发明名称 |
MAGNETIC ALLOY AND ITS MANUFACTURE |
摘要 |
PURPOSE:To obtain the magnetic alloy having less dispersion of characteristics and suitable for a magnetic recording medium and a hard magnetic material by almost uniformly distributing ferro-magnetic crystal grains having specified value or below of grain size into a mother phase constituted of a nonferromagnetic amorphous phase. CONSTITUTION:The magnetic alloy is constituted of a micro structure in which ferromagnetic crystal grains having <=1000Angstrom average grain size are almost uniformly distributed into a mother phase constituted of a nonferromagnetic amorphous phase at a room temp. For manufacturing the alloy, an amorphous alloy contg. one or more kinds among Fe, Co and Ni is subjected to heat treatment by a liquisol guenching method or a vapor quenching method to form a micro structure in which ferromagnetic crystal grains having <=1000Angstrom average grain size are almost uniformly distributed into a mother phase constituted of a nonferromagnetic amorphous phase. |
申请公布号 |
JPH0364434(A) |
申请公布日期 |
1991.03.19 |
申请号 |
JP19890200943 |
申请日期 |
1989.08.02 |
申请人 |
HITACHI METALS LTD |
发明人 |
YOSHIZAWA KATSUTO;YAMAUCHI KIYOTAKA |
分类号 |
C21D6/00;C22C45/02;C22C45/04;C22F1/00;G11B5/64;G11B5/65;G11B5/66;H01F1/04;H01F10/14;H01F41/14 |
主分类号 |
C21D6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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