您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 1    September 2009

[PDF Download]    [Flash Online]

    

Laser micromachining of CNT/Fe/Al2O3 nanocomposites
Kwang-Ryul KIM1, Byoung-Deog CHOI1, Jun-Sin YI1, Sung-Hak CHO2, Yong-Ho CHOA3,
Dong-Soo SHIN4, Dong-Ho BAE5, Myung-

1. School of Information and Communication Engineering, Sungkyunkwan University, Suwon, 440-746, Korea;
2. Korea Institute of Machinery and Materials, Daejeon, 305-343, Korea;
3. Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Korea;
4. NANOBASE Inc., B505 Woolim Lions Valley, Seoul, 153-786, Korea;
5. School of Mechanical Engineering, Sungkyunkwan University, Suwon, 440-746, Korea;
6. National Core Research Center for Hybrid Materials Solution, Pusan National University, Busan, 609-735, Korea

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.

 

Key words: nanocomposite; femto-second laser; micromachining; carbon nanotubes

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn