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1. 发明授权

US06740384B2 Recording media having protective overcoats of highly tetrahedral amorphous carbon and methods for their production 有权
公开(公告)号：US06740384B2
公开(公告)日：2004-05-25
申请号：US10354336
申请日：2003-01-29
申请人： Vijayen Veerasamy , Manfred Weiler , Eric Li
发明人： Vijayen Veerasamy , Manfred Weiler , Eric Li
IPC分类号： G11B572
CPC分类号： H01J37/32357 , C03C17/22 , C03C2217/282 , C03C2218/151 , C23C16/26 , C23C16/486 , G11B5/72 , G11B5/8408 , H01J27/18 , H01J37/08 , H01J37/32091 , H01J2237/0815 , Y10T428/1164 , Y10T428/24355 , Y10T428/265 , Y10T428/30 , Y10T428/31678
摘要： The invention provides systems and methods for the deposition of an improved diamond-like carbon material, particularly for the production of magnetic recording media. The diamond-like carbon material of the present invention is highly tetrahedral, that is, it features a large number of the sp3 carbon-carbon bonds which are found within a diamond crystal lattice. The material is also amorphous, providing a combination of short-range order with long-range disorder, and can be deposited as films which are ultrasmooth and continuous at thicknesses substantially lower than known amorphous carbon coating materials. The carbon protective coatings of the present invention will often be hydrogenated. In a preferred method for depositing of these materials, capacitive coupling forms a highly uniform, selectively energized stream of ions from a dense, inductively ionized plasma. Such inductive ionization is enhanced by a relatively slow moving (or “quasi-static”) magnetic field, which promotes resonant ionization and ion beam homogenization.

2. 发明授权

US06682807B2 Magnetic disk comprising a first carbon overcoat having a high SP3 content and a second carbon overcoat having a low SP3 content 有权
公开(公告)号：US06682807B2
公开(公告)日：2004-01-27
申请号：US10255295
申请日：2002-09-26
申请人： Bruce Lairson , Ching Jackie Tsoi , Wen Liu , Shigeto Hashimoto , Eric Woo Hock Yong , Tsutomu Tom Yamashita
发明人： Bruce Lairson , Ching Jackie Tsoi , Wen Liu , Shigeto Hashimoto , Eric Woo Hock Yong , Tsutomu Tom Yamashita
IPC分类号： G11B572
CPC分类号： G11B5/851 , C23C14/0605 , C23C16/26 , G11B5/8408 , G11B5/85 , Y10T428/24942 , Y10T428/24975 , Y10T428/30
摘要： A method for making a magnetic disk comprises forming first and second protective carbon layers on a magnetic layer. The first protective carbon layer is predominantly SP3 carbon. The second protective carbon layer comprises about 50% or less SP3 carbon. The second protective carbon layer is very thin, e.g. between 0.1 and 1.0 nm thick. A lubricant layer (e.g. a perfluoropolyether lubricant) is applied to the second protective carbon layer. The second protective carbon layer facilitates improved cooperation between lubricant and the disk.

3. 发明授权

US06638622B2 Perfluorinated polyethers with metal carboxylate end groups as anti-wetting and corrosion-protective agents 有权
公开(公告)号：US06638622B2
公开(公告)日：2003-10-28
申请号：US09759117
申请日：2001-01-11
申请人： Qing Dai , Paul Haruo Kasai , Wing Tsang Tang
发明人： Qing Dai , Paul Haruo Kasai , Wing Tsang Tang
IPC分类号： G11B572
CPC分类号： B82Y25/00 , B82Y10/00 , C10M107/38 , G11B5/3106 , G11B5/3903 , G11B5/40 , G11B5/725 , G11B2005/3996 , Y10T428/30 , Y10T428/3154 , Y10T428/31544
摘要： A process is provided for synthesizing metal salts of perfluorinated polyethers containing at least one carboxylic acid group. The polymeric salts so provided are effective as anti-wetting and corrosion-protective agents. The metal salts of perfluorinated polyether acids may be used to prepare corrosion-protected substrates, including magnetic recording disks and magnetic recording heads.

