| abstract |
Disclosed are a permanent magnet and a manufacturing method for the permanent magnet in which gaps are not formed between the main phase and the grain-boundary phase of the magnet after sintering, and in which the entire magnet can be densely sintered. An organometallic compound solution, to which an organometallic compound represented by the formula M-(OR) x has been added, is added to a fine powder of a pulverized neodymium magnet, and the organometallic compound is uniformly deposited on the surface of the neodymium magnet grains. Afterwards, calcination in hydrogen is carried out by retaining a molded article, formed by powder compacting, in a hydrogen atmosphere for several hours at 200℃-900℃. Afterwards, a permanent magnet is manufactured by sintering. (In the formula, M is Dy or Tb, R is a substituent group comprising a hydrocarbon, and can be a straight chain or a branched chain. x is an arbitrary integer.) |