公开(公告)号：US5820965A

公开(公告)日：1998-10-13

申请号：US868217

申请日：1997-06-03

Applicant: Aleksander J. Pyzik ,  Chan Han ,  Uday V. Deshmukh ,  Kevin J. Nilsen ,  Donald J. Perettie ,  Arthur R. Prunier, Jr.

Inventor： Aleksander J. Pyzik ,  Chan Han ,  Uday V. Deshmukh ,  Kevin J. Nilsen ,  Donald J. Perettie ,  Arthur R. Prunier, Jr.

IPC: C04B41/88 ,  C22C1/10 ,  C22C29/00 ,  C22C29/06 ,  C22C32/00 ,  G11B5/596 ,  G11B5/62 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84 ,  G11B23/00 ,  H01L23/15 ,  B32B3/10 ,  B32B5/02 ,  C04B35/503

CPC classification number: G11B5/7315 ,  C22C1/1036 ,  C22C29/062 ,  C22C32/0057 ,  G11B23/0064 ,  G11B5/731 ,  G11B5/82 ,  G11B5/8404 ,  H01L23/15 ,  B22F2998/00 ,  G11B5/596 ,  H01L2924/0002 ,  H01L2924/09701 ,  Y10T428/12028 ,  Y10T428/12049 ,  Y10T428/12056 ,  Y10T428/12063 ,  Y10T428/12069 ,  Y10T428/249994 ,  Y10T428/256

Abstract: A hard drive disk substrate is formed of a multi-phase ceramic-based material having at least two phases with amorphous phases being present in an amount less than about 1 volume percent based on the volume of the ceramic-based material or at least one phase being free metal. A process for producing the ceramic-based disk substrate is produced by forming a flat disk of a porous ceramic and then infiltrating the porous ceramic with a metal whereby a multi-phase ceramic-based computer hard drive disk is produced. Additionally, a step of passivating the porous ceramic by elevating it to a temperature of about 1300.degree. to about 1800.degree. C. before the infiltrating step may be performed, such that the surfaces are passivated and the reaction kinetics can be controlled during the infiltrating step. A preferred composite material is made of a multi-phase boron carbide composite material including grains having peaks with an average roughness value, Ra, of between about 1 to about 200.ANG., the roughness value being formed in situ by causing a micro hardness gradient of between about 19 and about 3200 Kg/mm.sup.2 in the various phases of the multi-phase boron carbide composite material.

Abstract translation: 硬盘驱动器盘基板由具有至少两相的多相陶瓷基材料形成，其中无定形相以基于陶瓷基材料的体积或至少一相的量存在的量小于约1体积％ 是免费金属。 通过形成多孔陶瓷的平板，然后用金属渗透多孔陶瓷来制造陶瓷基盘基板的方法，由此制造多相陶瓷基计算机硬盘驱动盘。 此外，可以在渗透步骤之前将其升高至约1300℃至约1800℃的温度来钝化多孔陶瓷的步骤，使得表面被钝化，并且可以在渗透步骤期间控制反应动力学 。 优选的复合材料由多相碳化硼复合材料制成，其包括具有平均粗糙度值Ra的峰值在约1至约200之间的晶粒，该粗糙度值通过使原位形成的微观硬度梯度 在多相碳化硼复合材料的各个相中约19至约3200Kg / mm 2。

公开(公告)号：US20040091662A1

公开(公告)日：2004-05-13

申请号：US10607937

申请日：2003-06-27

Inventor： Iraj Kavosh ,  James Shuster ,  Andrew Ching Tam

IPC: B32B003/02

CPC classification number: G11B5/8408 ,  B23K26/06 ,  B23K26/0648 ,  B23K26/0665 ,  B23K26/244 ,  G11B5/656 ,  G11B5/731 ,  G11B5/732 ,  G11B5/82 ,  G11B5/851

Abstract: A magnetic disk is provided which comprises a nonmetallic glass or glass ceramic substrate having one or more under layers, a magnetic layer applied over the under layers, and a hard carbon layer applied over the magnetic layer. A plurality of bumps are formed on the magnetic disk by applying a beam from a near infrared wavelength laser to the surface of the carbon layer.

Abstract translation: 提供一种磁盘，其包括具有一个或多个下层的非金属玻璃或玻璃陶瓷基板，施加在下层上的磁性层和施加在该磁性层上的硬碳层。 通过将来自近红外波长激光的光束施加到碳层的表面，在磁盘上形成多个凸块。

公开(公告)号：US20180114541A1

公开(公告)日：2018-04-26

申请号：US15565050

申请日：2016-03-08

Applicant: Sony Corporation

Inventor： Eiji NAKASHIO ,  Futoshi SASAKI ,  Yuuichi MASUZAWA ,  Masaru TERAKAWA ,  Minoru YAMAGA ,  Yoichi KANEMAKI ,  Kazuya HASHIMOTO ,  Tomoe SATO ,  Nobuyuki SASAKI

IPC: G11B5/733 ,  G11B5/73

CPC classification number: G11B5/733 ,  G11B5/70 ,  G11B5/731

Abstract: Provided is a magnetic recording medium including: a support body; a base layer containing carbon particle powder and metal-containing particle powder; and a recording layer. In a recording surface, a maximum indentation depth h is 85≤h≤140, and a ratio d of a permanent strain to an elastic recovery (permanent strain/elastic recovery) is 0.95≤d≤1.25.

