전기방전에 의한 Ti rod의 열처리 및 표면개질 특성에 관한 연구

변창섭; 오낙현; 안영배; 천연욱; 김영훈; 조유정; 이충민; 이원희; C.S. Byun; N.H. Oh; Y.B. An; Y.W. Cheon; Y.H. Kim; Y.J. Cho; C.M. Lee; W.H. Lee

Korean Journal of Materials Research, Vol.16, No.3, 168-172, March, 2006

DOI10.3740/MRSK.2006.16.3.168 Export Citation

전기방전에 의한 Ti rod의 열처리 및 표면개질 특성에 관한 연구

Surface Modification and Heat Treatment of Ti Rod by Electro Discharge

변창섭, 오낙현¹, 안영배¹, 천연욱¹, 김영훈¹, 조유정¹, 이충민¹, 이원희^{1, †}

한밭대학교 공과대학 재료공학과
¹세종대학교 공과대학 신소재공학과

C.S. Byun, N.H. Oh¹, Y.B. An¹, Y.W. Cheon¹, Y.H. Kim¹, Y.J. Cho¹, C.M. Lee¹, and W.H. Lee^{1, †}

Department of Materials Engineering, Hanbat National University, Taejon 330-717, Korea
¹Department of Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea

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Single pulse of 2.0 to 3.5 kJ from [Math Processing Error] capacitor was applied to the cp Ti rod for its surface modification and heat treatment. Under the conditions of using 2.0 and 2.5 kJ of input energy, no phase transformation has been occurred. However, the hardness and tensile strength decreased and the elongation increased after a discharge due to a slight grain growth. By using more than 3.0 kJ of input energy, the electro discharge made a phase transformation and the hardness at the edge of the cross section increased significantly. The Ti rod before a discharge was lightly oxidized and was primarily in the form of [Math Processing Error] . However, the surface of the Ti rod has been instantaneously modified by a discharge into the main form of TiN from [Math Processing Error] . Therefore, the electro discharge can modify its surface chemistry in times as short as [Math Processing Error] by manipulating the input energy, capacitance, and discharging environment.

Keywords:Ti;electro discharge;heat treatment;surface modification;XPS

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[4] Rolinski E, Mat. Sci. Eng. A, 108, 37 (1989)

[5] Muraleedharan T, Meletis E, Thin Solid Films, 221, 104 (1992)

[6] Raveh A, Avni R, Thin Solid Films, 186, 241 (1990)

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