4. 发明授权

US06537668B1 Recording media having protective overcoats of highly tetrahedral amorphous carbon and methods for their production 有权
公开(公告)号：US06537668B1
公开(公告)日：2003-03-25
申请号：US09165513
申请日：1998-10-02
申请人： Veerasamy Vijayen , Manfred Weiler , Eric Li
发明人： Veerasamy Vijayen , Manfred Weiler , Eric Li
IPC分类号： G11B572
CPC分类号： H01J37/32357 , C03C17/22 , C03C2217/282 , C03C2218/151 , C23C16/26 , C23C16/486 , G11B5/72 , G11B5/8408 , H01J27/18 , H01J37/08 , H01J37/32091 , H01J2237/0815 , Y10T428/1164 , Y10T428/24355 , Y10T428/265 , Y10T428/30 , Y10T428/31678
摘要： The invention provides systems and methods for the deposition of an improved diamond-like carbon material, particularly for the production of magnetic recording media. The diamond-like carbon material of the present invention is highly tetrahedral, that is, it features a large number of the sp3 carbon-carbon bonds which are found within a diamond crystal lattice. The material is also amorphous, providing a combination of short-range order with long-range disorder, and can be deposited as films which are ultrasmooth and continuous at thicknesses substantially lower than known amorphous carbon coating materials. The carbon protective coatings of the present invention will often be hydrogenated. In a preferred method for depositing of these materials, capacitive coupling forms a highly uniform, selectively energized stream of ions from a dense, inductively ionized plasma. Such inductive ionization is enhanced by a relatively slow moving (or “quasi-static”) magnetic field, which promotes resonant ionization and ion beam homogenization.

5. 发明授权

US06815054B1 Ultra-thin, corrosion resistant, hydrogenated carbon overcoats by combined sputtering and PECVD 有权
标题翻译：通过组合溅射和PECVD，超薄，耐腐蚀，氢化碳外涂层
公开(公告)号：US06815054B1
公开(公告)日：2004-11-09
申请号：US09986863
申请日：2001-11-13
申请人： Wen Hong Liu , Yao-Tzung Roger Shih , Taesun Ernest Kim , Chung Yuang Shih
发明人： Wen Hong Liu , Yao-Tzung Roger Shih , Taesun Ernest Kim , Chung Yuang Shih
IPC分类号： G11B572
CPC分类号： G11B11/10584 , G11B5/656 , G11B5/72 , G11B5/8408 , G11B11/10586 , Y10T428/30
摘要： A method of forming a layer of a hard, abrasion, and corrosion-resistant hydrogenated carbon (C:H) material on a substrate surface comprises steps of: (a) providing a vacuum chamber including a carbon sputtering target in the interior space thereof; (b) providing a substrate in the chamber interior space, a surface of the substrate the sputtering target; (c) supplying the vacuum chamber with at least one hydrocarbon gas and at least one inert gas at separately controllable flow rates and applying a sufficient negative potential to the carbon target to generate a plasma in said interior space to deposit a layer of the C:H material on the substrate surface by a process comprising simultaneous sputtering of the carbon sputtering target and plasma enhanced chemical vapor deposition (PECVD) of carbon and hydrogen from the hydrocarbon gas, wherein: step (c) includes separately controlling the flow rates of each of the hydrocarbon and inert gases such that the amount of C atoms in the C:H which are contributed by the PECVD component of the process is less than about 50 at. %. Embodiments of the invention include utilizing the C:H material as a protective overcoat layer for magnetic and magneto-optical recording media.
摘要翻译：在基材表面上形成硬质，耐磨和耐腐蚀氢化碳（C：H）材料层的方法包括以下步骤：（a）在其内部空间中提供包括碳溅射靶的真空室; （b）在所述室内部空间中提供衬底，所述衬底的所述溅射靶的表面;（c）以独立可控的流速向所述真空室提供至少一种烃气体和至少一种惰性气体，并施加足够的负极通过包括碳溅射靶的同时溅射和碳的等离子体增强化学气相沉积（PECVD）的方法，在所述内部空间中产生等离子体的潜力以沉积在衬底表面上的C：H材料层，以及来自烃气体的氢，其中：步骤（c）包括分别控制每种烃和惰性气体的流速，使得C：H中的C原子的量为由PECVD组件重新贡献的过程小于约50。本发明的实施例包括利用C：H材料作为磁和磁光记录介质的保护性外涂层。

