Permanent magnet alloy

Abstract

Abstract PURPOSE:To obtain permanent magnet alloy inexpensive and suppliable bulkily, by combining specified ratios of rare earth elements composed of specified quantities of Pr, Ce, Nd and Fe, B and processing said mixture to sintered body. CONSTITUTION:A material metal exhibited by a formula RXFeYBZ in which R is rare earth elements composed of 5-15wt% Pr, >=40wt%-60wt% (contg. 60wt%) range Ce and the balance Nd, X; 11.5-20.0atomic%, Z; 5.5-12.0atomic %, Y; the balance, is melted at about 1500 deg.C, and cast to prepare an alloy ingot. The ingot is crushed, then the powder is press molded in about 10KOe magnetic field, and said body is sintered at about 1000-1100 deg.C for about 1hr. In this way, permanent magnet alloy being magnetically anisotropic sintered body having large max. energy product is obtd.

Inventors

• 👤 Tsutomu Okada
• 👤 力 岡田
• 👤 Kazuhiro Yamamoto
• 👤 和弘 山本

Bibliographic Details