| 摘要 |
PURPOSE:To attain the attraction force higher than the attraction force of an opened magnetic path without requiring a yoke by forming a platinum mag net consisting of a specific compsn. to a U shape of a specific width, depth and weight. CONSTITUTION:A magnet alloy consisting of 33 to 47 atomic % platinum and the balance iron, more preferably 37.5 to 42.0 atomic % platinum and the balance iron or a magnet alloy contg. 33 to 47 atomic % platinum, 0.1 to 10 atomic % one or >=2 kinds among Ti, Mo, Nb, Ta, W, Cr, and V, and the balance iron has exceedingly outstanding precision free universal workability and can, therefore, be made into a very small U shape. The material consisting of this compsn. is, thereupon, made into a microminiature magnet which has the U shape having a gap of 0.005 to 1.0mm width and 0.05 to 2.0mm depth and has 0.05 to 1g weight per piece of the magnets. Such magnet is used as the attraction magnet. |