6. 发明授权

US06680106B1 Magnetic recording media with Ru corrosion barrier layer 有权
标题翻译：磁记录介质具有钌腐蚀阻隔层
公开(公告)号：US06680106B1
公开(公告)日：2004-01-20
申请号：US10127771
申请日：2002-04-23
申请人： Raj Thangaraj , Charles Frederick Brucker , Huan Tang , Jing Gui , Gary Rauch
发明人： Raj Thangaraj , Charles Frederick Brucker , Huan Tang , Jing Gui , Gary Rauch
IPC分类号： G11B572
CPC分类号： G11B5/722 , Y10T428/265
摘要： Corrosion protection of magnetic recording media is achieved by providing a thin protective barrier layer comprising ruthenium on the magnetic layer. Embodiments include forming a corrosion barrier layer less than 10 Å of elemental ruthenium, a ruthenium oxide, a ruthenium alloy, a layer comprising mixed oxides of ruthenium and an alloying element, a composite of a ruthenium layer and a layer of ruthenium oxide or a composite of a ruthenium alloy layer and a layer of mixed oxides of ruthenium and an alloying element. A carbon containing an overcoat is then formed, as at a thickness of about 10 Å to 50 Å, on the corrosion protective layer.
摘要翻译：通过在磁性层上提供包含钌的薄的保护性阻挡层来实现磁记录介质的腐蚀保护。实施例包括形成小于元素钌的腐蚀阻隔层，氧化钌，钌合金，包含钌和合金元素的混合氧化物的层，钌层和氧化钌层的复合物或复合材料的钌合金层和钌和合金元素的混合氧化物层。然后在腐蚀保护层上形成含有外涂层的碳，厚度为约至Å。

7. 发明授权

US06613422B1 Nitrogen -implanted, high carbon density overcoats for recording media 有权
标题翻译：用于记录介质的氮移植，高碳密度外涂层
公开(公告)号：US06613422B1
公开(公告)日：2003-09-02
申请号：US09994780
申请日：2001-11-28
申请人： Xiaoding Ma , Michael Joseph Stirniman , Jing Gui
发明人： Xiaoding Ma , Michael Joseph Stirniman , Jing Gui
IPC分类号： G11B572
CPC分类号： G11B5/72 , G11B11/10584 , G11B11/10586 , Y10T428/24942 , Y10T428/24975 , Y10T428/24992 , Y10T428/265 , Y10T428/30
摘要： A method of forming a layer of a novel hard, abrasion and corrosion resistant, nitrogen-doped, high carbon density, amorphous carbon or hydrogenated carbon (C:H) protective overcoat material on a surface of a recording medium comprises steps of: (a) providing a substrate including a stacked plurality of thin film layers thereon constituting the medium; (b) forming, by a process comprising generation and deposition of C ions having energies of at least about 90 eV, a layer of an amorphous carbon or hydrogenated carbon (C:H) material on the at least one surface of the substrate, the C:H layer having a high carbon density of at least about 2.0 gm/cm3; and (c) implanting nitrogen (N) ions in a surface portion of the high carbon density amorphous carbon or C:H layer to form an N-doped amorphous carbon or C:H surface layer having a carbon density substantially equal to said high C density of the C:H layer formed in step (b). Embodiments of the invention include thin-film magnetic and magneto-optical recording media including a layer of the novel material as a protective overcoat.
摘要翻译：在记录介质的表面上形成新颖的耐硬，耐磨，耐腐蚀，氮掺杂，高碳密度，无定形碳或氢化碳（C：H）保护性覆盖材料层的方法包括以下步骤：（a ）提供包括构成介质的层叠的多个薄膜层的衬底;（b）通过包括产生和沉积具有至少约90eV的能量的C离子的方法形成无定形碳或氢化碳的层（C：H）材料，所述基材的至少一个表面上的C：H层具有至少约2.0gm / cm 3的高碳密度; 和（c）在高碳密度无定形碳或C：H层的表面部分中注入氮（N）离子以形成具有基本上等于所述高C的碳密度的N掺杂无定形碳或C：H表面层在步骤（b）中形成的C：H层的密度。本发明的实施例包括包括作为保护性外涂层的新型材料层的薄膜磁性和磁光记录介质。

