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公开(公告)号：US5136819A
公开(公告)日：1992-08-11
申请号：US649076
申请日：1991-02-01
申请人： Masakuni Takagi , Hiroyoshi Takeuchi , Hideaki Fukai , Toshio Sakiyama , Hiroyoshi Suenaga , Kuninori Minakawa
发明人： Masakuni Takagi , Hiroyoshi Takeuchi , Hideaki Fukai , Toshio Sakiyama , Hiroyoshi Suenaga , Kuninori Minakawa
CPC分类号： B24B13/00 , B24B37/042
摘要： According to a mirror surface polishing process of the present invention, it is possible to produce Ti-made magnetic disc substrate which have the excellent flatness degree and surface roughness in that the average roughness is not more than 0.05 .mu.m and the flatness degree of the outer periphery is not more than 0.15 .mu.m.
摘要翻译： 根据本发明的镜面抛光工艺，可以生产具有优异的平坦度和表面粗糙度的Ti制磁盘基片，其平均粗糙度不大于0.05μm，平均度为 外围不超过0.15亩。
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公开(公告)号：US5131995A
公开(公告)日：1992-07-21
申请号：US662272
申请日：1991-02-28
IPC分类号： C23C14/02 , B29D17/00 , C23C14/06 , C23C14/08 , C23C14/14 , G11B5/66 , G11B5/73 , G11B5/738 , G11B5/82 , G11B5/84
CPC分类号： G11B5/7305 , G11B5/84
摘要： After the surface roughness of a titanium substrate is set to be R.sub.max .ltoreq.0.08 .mu.m, a hardened layer having a hardness of H.sub.v .gtoreq.250 is formed thereon to have a thickness of 50 to 250 .mu.m by sputtering, thereby manufacturing a titanium magnetic disk substrate.
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公开(公告)号：US5360677A
公开(公告)日：1994-11-01
申请号：US4190
申请日：1993-01-13
CPC分类号： G11B5/7315 , G11B5/73 , Y10S428/90
摘要： A magnetic disk substrate having a composition wherein (V/13)+(Fe/20)+(Cr/17)+(Ni/31)+(Co/23) are no greater than 0.010%, Rem+Si+B+W are no greater than 0.015% (where Rem denotes rare earth metals), 0+2N+0.75C are no less than 0.03% and no greater than 0.5%, and the remainder consists substantially of Ti, all % being weight %.
摘要翻译： 具有（V / 13）+（Fe / 20）+（Cr / 17）+（Ni / 31）+（Co / 23）为0.010％以下的组成的磁盘基板，Rem + Si + B + W不大于0.015％（其中Rem表示稀土金属），0 + 2N + 0.75C不小于0.03％且不大于0.5％，余量基本上由Ti组成，全部为重量％。
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公开(公告)号：US5159787A
公开(公告)日：1992-11-03
申请号：US769326
申请日：1991-09-30
申请人： Hiroyoshi Suenaga , Takeshi Ito , Masakuni Takagi , Hiroyoshi Takeuchi , Hideaki Fukai , Kuninori Minakawa
发明人： Hiroyoshi Suenaga , Takeshi Ito , Masakuni Takagi , Hiroyoshi Takeuchi , Hideaki Fukai , Kuninori Minakawa
CPC分类号： B24B37/28
摘要： A method for lapping two surfaces of a titanium disk comprises inserting loosely a titanium disk to be lapped into an opening in a disk-type carrier, the carrier rotating and revolving between an upper surface plate and a lower surface plate which are held in parallel with each other and which applies lapping pressure to the titanium disk, feeding abrasives between the surface plates and the titanium disk and satisfying the following relationship between thickness t (mm) of the titanium disk and thickness T (mm) of the carrier:0.025 exp (t+1.5).ltoreq.T.ltoreq.0.9 t
摘要翻译： 用于研磨钛盘的两个表面的方法包括将待研磨的钛盘松散地插入盘形载体的开口中，所述载体在上表面板和下表面板之间旋转并旋转，所述载体与 彼此并且对钛盘施加研磨压力，在表面板和钛盘之间输送磨料，并且满足钛盘的厚度t（mm）和载体的厚度T（mm）之间的以下关系：0.025exp（ t + 1.5）
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公开(公告)号：US5188677A
公开(公告)日：1993-02-23
申请号：US719331
申请日：1991-06-21
CPC分类号： G11B5/8404 , G11B5/73
摘要： A method of manufacturing a titanium alloy magnetic disk substrate comprising (a) cold-rolling an alloy plate at a rolling ratio of no less than 30%, the alloy plate comprising 0.5 wt. % to 1.0 wt. % of Mo and containing oxygen, nitrogen and carbon in amounts such that O+2N+0.75C is from 0.03 wt. % to 0.5 wt. % of the titanium alloy, and the balance being Ti, wherein O is the wt. % of oxygen, N is the wt. % of nitrogen and C is the wt. % of C to form a magnetic disk substrate material and then (b) thermal-flattening the magnetic substrate material from step (a) under a condition defined as follows:500.ltoreq.T.ltoreq.-(150/11).multidot.t+7,850/11 1.ltoreq.twhere T represents a thermal-flattening temperature in .degree.C., and t represents a thermal-flattening time in hours.
