the nanocrystals will be discussed based on results of TEM and 3D atom probe studies.

List of Articles
번호 제목 날짜
41 KINC Seminar: Prof. Rodney S. Ruoff (The Univ. of Texas at Austin) 2010.05.17
40 KINC Seminar: Prof. Ryan C. Hayward (Univ. of Massachusetts, Amherst) 2010.05.17
39 KINC Seminar: Dr. Tae Hoon Kim (Micron Technology) 2010.05.07
38 KINC Seminar: Prof. Peter Nordlander (Rice Univ.) 2010.03.29
37 KINC Seminar: Dr. Seung Hyun Kang (KCC) 2010.03.29
36 KINC Seminar: Prof. Je Deok Kim (NIMS) 2010.02.05
35 KINC Seminar: Prof. Younan Xia (Washington Univ. at St. Louis) 2009.11.26
34 KINC Seminar: Dr. Won Hyuk Suh (Univ. of California, Berkeley) 2009.10.23
33 KINC Seminar: Prof. Ralph G. Nuzzo (University of Illinois Urbana Champaign) 2009.09.22
32 KINC Seminar: Prof. Rod Ruoff (The Univ. of Texas at Austin) file 2009.08.12
31 KI Symposium: Prof. Matthew Tirrell (UC, Berkely) file 2009.08.11
» Seminar 안내-Prof. Raj Banerjee, 09.6.24 2009.06.15
29 Seminar 안내-Prof. Michiya Matsusaki, 09.6.16 2009.06.10
28 Seminar 안내-Mamadou S. Diallo, Ph.D., 09.6.3 2009.05.25
27 Seminar 안내-H. Grabert (FRIAS) & J. G. Korvink (FRIAS & IMTEK), 09.5.25 2009.05.18
26 Seminar 안내-Prof. Yuanbo Zhang (UC Berkeley), 09.3.31 2009.03.31
25 Seminar 안내-홍병희 박사(성균관대), 09.3.24 2009.03.23
24 Seminar안내-박지용 박사 (아주대), 09.04.2 2009.03.23
23 [KINC Seminar] 나노융합산업 발전전략- 박기영 박사 (지식경제부 바이오나노과장) 2009.02.26
22 Seminar안내-김필립박사(Columbia Univ.), 08.12.10(수) 15시 2008.11.26
Board Pagination Prev 1 2 3 4 5 6 Next
/ 6