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김남훈(Nam-Hun Kim),김남경(Nam-Kyung Kim),김경균(Kyong-Gun Kim) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
Nitrogen ions were implanted into an aluminum alloy (Al5202) for casting mold materials by ion implantation to enhance hardness and surface roughness of the target. A high-voltage pulse of 80 keV with a current density of 14 ㎂/㎠ and various irradiation conditions were applied to the target immersed in the nitrogen ion. The hardness test by vickers hardness method showed that nitrogen ion implantation resulted in a increment of value from 69.44 to 76.28. It was also found that ion implantation enhances the surface properties of aluminum alloy.
강혁진(Hyuk-Jin Kangㅠ),안성훈(Sung-Hoon Ahn),이재상(Jae-Sang Lee),김경균(Kyung-Gun Kim) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
The research on surface modification technology has been advanced to improve the properties of engineering materials. Ion implantation is a novel surface modification technology to enhance the mechanical, chemical and electrical properties of substrate’s surface using accelerated ions. In this research, nitrogen ions were implanted into aluminum substrates which would be used for mold of rubber materials. The composition of nitrogen ion implanted aluminum alloy and nitrogen ion distribution profile were analyzed by Auger Electron Spectroscopy (AES). To analyze the modified surface, properties such as hardness, friction coefficient, wear resistance, contact angle, and surface roughness were measured. Hardness of ion implanted specimens was higher than that of untreated specimens. Friction coefficient was reduced, and wear resistance was improved. From the experimental results, it can be expected that ion implantation of nitrogen enhances the surface properties of aluminum mold.