METHOD OF MAKING PERMANENT MAGNET OF MN-AL-C ALLOY

摘要

A manganese-aiuminium-carbon alloy magnet is produced by subjecting a polycrystalline Mn-Al-C alloy magnet having a specified direction to easy magnetization to compressive working in that direction at a temperature of 550 to 780 DEG C. The degree of compressive working is equivalent to a logarithmic strain of The resulting magnet is magnetically anisotropic in thre-imensional terms, but is magnetically isotropic in two-dimensional terms (in planes including the specified direction).