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Korean Journal of Materials Research, Vol.11, No.10, 907-911, October, 2001
자성연마용 Fe-WC복합지립의 조직특성
Characteristics of Fe-WC composite powders for Magnetic Abrasive
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In order to improve the grindability of magnetic abrasive, Fe-WC magnetic abrasives were made by a plasma melting method after ball milling at various times. This study aims to investigate homogeneously distributed hard phases in Fe matrix and strong bonding between the Fe-matrix and the hard phase. According to XRD, SEM and OM observation, Fe-WC magnetic abrasive powders exhibit the best grindability by plasma melting for 30h ball milling. As a result of magnetic abrasive polishing, the surface roughness, R_{max}5.0 \mu\textrm{m},beforemagneticabrasivepolishing,wasreducedtoR max 2.4 μm . The new magnetic abrasive polishing process is thought to be the useful methods for the automation of three dimensional surface polishing.
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