公开(公告)号：US4416709A

公开(公告)日：1983-11-22

申请号：US300921

申请日：1981-09-10

申请人： Kazuo Ohya ,  Hiroki Fujishima ,  Norio Ishijima ,  Hiroyoshi Itoga ,  Yasuhiko Kominami

发明人： Kazuo Ohya ,  Hiroki Fujishima ,  Norio Ishijima ,  Hiroyoshi Itoga ,  Yasuhiko Kominami

IPC分类号： C22C45/02 ,  C22C45/04 ,  G11B5/147 ,  H01F1/153 ,  C22C19/00

CPC分类号： G11B5/147 ,  C22C45/04 ,  H01F1/15316

摘要： The present invention relates to an amorphous magnetic alloy material suited for use as a core material of a magnetic head.When the magnetic head is subjected to a slide contact with a magnetic tape over a long period of time, a film of oxide and the like is formed on the surface of an amorphous magnetic alloy material due to chemically corrosive media frequently contained in the magnetic coating layer of the magnetic tape or due to carbon dioxide, water and the like contained in the air.The amorphous magnetic alloy material of the present invention is highly corrosion resistant due to the combination of chromium and platinum family element(s), and, the inconveniences in a magnetic head, due to chemical wear, can be prevented even where the magnetic head is operated or stored in a considerably severe condition.

摘要翻译： 本发明涉及适合用作磁头的芯材的无定形磁性合金材料。 当磁头经受长时间的磁带滑动接触时，由于磁性涂层中经常包含的化学腐蚀介质，在非晶磁性合金材料的表面上形成氧化物膜等 磁带的层或由于包含在空气中的二氧化碳，水等。 本发明的非晶磁性合金材料由于铬和铂族元素的组合而具有高度的耐腐蚀性，并且即使在磁头是磁头的情况下也可以防止由于化学磨损引起的磁头的不便 在相当严酷的条件下操作或储存。

公开(公告)号：US4188211A

公开(公告)日：1980-02-12

申请号：US876528

申请日：1978-02-09

申请人： Norishige Yamaguchi ,  Kazuo Ohya ,  Osamu Kohmoto ,  Hiroki Fujishima

发明人： Norishige Yamaguchi ,  Kazuo Ohya ,  Osamu Kohmoto ,  Hiroki Fujishima

IPC分类号： C22C45/04 ,  H01F1/153 ,  C22C19/00 ,  C22C19/05

CPC分类号： H01F1/153 ,  C22C45/04

摘要： During investigation of thermal stability of the amorphous magnetic alloys by the Inventors, it was discovered that, due to the application of heat to the alloys, the hysteresis loop of the conventional, amorphous magnetic alloys was shifted in such a manner that the initial permeability of the alloys was decreased. It was also discovered that the initial permeability of the conventional amorphous magnetic alloys was irreversibly changed due to the application of heat to and the withdrawal of heat from the alloys.The present invention is characterized by the discovery of an unexpected relationship between the content of metallic elements and a metalloid element(s) of the amorphous alloy composition, thereby providing novel alloy compositions with thermally stable magnetic properties.The present invention is also characterized by incorporating an additional element or elements into an amorphous magnetic alloy, thereby providing the alloy with thermal stability.

摘要翻译： 在通过发明人研究非晶磁性合金的热稳定性的过程中，发现由于向合金施加热量，传统的非晶磁性合金的磁滞回线以这样的方式移动，使得初始磁导率 合金减少。 还发现常规非晶磁合金的初始磁导率由于向合金施加热量和退出热量而不可逆地改变。 本发明的特征在于发现金属元素的含量与非晶合金组合物的准金属元素之间的意想不到的关系，从而提供具有热稳定磁性的新型合金组成。 本发明的特征还在于将另外的元素结合到非晶磁性合金中，从而为合金提供热稳定性。

公开(公告)号：US4079430A

公开(公告)日：1978-03-14

申请号：US656864

申请日：1976-02-10

申请人： Hiroki Fujishima ,  Kazuo Ohya

发明人： Hiroki Fujishima ,  Kazuo Ohya

IPC分类号： H04R11/08 ,  B32B15/01 ,  G11B5/127 ,  G11B5/147 ,  G11B5/255 ,  H01F1/14 ,  H01F1/153 ,  G11B5/14 ,  G11B5/12

CPC分类号： H01F1/15383 ,  G11B5/127 ,  G11B5/147 ,  H01F1/14

摘要： Amorphous metal alloys are employed in a magnetic head as core materials in the present invention. Such alloys are generally composed of M and Y, wherein M is at least one of Fe, Ni and Co and Y is at least one of P, B, C and Si. The amorphous metal alloys used are marked by a combination of the desirable properties of conventional permalloy with those of conventional ferrites.

摘要翻译： 非磁性金属合金作为本发明的芯材使用在磁头中。 这种合金通常由M和Y组成，其中M是Fe，Ni和Co中的至少一种，Y是P，B，C和Si中的至少一种。 所用的非晶态金属合金通过常规坡莫合金与常规铁素体的理想性能的组合来标记。