Patent ID: 6261515
Filing Date: 2001-07-17
Classification: B22F,C22C,H01F

Abstract:
A method for producing a rare earth-containing magnet having reduced oxygen content, comprising the steps of:(a) isolating magnetic powder from oxygen containing sources, wherein said magnetic powder alloy contains at least one rare earth element, iron and boron, wherein said rare earth element is Nd;(b) molding said magnetic powder alloy in an isolated environment, wherein the relative humidity level within said isolated environment is below 40% and the oxygen content is below 1%;(c) wherein said isolated environment comprises an enclosure, said enclosure including at least two operating portals and an inlet window, means for measuring relative humidity within said enclosure, means for supplying an inert gas into said enclosure, desiccating agents disposed within said enclosure, and desiccating agents in flow communication between said inert gas supply means and said enclosure.