公开(公告)号：US20160293199A1

公开(公告)日：2016-10-06

申请号：US15034502

申请日：2015-04-20

Applicant: FUJI ELECTRIC CO., LTD.

Inventor： Tomohiro Moriya ,  Takehito Shimatsu

IPC: G11B5/84 ,  G11B5/73 ,  C03C17/36 ,  C23C14/08 ,  C23C14/18 ,  G11B5/851 ,  C30B23/08 ,  C30B23/06 ,  C30B29/52 ,  C30B29/02 ,  C30B29/16 ,  G11B5/65 ,  C23C14/34

CPC classification number: G11B5/8404 ,  C03C17/361 ,  C03C17/3615 ,  C03C17/3634 ,  C03C17/3639 ,  C03C17/3642 ,  C03C17/3649 ,  C03C2217/70 ,  C03C2218/151 ,  C03C2218/156 ,  C03C2218/31 ,  C23C14/081 ,  C23C14/18 ,  C23C14/185 ,  C23C14/34 ,  C30B23/066 ,  C30B23/08 ,  C30B29/02 ,  C30B29/16 ,  C30B29/52 ,  G11B5/65 ,  G11B5/731 ,  G11B5/851

Abstract: The purpose of the present invention is to provide a method for manufacturing a magnetic recording medium including a magnetic recording layer having a larger magnetic anisotropic constant Ku. The method according to the present invention includes the steps of: (a) preparing a substrate; (b) heating the substrate to a temperature of 350° C. or higher, and depositing a non-magnetic material containing MgO as a main component to form a base layer; and (c) forming a magnetic recording layer onto the base layer.

Abstract translation: 本发明的目的是提供一种制造磁记录介质的方法，所述磁记录介质包括具有较大磁性各向异性常数Ku的磁记录层。 根据本发明的方法包括以下步骤：（a）制备基底; （b）将基板加热到350℃以上的温度，并沉积含有MgO作为主要成分的非磁性材料以形成基底层; 和（c）在基底层上形成磁记录层。

公开(公告)号：US06797130B2

公开(公告)日：2004-09-28

申请号：US10607937

申请日：2003-06-27

Applicant: Iraj Kavosh ,  James Shuster ,  Andrew Ching Tam

Inventor： Iraj Kavosh ,  James Shuster ,  Andrew Ching Tam

IPC: B23K2606

CPC classification number: G11B5/8408 ,  B23K26/06 ,  B23K26/0648 ,  B23K26/0665 ,  B23K26/244 ,  G11B5/656 ,  G11B5/731 ,  G11B5/732 ,  G11B5/82 ,  G11B5/851

Abstract: A magnetic disk is provided which comprises a nonmetallic glass or glass ceramic substrate having one or more under layers, a magnetic layer applied over the under layers, and a hard carbon layer applied over the magnetic layer. A plurality of bumps are formed on the magnetic disk by applying a beam from a near infrared wavelength laser to the surface of the carbon layer.

公开(公告)号：US5672435A

公开(公告)日：1997-09-30

申请号：US496797

申请日：1995-06-29

Applicant: David W. Born ,  Uday V. Deshmukh ,  Timothy G. Fawcett ,  Richard T. Fox ,  Kevin J. Nilsen ,  Aleksander J. Pyzik

Inventor： David W. Born ,  Uday V. Deshmukh ,  Timothy G. Fawcett ,  Richard T. Fox ,  Kevin J. Nilsen ,  Aleksander J. Pyzik

IPC: C04B41/88 ,  C22C1/05 ,  C22C1/10 ,  C22C21/00 ,  C22C29/00 ,  C22C29/02 ,  C22C32/00 ,  G11B5/596 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84 ,  G11B21/02 ,  G11B23/00 ,  G11B33/12 ,  H01L23/15 ,  B22F3/26

CPC classification number: C22C1/1036 ,  C22C32/0057 ,  G11B23/0064 ,  G11B5/731 ,  G11B5/82 ,  G11B5/8404 ,  H01L23/15 ,  B22F2998/00 ,  G11B5/596 ,  H01L2924/0002 ,  H01L2924/09701 ,  Y10T428/12028 ,  Y10T428/12049 ,  Y10T428/12056 ,  Y10T428/12063 ,  Y10T428/12069

Abstract: Hard disk drive components, such as, sliders, load beams, support arms, actuators, actuator bearings, spacers, clamps, spindles, ball bearings, thrust bearings, journal bearings, base plates, housings, and covers, formed of a multi-phase ceramic-based material. One method of making the hard disk drive components includes (a) forming a porous body of ceramic; (b) infiltrating a liquid into the pores of the ceramic body; (c) solidifying the infiltrated liquid; and (d) machining the metal-infiltrated ceramic body to form the hard disk drive component.

