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    • 3. 发明授权
    • Dual-layer carbon-based protective overcoats for recording media by filtered cathodic ARC deposition
    • 用于通过过滤阴极ARC沉积记录介质的双层碳基保护涂层
    • US07175926B2
    • 2007-02-13
    • US10776191
    • 2004-02-12
    • Xiaoding MaMichael Joseph StirnimanJing Gui
    • Xiaoding MaMichael Joseph StirnimanJing Gui
    • G11B5/72
    • G11B5/72C23C14/0605G11B5/8408Y10T428/24975Y10T428/24983Y10T428/24992
    • A recording medium, comprising: (a) a substrate having at least one surface; (b) a stacked plurality of thin film layers on the at least one surface and including at least one magnetic or magneto-optical (MO) recording layer; and (c) a protective overcoat layer on an outer surface of an outermost layer of the layer stack, comprising: (i) a first sub-layer layer (c1) of undoped tetrahedral amorphous carbon (ta-C) formed by filtered cathodic arc deposition (FCAD) on the outer surface of the outermost layer of the stacked plurality of thin film layers and having a high mass density of carbon (C) atoms greater than about 2.5 gms/cm3; and (ii) a second sub-layer (c2) of nitrogen-doped tetrahedral amorphous carbon (ta-C:N) formed by FCAD on the undoped ta-C layer and having a high mass density of carbon (C) atoms greater than about 2.0 gms/cm3.
    • 一种记录介质,包括:(a)具有至少一个表面的基底; (b)在所述至少一个表面上堆叠的多个薄膜层,并且包括至少一个磁光或磁光(MO)记录层; (c)在层叠体的最外层的外表面上的保护性外涂层,包括:(i)未掺杂的四面体无定形碳(ta)的第一子层层(c 1) -C)通过过滤的阴极电弧沉积(FCAD)形成在层叠的多个薄膜层的最外层的外表面上,并且具有大于约2.5gms / cm 2的碳(C)原子的高质量密度, 3 ; 和(ii)由FCAD在未掺杂的Ta-C层上形成并且具有高质量密度的由氮化物掺杂的四面体无定形碳(ta-C:N)的第二子层(c 2 N 2) 的碳(C)原子大于约2.0gms / cm 3。
    • 10. 发明授权
    • Nitrogen -implanted, high carbon density overcoats for recording media
    • 用于记录介质的氮移植,高碳密度外涂层
    • US06613422B1
    • 2003-09-02
    • US09994780
    • 2001-11-28
    • Xiaoding MaMichael Joseph StirnimanJing Gui
    • Xiaoding MaMichael Joseph StirnimanJing Gui
    • G11B572
    • G11B5/72G11B11/10584G11B11/10586Y10T428/24942Y10T428/24975Y10T428/24992Y10T428/265Y10T428/30
    • 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.
    • 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。