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Laser micromachining of CNT/Fe/Al2O3 nanocomposites
- Authors
- Kim, Kwang-Ryul; Choi, Byoung-Deog; Yi, Jun-Sin; Cho, Sung-Hak; Choa, Yong-Ho; Shin, Dong-Soo; Bae, Dong-Ho; Kang, Myung-Chang; Jeong, Young-Keun
- Issue Date
- Sep-2009
- Publisher
- Nonferrous Metals Society of China/Zhongguo Youse Jinshu Xuehui
- Keywords
- nanocomposite; femto-second laser; micromachining; carbon nanotubes
- Citation
- Transactions of Nonferrous Metals Society of China (English Edition), v.19, no.supplement, pp.S189 - S193
- Indexed
- SCIE
SCOPUS
- Volume
- 19
- Number
- supplement
- Start Page
- S189
- End Page
- S193
- ISSN
- 1003-6326
- 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 fermto-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.
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Related Researcher
- CHOA, YONG HO
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)