Fabrication of the fine magnetic abrasives by using mechanical alloying process and its polishing characteristics

Sung Jun Park, Sang Jo Lee

Research output: Contribution to journalArticle

Abstract

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 clung 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 micro structures such as injection mold and MEMS applications in final polishing stage. The areal rms surface roughness of the workpiece after several polishing processes has decreased to a few nanometer scales.

Original languageEnglish
Pages (from-to)421-424
Number of pages4
JournalKey Engineering Materials
Volume326-328 I
Publication statusPublished - 2006 Dec 6

Fingerprint

Mechanical alloying
Polishing
Abrasives
Powders
Fabrication
Cold welding
Ball milling
MEMS
Surface roughness
Metals
Microstructure
Scanning electron microscopy
Experiments

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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Fabrication of the fine magnetic abrasives by using mechanical alloying process and its polishing characteristics. / Park, Sung Jun; Lee, Sang Jo.

In: Key Engineering Materials, Vol. 326-328 I, 06.12.2006, p. 421-424.

Research output: Contribution to journalArticle

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