公开(公告)号：JPS61224140A

公开(公告)日：1986-10-04

申请号：JP6596085

申请日：1985-03-29

Applicant: SONY CORP

Inventor： HOTAI KAZUHIDE ,  OKUBO KENICHI ,  OZAWA KAZUNORI ,  OHASHI MITSUO

IPC: G11B5/66 ,  G11B5/64 ,  G11B5/72 ,  G11B5/73 ,  G11B5/738 ,  G11B5/84 ,  G11B5/85

Abstract: PURPOSE:To form a carbon protective film having highly uniform film thickness and high strength by forming a metallic magnetic thin film on a substrate and then vapor-depositing a carbon protective film on the metallic magnetic thin film with use of an accelerated electron having >=5KeV energy. CONSTITUTION:The continuous film of a ferromagnetic metal is provided on a disc substrate as the magnetic layer and a carbon protective film is formed on the metallic magnetic film by vacuum deposition using electron-beam heating. An accelerated electron having >=5KeV is used as the electron beam in the vapor deposition. When the energy of the accelerate electron is too low, the ionization rate of the carbon is reduced and the bond strength of the obtained carbon protective film is also decreased. Besides, the energy of the accelerated electron is closely related to the vaporization rate of carbon. Especially, when the vaporization rate is designated as R and the pressure in vaporization as P, more uniform film is formed as the P/R value decreases.

公开(公告)号：JPS5921004A

公开(公告)日：1984-02-02

申请号：JP13093582

申请日：1982-07-27

Applicant: Sony Corp

Inventor： HAYASHI KAZUHIKO ,  ASO KOUICHI ,  KAMIHIRA AKIRA ,  OCHIAI YOSHITAKA ,  HAYAKAWA MASATOSHI ,  MATSUDA HIDEKI ,  HOTAI KAZUHIDE

IPC: C22C45/04 ,  G11B5/127 ,  G11B5/147 ,  G11B5/255 ,  H01F1/153

CPC classification number: H01F1/153

Abstract: PURPOSE:To maintain ductility of amorphous magnetic material and increase the saturation magnetic flux density and further improve the anticorrosion and antiabrasion, by a method wherein constituents represented by Ap, Bq, Cr, Ds and ratio are specified. CONSTITUTION:When represented by general formula Ap, Bq, Cr, Ds (p+q+r+ s=100at%), constituent amounts p, q, r, s are selected in regions 70

Abstract translation: 目的：通过规定由Ap，Bq，Cr，Ds和比率表示的成分的方法，为了保持非晶磁性材料的延展性并增加饱和磁通密度，并进一步改善抗腐蚀和抗磨损性。 构成：当由通式Ap，Bq，Cr，Ds（p + q + r + s = 100at％）表示时，在区域70

公开(公告)号：JPS599157A

公开(公告)日：1984-01-18

申请号：JP11901382

申请日：1982-07-08

Applicant: Sony Corp

Inventor： HAYAKAWA MASATOSHI ,  ASO KOUICHI ,  KAMIHIRA AKIRA ,  OCHIAI YOSHITAKA ,  MATSUDA HIDEKI ,  HOTAI KAZUHIDE ,  HAYASHI KAZUHIKO

IPC: C21D1/04 ,  C21D6/00 ,  C22C45/02 ,  C22F1/00 ,  C22F1/10 ,  G11B5/127 ,  G11B5/147 ,  H01F1/153

CPC classification number: H01F1/15341 ,  C21D1/04

Abstract: PURPOSE: To increase the magnetic permeability of a thin amorphous magnetic alloy plate even when the alloy composition has high saturation magnetic flux density by keeping the plate at a specified temp. and by alternately impressing magnetic fields to the plate in directions which are perpendicular to each other at equal time intervals to heat treat the plate.
CONSTITUTION: A thin amorphous magnetic alloy plate 1 is put in an electric furnace and kept at a temp. below the crystallization temp. of the alloy and below the Curie temp. By supplying electric currents to coils 2, 3 wound around the plate 1 perpendicularly to each other, magnetic fields which meet at right angles are alternately generated to heat treat the plate 1. At this time, electric currents are supplied to the coils 2, 3 in accordance with timing wave-forms 4, 5 shown by the figure. This method is applicable to an amorphous magnetic alloy having a cooling effect in a magnetic field, and high magnetic permeability can be given even to a composition having ≥10,000 saturation magnetic flux density. Accordingly, a superior material for the soft magnetic core of a magnetic head, etc. can be provided.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：为了提高薄的非晶磁性合金板的磁导率，即使当合金组成通过将板保持在特定温度时具有高饱和磁通密度时。 并且通过以相等的时间间隔相互垂直的方向交替地向板施加磁场，以对板进行加热处理。 构成：将薄的无定形磁性合金板1放入电炉中并保持在温度 低于结晶温度 的合金，低于居里温度。 通过向卷绕在板1上的线圈2,3提供电流，交替地产生垂直相交的磁场，以对板1进行热处理。此时，电流被提供给线圈2,3 按照波形图4,5，如图所示。 该方法适用于在磁场中具有冷却效果的非晶磁合金，甚至可以赋予具有> = 10000饱和磁通密度的组成的高磁导率。 因此，可以提供用于磁头等的软磁芯的优良材料。

