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VACUUM TREATMENT DEVICE 发明授权

2023-03-20 2430 764K 0

专利信息

申请日期 2025-07-12 申请号 RU2010125813
公开(公告)号 RU2447189C2 公开(公告)日 2012-04-10
公开国别 RU 申请人省市代码 全国
申请人 ULVAK INK
简介 FIELD : machine building. SUBSTANCE : device comprises a working chamber capable of vacuumising, a heating facility for the working chamber, a retention facility for an evaporated metal material in the form of a volume element and a treated item inside the working chamber. At the same time the heating facility is operated under lower pressure in the working chamber, and the working chamber is heated to the temperature, at which at least the evaporated metal material evaporates, creating the atmosphere of metal vapours inside the working chamber, so that the metal atoms in the atmosphere of the metal vapours engage with the surface of the heated treated item. At the same time the evaporated metal material comprises at least one of Dy and Tb, and the treated item is a sintered magnet based on iron-boron-rare-earth elements, having the specified shape. Besides, the temperature during heating of the sintered magnet may be controlled so that the metal atoms engaged with the surface of the magnet may diffuse into the border of crystalline grains. EFFECT : magnet manufacturing efficiency improvement. 7 cl, 12 dwg


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