Abstract translation: 诸如滑块，负载梁，支撑臂，致动器，致动器轴承，间隔件，夹具，主轴，滚珠轴承，推力轴承，轴颈轴承，基板，壳体和盖的硬盘驱动部件，由多相 陶瓷基材料。 制造硬盘驱动器部件的一种方法包括（a）形成多孔陶瓷体; （b）将液体渗透到陶瓷体的孔中; （c）固化渗透液体; 和（d）加工金属渗透的陶瓷体以形成硬盘驱动部件。

公开(公告)号：US20030044647A1

公开(公告)日：2003-03-06

申请号：US09947287

申请日：2001-09-05

Inventor： Iraj Kavosh ,  James Shuster ,  Andrew Ching Tam

IPC: B32B027/14

CPC classification number: G11B5/8408 ,  B23K26/06 ,  B23K26/0648 ,  B23K26/0665 ,  B23K26/244 ,  G11B5/656 ,  G11B5/731 ,  G11B5/7379 ,  G11B5/82 ,  G11B5/851

Abstract: A magnetic disk is provided which comprises a nonmetallic glass or glass ceramic substrate having one or more under layers, a magnetic layer applied over the under layers, and a hard carbon layer applied over the magnetic layer. A plurality of bumps are formed on the magnetic disk by applying a beam from a near infrared wavelength laser to the surface of the carbon layer.

Abstract translation: 提供一种磁盘，其包括具有一个或多个下层的非金属玻璃或玻璃陶瓷基板，施加在下层上的磁性层和施加在该磁性层上的硬碳层。 通过将来自近红外波长激光的光束施加到碳层的表面，在磁盘上形成多个凸块。

公开(公告)号：US5780164A

公开(公告)日：1998-07-14

申请号：US496798

申请日：1995-06-29

Applicant: Aleksander J. Pyzik ,  Uday V. Deshmukh ,  Chan Han ,  Kevin J. Nilsen ,  Donald J. Perettie ,  Arthur R. Prunier, Jr.

Inventor： Aleksander J. Pyzik ,  Uday V. Deshmukh ,  Chan Han ,  Kevin J. Nilsen ,  Donald J. Perettie ,  Arthur R. Prunier, Jr.

IPC: C04B41/88 ,  C22C1/10 ,  C22C29/00 ,  C22C29/06 ,  C22C32/00 ,  G11B5/596 ,  G11B5/62 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84 ,  G11B23/00 ,  H01L23/15 ,  B22F3/26

CPC classification number: G11B5/7315 ,  C22C1/1036 ,  C22C29/062 ,  C22C32/0057 ,  G11B23/0064 ,  G11B5/731 ,  G11B5/82 ,  G11B5/8404 ,  H01L23/15 ,  B22F2998/00 ,  G11B5/596 ,  H01L2924/0002 ,  H01L2924/09701 ,  Y10T428/12028 ,  Y10T428/12049 ,  Y10T428/12056 ,  Y10T428/12063 ,  Y10T428/12069 ,  Y10T428/249994 ,  Y10T428/256

Abstract: A hard drive disk substrate is formed of a multi-phase ceramic-based material having at least two phases with amorphous phases being present in an amount less than about 1 volume percent based on the volume of the ceramic-based material or at least one phase being free metal. A process for producing the ceramic-based disk substrate is produced by forming a flat disk of a porous ceramic and then infiltrating the porous ceramic with a metal whereby a multi-phase ceramic-based computer hard drive disk is produced. Additionally, a step of passivating the porous ceramic by elevating it to a temperature of about 1300.degree. to about 1800.degree. C. before the infiltrating step may be performed, such that the surfaces are passivated and the reaction kinetics can be controlled during the infiltrating step. A preferred composite material is made of a multi-phase boron carbide composite material including grains having peaks with an average roughness value, Ra, of between about 1 to about 200 .ANG., the roughness value being formed in situ by causing a micro hardness gradient of between about 19 and about 3200 Kg/mm.sup.2 in the various phases of the multi-phase boron carbide composite material.

Abstract translation: 硬盘驱动器盘基板由具有至少两相的多相陶瓷基材料形成，其中无定形相以基于陶瓷基材料的体积或至少一相的量存在的量小于约1体积％ 是免费金属。 通过形成多孔陶瓷的平板，然后用金属渗透多孔陶瓷来制造陶瓷基盘基板的方法，由此制造多相陶瓷基计算机硬盘驱动盘。 此外，可以在渗透步骤之前将其升高至约1300℃至约1800℃的温度来钝化多孔陶瓷的步骤，使得表面被钝化，并且可以在渗透步骤期间控制反应动力学 。 优选的复合材料由多相碳化硼复合材料制成，其包括具有平均粗糙度值Ra的峰值在约1至约200之间的晶粒，该粗糙度值通过使原位形成的微观硬度梯度 在多相碳化硼复合材料的各个相中约19至约3200Kg / mm 2。