• Proceedings of the Korean Powder Metallurgy Institute Conference
• /
• 1998.04b
• /
• pp.28-28
• /
• 1998

• Proceedings of the Korean Powder Metallurgy Institute Conference
• /
• 2004.04a
• /
• pp.14-15
• /
• 2004

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1992.05a
• /
• pp.120-120
• /
• 1992

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1995.11a
• /
• pp.119-119
• /
• 1995

• Proceedings of the Korean Institute of Surface Engineering Conference
• /
• 2015.11a
• /
• pp.323-323
• /
• 2015

• Proceedings of the Korean Society for Technology of Plasticity Conference
• /
• 2007.10a
• /
• pp.189-189
• /
• 2007

• Proceedings of the Korean Ceranic Society Conference
• /
• 2002.10a
• /
• pp.103.1-103
• /
• 2002

• Journal of the Korean institute of surface engineering
• /
• v.19 no.1
• /
• pp.20-29
• /
• 1986

이 보고서는 재료의 표면처리에 레이저의 역할이 증가하고 있음을 설명하고 생산현장과 실험실환경에서의 그것의 금속학적인 응용을 조사한다. 변태경화, 표면합금화와 크래딩에 특히 관심을 두었으나, 아직 개발단계에 있는 표면용융, 입자분사와 증착과 같은 기술에 관해서도 언급한다.

• Korean Journal of Materials Research
• /
• v.8 no.7
• /
• pp.641-647
• /
• 1998

The machinability properties of P/M 2011 AI alloys extruded rapidly solidified by rotating disc atomization were investigated in this study. The Pb-Bi particles were very uniformly and finely dispersed in the P/M 2011 AI alloys extruded rapidly solidified. According to the increase of cutting speed, the short discontinuous chips were produceed and continuous chips were formed from the lower feed values of O.lmm/rev. The surface roughness is depend on the feed values, not cutting depth and cutting speed. The short discontinuous chips were formed due to dispersed $AI_20_3$ particles and Pb- Bi inclusion.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.10
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• pp.34-41
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• 2004

A new method to fabricate the fine magnetic abrasives by using mechanical alloying is proposed. The mechanical alloying process is a solid powder process where the powder particles are subjected to high energetic impact by the balls in a vial. As the powder particles in the vial are continuously impacted by the balls, cold welding between particles and fracturing of the particles take place repeatedly during the ball milling process using a planetary mill. After the manufacturing process, fine magnetic abrasives which the guest abrasive particles c lung to the base metal matrix without bonding material can be obtained. The shape of the newly fabricated fine magnetic abrasives was investigated using SEM and its polishing performance was verified by experiment. It is very helpful to finishing the injection mold steel in final polishing stage. The areal ms surface roughness of the workpiece after several polishing processes has decreased to a few nanometer scales.