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http://dx.doi.org/10.14775/ksmpe.2014.13.6.119

Machining characteristics on ultrasonic vibration assisted micro-electrical discharge machining of carbon-nanotube reinforced conductive Al2O3 composite  

Kang, Myung-Chang (Graduate School of Convergence Science, Pusan UNIV.)
Tak, Hyun-Seok (Gwangyang Steel Works, POSCO Ltd.)
Lee, Chang-Hoon (Graduate School of Convergence Science, Pusan UNIV.)
Kim, Nam-Kyung (Dept. of Automotive Engineering, Gyungnam National UNIV. of Science and Technology)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.13, no.6, 2014 , pp. 119-126 More about this Journal
Abstract
Micro-holes of conductive ceramic are required in micro structures. Micro-electrical discharge machining (Micro-EDM) is an effective machining method since EDM is as process for shaping hard metals and complex-shaped holes by spark erosion in all kinds of electro-conductive materials. However, as the depth of micro hole increases, the machining condition becomes more unstable due to inefficient removal of debris between the electrode and the workpiece. In this paper, micro-EDM was performed to evaluate machining characteristic such as electrode wear, machining time, taper angle, radial clearance with varying voltage and ultrasonic vibration on 10 vol.% Carbon-nanotube reinforced conductive $Al_2O_3$ composite fabricated by spark plasma sintering in previous research.
Keywords
CNT reinforced Conductive $Al_2O_3$ composite; Micro-EDM; Ultrasonic vibration; Micro-hole; Machining characteristic;
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Times Cited By KSCI : 2  (Citation Analysis)
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