HOT PRESSED PERMANENT MAGNET HAVING HIGH AND LOW COERCIVITY REGIONS

摘要

HOT PRESSED PERMANENT MAGNET HAVING HIGH AND LOW COERCIVITY REGIONS In accordance with a preferred embodiment, an arcuate magnet is formed by selectively hot working a composition including iron, neodymium and/or praseodymium, and boron such that an edge of the arcuate has greater apparent coercivity than a central region and the central region has a higher remanence than the edge.