公开(公告)号：JPS5779157A

公开(公告)日：1982-05-18

申请号：JP15398580

申请日：1980-10-31

Applicant: Sony Corp

Inventor： MAKINO YOSHIMI ,  OCHIAI YOSHITAKA ,  KAMIHIRA AKIRA ,  HOTAI KAZUHIDE ,  ASO KOUICHI ,  HAYAKAWA MASATOSHI

IPC: C22F1/00 ,  C21D1/04 ,  C22C19/07 ,  C22C45/04 ,  C22F1/10

CPC classification number: C22C45/04 ,  C21D1/04

Abstract: PURPOSE: To obtain an amorphous magnetic alloy with high permeability and high saturation magnetic flux density by heat-treating an amorphous magnetic alloy at a temp. below the crystallization temp. in a magnetic field while rotating the alloy at a specified relative speed.
CONSTITUTION: An amorphous magnetic alloy such as Fe
4.7 Co
75.3 Si
4 B
16 is heat- treated in a static or rotary magnetic field while relatively rotating the alloy at a speed represented by equation I[where R is speed of rotation (rotational frequency), τ
0 is average time consumed before said alloy reaches the thermal equilibrium of induced magnetic anisotropy, and n is an arbitrary natural number]. At this time, it is required to conduct the heat treatment at a temp. below the crystallization temp. of said alloy. Thus, the desired amorphous magnetic alloy with high permeability and high saturation magnetic flux density is obtd. This alloy is suitable for use as a material for the soft magnetic core of a magnetic head, etc. Said relative rotation includes 3-dimensional rotation as well as 2-dimensional rotation.
COPYRIGHT: (C)1982,JPO&Japio

Abstract translation: 目的：通过在室温下对非晶磁性合金进行热处理，获得具有高磁导率和高饱和磁通密度的无定形磁性合金。 低于结晶温度 同时以特定的相对速度旋转合金。 构成：将Fe4.7Co75.3Si4B16等非晶磁性合金在静态或旋转磁场中进行热处理，同时以等式I [R]为转速（转速）表示的速度相对旋转合金，τ0为 在所述合金达到感应磁各向异性的热平衡之前消耗的平均时间，n是任意的自然数]。 此时，需要在温度下进行热处理。 低于结晶温度 的所述合金。 因此，具有高磁导率和高饱和磁通密度的期望的非晶磁性合金是可以理解的。 该合金适合用作磁头的软磁芯等的材料。所述相对旋转包括三维旋转以及二维旋转。

公开(公告)号：JPS565962A

公开(公告)日：1981-01-22

申请号：JP8095579

申请日：1979-06-27

Applicant: SONY CORP

Inventor： MAKINO YOSHIMI ,  HAYAKAWA MASATOSHI ,  ASO KOUICHI ,  KAMIHIRA AKIRA ,  ITOU MORIYASU ,  HOTAI KAZUHIDE

IPC: C22F1/00 ,  C21D1/04 ,  C22C45/04 ,  H01F1/153

Abstract: PURPOSE:To considerably enhance the permeability of an amorphous magnetic alloy material by heat treating the material at a temp. below the crystallization temp. in a static or rotating magnetic field while rotating it relatively to the field to eliminate induced magnetic anisotropy. CONSTITUTION:A mangetic Fe-Co-Si-B alloy is refined, and the molten alloy is very rapidly cooled by a centrifugal rapid cooling method, a one-roll method, a twin-roll method or other method to manufacture an amorphous ribbonlike alloy sheet. This sheet is held by a holder and heat treated at 300 deg.C which is below the crystallization temp. for 60min while being rotated in 5kOe a DC magnetic field with a motor undergoing 20 revolutions per sec. The heat treated sheet is then cooled while being rotated in the field. At this time, the direction of the field is made parallel with the upper surface of the sheet, that is, the surface of rotation. Thus, an amorphous alloy can easily be manufactured which is suitable for use as a soft magnetic core material for a magnetic head, etc. and has high permeability and high saturation magnetic flux density.