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Al₂O₃/CNT 하이브리드 소재의 마이크로방전가공을 위한 RC 방전과 펄스구동의 효과
탁현석(Hyun-Seok Tak),신승열(Seung-Yul Shin),강명창(Myung-Chang Kang),하창승(Chang-Seung Ha),이호준(Ho-Jun Lee),이대열(Dae-Yeol Lee) 한국생산제조학회 2009 한국공작기계학회 추계학술대회논문집 Vol.2009 No.-
This paper described the effect of RC discharging and pulse generation for micro-EDM of micro-hole fabrication with Al₂O₃/CNTs hybrid nanocomposites. Alumina matrix composites reinforced with CNTs were fabricated by CNT purification, mixing, compaction and sintering processes. Al₂O₃ nanocomposites with different CNT concentrations were successfully synthesized. The mechanical and electrical characteristics of Al₂O₃/CNTs composites were examined in order to evaluate machining characteristics. The pulse driven circuit was newly designed to evaluate the machining property using RC discharge and pulsed generator. Characterization of machined micro holes was conducted by Field Emission Scanning Electron Microscope (FE-SEM) after actual RC Discharged EDM and pulse driven EDM, respectively.