Paper Title:
Micro-Raman Study on Structure Evolution of Graphite Exposed to Intense Thermal Shock Load
  Abstract

A small area of a fine grain graphite block was exposed to intense thermal shock load at 9.6 GW/m2 and investigated by micro-Raman spectroscopy. Raman spectra of the loaded area show a reduction of the intensity ratio of D and G peaks in comparison with the one of unloaded graphite, indicating the ordering of graphitic structure even for as short as 5 ms. Raman spectra of the surrounding area, on the other hand, exhibited broad features of amorphous carbon, indicating a carbon deposits from the loaded area. The broad spectra showed a strong positional dependence, reflecting the temperature gradient of the block induced by the shock load. Fitting analysis of the Raman spectra clearly shows two linear relationships between the G-peak width (FWHMG) and the peak intensity ratio (ID / IG), corresponding to two steps of ordering process of the amorphous carbon deposits.

  Info
Periodical
Edited by
Ch. Linsmeier and M. Reinelt
Pages
66-70
DOI
10.4028/www.scientific.net/AMR.59.66
Citation
T. Hirai, J. Compan, K. Niwase, "Micro-Raman Study on Structure Evolution of Graphite Exposed to Intense Thermal Shock Load", Advanced Materials Research, Vol. 59, pp. 66-70, 2009
Online since
December 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Konstantin V. Emtsev, Thomas Seyller, Florian Speck, Lothar Ley, P. Stojanov, J.D. Riley, R.C.G. Leckey
Abstract:Graphitization of the 6H-SiC(0001) surface as a function of annealing temperature has been studied by ARPES, high resolution XPS, and LEED....
525
Authors: Min Cong Zhu, En Qiang Wang, Ying Chen Zhang, Deng Xin Li
Abstract:Expanded graphite (EG) was prepared by microwave irradiation at 1000W for 60s. The growth of coupled ZnO/TiO2 nanonods in the...
268
Authors: En Qiang Wang, Min Cong Zhu, Ying Chen Zhang, Deng Xin Li
Abstract:We prepared a composite photocatalyst of Stick TiO2 nanorod loaded on expanded graphite(EG).The growth of TiO2 in the...
278
Authors: Juan Yang, Chuan Liang Zang, Lei Sun, Nan Zhao, Ya Zhou Zhou
Thin Films
Abstract:Large area graphene oxide (GO) film was prepared by vacuum filtration method through a membrane with a pore size of 25 nm, using GO sheets...
2356
Authors: Cherukutty Ramakrishnan Minitha, Ramasamy Thangavelu Rajendrakumar
I. Preparation and Characterization of nanostructured materials
Abstract:Reduced graphene oxide is an excellent candidate for various electronic devices such as high performance gas sensors. In this work Graphene...
56