アーク放電を用いた固体金属の電磁粉霧

抄録

An electromagnetic atomization process for solid metals is newly proposed. The electromagnetic force induced by a direct electric current and a static magnetic field is utilized to splash metals melted by arc discharge.
Tungsten was used as an unconsumable cathode to atomize titanium as the anode. It was found that the imposed magnetic flux density and the current had lower limits in atomizing the solid metal in a stable condition. It was also found from observations by a high speed video set that particles were splashed not continuously but intermittently. The effects of current and imposed magnetic flux density on particle size distribution were studied. The mean particle diameter decreased with increasing the imposed magnetic flux density (B) in proportion to B^-0.46, but on the other hand scarcely depended on the imposed current.