Laser micromachining of CNT/Fe/Al2O3 nanocomposites

Kwang Ryul Kim; Byoung Deog Choi; Jun Sin Yi; Sung Hak Cho; Yong Ho Choa; Dong Soo Shin; Dong Ho Bae; Myung Chang Kang; Young Keun Jeong

doi:10.1016/S1003-6326(10)60269-5

Laser micromachining of CNT/Fe/Al₂O₃ nanocomposites

Kwang Ryul Kim
, Byoung Deog Choi
, Jun Sin Yi
, Sung Hak Cho
, Yong Ho Choa
, Dong Soo Shin
, Dong Ho Bae
, Myung Chang Kang
, Young Keun Jeong

Department of Electronic and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

CNT/Fe/Al₂O₃ mixed powders were synthesized from Fe/Al₂O₃ nanopowders using thermal CVD for the homogeneous dispersion of carbon nanotubes CNTs. CNTs consisted of MWNT, and the diameter was approximately 20-30 nm. After sintering, CNTs were homogenously located throughout Al₂O₃ grain boundary and were buckled. A femto-second laser installed with special optical systems was used for micromachining of the nanocomposites. The relationship between material ablation rate and energy fluence was theoretically investigated and compared with experimental results from cross-sectional SEM analysis. The nanocomposites which have higher content of CNT show a fairly good machining result due to its higher thermal conductivity and smaller grain size as well as lower light transmittance.

Original language	English
Pages (from-to)	s189-s193
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	19
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/S1003-6326(10)60269-5
State	Published - Sep 2009

Keywords

Carbon nanotubes
Femto-second laser
Micromachining
Nanocomposite

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/S1003-6326(10)60269-5

Cite this

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title = "Laser micromachining of CNT/Fe/Al2O3 nanocomposites",

abstract = "CNT/Fe/Al2O3 mixed powders were synthesized from Fe/Al2O3 nanopowders using thermal CVD for the homogeneous dispersion of carbon nanotubes CNTs. CNTs consisted of MWNT, and the diameter was approximately 20-30 nm. After sintering, CNTs were homogenously located throughout Al2O3 grain boundary and were buckled. A femto-second laser installed with special optical systems was used for micromachining of the nanocomposites. The relationship between material ablation rate and energy fluence was theoretically investigated and compared with experimental results from cross-sectional SEM analysis. The nanocomposites which have higher content of CNT show a fairly good machining result due to its higher thermal conductivity and smaller grain size as well as lower light transmittance.",

keywords = "Carbon nanotubes, Femto-second laser, Micromachining, Nanocomposite",

author = "Kim, \{Kwang Ryul\} and Choi, \{Byoung Deog\} and Yi, \{Jun Sin\} and Cho, \{Sung Hak\} and Choa, \{Yong Ho\} and Shin, \{Dong Soo\} and Bae, \{Dong Ho\} and Kang, \{Myung Chang\} and Jeong, \{Young Keun\}",

year = "2009",

month = sep,

doi = "10.1016/S1003-6326(10)60269-5",

language = "English",

volume = "19",

pages = "s189--s193",

journal = "Transactions of Nonferrous Metals Society of China (English Edition)",

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publisher = "Nonferrous Metals Society of China",

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TY - JOUR

T1 - Laser micromachining of CNT/Fe/Al2O3 nanocomposites

AU - Kim, Kwang Ryul

AU - Choi, Byoung Deog

AU - Yi, Jun Sin

AU - Cho, Sung Hak

AU - Choa, Yong Ho

AU - Shin, Dong Soo

AU - Bae, Dong Ho

AU - Kang, Myung Chang

AU - Jeong, Young Keun

PY - 2009/9

Y1 - 2009/9

N2 - CNT/Fe/Al2O3 mixed powders were synthesized from Fe/Al2O3 nanopowders using thermal CVD for the homogeneous dispersion of carbon nanotubes CNTs. CNTs consisted of MWNT, and the diameter was approximately 20-30 nm. After sintering, CNTs were homogenously located throughout Al2O3 grain boundary and were buckled. A femto-second laser installed with special optical systems was used for micromachining of the nanocomposites. The relationship between material ablation rate and energy fluence was theoretically investigated and compared with experimental results from cross-sectional SEM analysis. The nanocomposites which have higher content of CNT show a fairly good machining result due to its higher thermal conductivity and smaller grain size as well as lower light transmittance.

AB - CNT/Fe/Al2O3 mixed powders were synthesized from Fe/Al2O3 nanopowders using thermal CVD for the homogeneous dispersion of carbon nanotubes CNTs. CNTs consisted of MWNT, and the diameter was approximately 20-30 nm. After sintering, CNTs were homogenously located throughout Al2O3 grain boundary and were buckled. A femto-second laser installed with special optical systems was used for micromachining of the nanocomposites. The relationship between material ablation rate and energy fluence was theoretically investigated and compared with experimental results from cross-sectional SEM analysis. The nanocomposites which have higher content of CNT show a fairly good machining result due to its higher thermal conductivity and smaller grain size as well as lower light transmittance.

KW - Carbon nanotubes

KW - Femto-second laser

KW - Micromachining

KW - Nanocomposite

UR - https://www.scopus.com/pages/publications/77955694197

U2 - 10.1016/S1003-6326(10)60269-5

DO - 10.1016/S1003-6326(10)60269-5

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AN - SCOPUS:77955694197

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JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

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