8. 发明授权

US06586086B1 Magnetic recording medium and making method 失效
标题翻译：磁记录介质及制作方法
公开(公告)号：US06586086B1
公开(公告)日：2003-07-01
申请号：US09660407
申请日：2000-09-12
申请人： Satoru Tsuchida
发明人： Satoru Tsuchida
IPC分类号： G11B572
CPC分类号： G11B5/72 , G11B5/8408 , Y10T428/25 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium comprising a magnetic layer of 0.05-0.15 &mgr;m thick containing at least a magnetic powder and a binder on a non-magnetic substrate, a diamond-like carbon film of 5-30 nm thick is formed on the magnetic layer by plasma CVD, and a lubricating layer is formed thereon. The medium has improved friction properties and durability.
摘要翻译：在包含非磁性基板上至少含有磁性粉末和粘合剂的0.05-0.15μm厚的磁性层的磁记录介质中，通过在磁性层上形成5-30nm厚的类金刚石碳膜，等离子体CVD，形成润滑层。介质具有改善的摩擦性能和耐久性。

9. 发明授权

US06586070B1 Thin film TiSixNy protective layer 有权
标题翻译：薄膜TiSixNy保护层
公开(公告)号：US06586070B1
公开(公告)日：2003-07-01
申请号：US10119328
申请日：2002-04-08
申请人： Qing Dai , Bruno Marchon , Michael Andrew Scarpulla , Richard Longstreth White , Bing K. Yen
发明人： Qing Dai , Bruno Marchon , Michael Andrew Scarpulla , Richard Longstreth White , Bing K. Yen
IPC分类号： G11B572
CPC分类号： G11B5/72 , G11B5/82 , G11B5/8408 , G11B2005/001
摘要： A overcoat layer of TiSixNy for use on a magnetic thin film disk is disclosed. The overcoat of the invention has high hardness, provides corrosion protection and has low surface energy which reduces contaminant attraction. The TiSixNy film is conductive and, therefore, reduces the deleterious effects of tribocharging.
摘要翻译：公开了用于磁性薄膜盘上的TiSixNy的外涂层。本发明的外涂层具有高硬度，提供防腐蚀和低表面能，减少了污染物的吸引。 TiSixNy膜是导电的，因此减少摩擦带电的有害影响。

10. 发明授权

US06824836B1 Protection overcoat for recording media 失效
标题翻译：保护大衣记录媒体
公开(公告)号：US06824836B1
公开(公告)日：2004-11-30
申请号：US10624488
申请日：2003-07-23
申请人： Jing Gui , Michael Stirniman , Xiaoding Ma
发明人： Jing Gui , Michael Stirniman , Xiaoding Ma
IPC分类号： G11B572
CPC分类号： G11B5/72 , Y10S427/103 , Y10T428/24942 , Y10T428/265 , Y10T428/30
摘要： A magnetic recording medium comprising a magnetic layer and a protective carbon-containing overcoat comprising a first carbon density, preferably of a low-density carbon, and a second carbon density different from the first carbon density, preferably of a high-density carbon, and a method of making and using the magnetic recording medium are disclosed.
摘要翻译：一种包含磁性层和保护性含碳外涂层的磁记录介质，其包含优选低密度碳的第一碳密度和不同于第一碳密度的第二碳密度，优选为高密度碳，以及公开了制造和使用磁记录介质的方法。

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