摘要翻译： 一种钛合金磁盘基板的制造方法，其特征在于，包括：（a）以不小于30％的滚动比冷轧合金板，所述合金板包含0.5重量％ ％〜1.0wt 的Mo含量，含有氧，氮和碳，其量使得O + 2N + 0.75C为0.03重量％。 ％至0.5wt。 ％的钛合金，余量为Ti，其中O为wt。 氧的百分比，N是重量。 ％的氮和C是wt。 ％的C以形成磁盘衬底材料，然后（b）在如下定义的条件下对步骤（a）的磁性衬底材料进行热平坦化：500
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公开(公告)号：US5120615A
公开(公告)日：1992-06-09
申请号：US536701
申请日：1990-06-12
CPC分类号： G11B5/8404 , G11B5/7315
摘要： A magnetic disk substrate composition 0.5 wt % to 1.0 wt % of Mo, 0.03 wt % to 0.5 wt % of O+2N+0.75C, and a balance of Ti. The alloy sheet having a composition of above range is cold-rolled at a rolling ratio of 30% or more to form a magnetic disk substrate material, and the material is thermal-flattened under the following condition:500.ltoreq.T.ltoreq.-(150/11).multidot.t+7850/111.ltoreq.twhere T represents a thermal-flattening temperature (.degree.C.), and t represents a thermal-flattening time (houre), thereby obtaining a magnetic disk substrate having the average grain size of 30 .mu.m or less.
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公开(公告)号：US5060845A
公开(公告)日：1991-10-29
申请号：US532911
申请日：1990-06-04
CPC分类号： B32B15/01 , B23K20/04 , Y10T428/12806 , Y10T428/12937
摘要： A method for manufacturing titanium clad steel plate by forming a slab assembly having an alloy steel substrate, a titanium metal or alloy cladding on said substrate and a Ni-Cr alloy foil or film having opposed surfaces between said alloy steel and said cladding. The Ni-Cr alloy foil or film has one surface in surface contact with the cladding and the opposed surface in surface contact with the alloy steel substrate. The Ni-Cr alloy contains 32.5 to 40 wt. % Cr and 55 to 65 wt. % Ni. The slab assembly is heated at a temperature of 850.degree. to 1010.degree. C. The heated slab assembly is hot rolled with a reduction ratio of 30% or more to form the titanium clad steel plate.
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公开(公告)号：US4944914A
公开(公告)日：1990-07-31
申请号：US443930
申请日：1989-11-30
IPC分类号： C22C14/00
CPC分类号： C22C14/00
摘要： The invention provides a titanium alloy having improved superplastic forming characteristics and mechanical characteristics. A titanium alloy having superplastic forming characteristics consisting essentially of about 5.5 to 6.75 wt. % Al, 3.5 to 4.5 wt. % V, 0.01 to 0.2 wt. % O, 0.85 to 3.15 wt. % Fe, 0.85 to 3.25 wt. % Mo, with 2.times.Fe wt. %+Mo wt. % being from 3 to 8, and balance titanium; said alloy containing .alpha.-crystals having a grain size below about 6 .mu.m in diameter. The Fe and Mo act as .beta.-stabilizing elements and contributing elements to lowering the beta transus and to the improvement of the superplastic characteristics.
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公开(公告)号：US4990362A
公开(公告)日：1991-02-05
申请号：US482026
申请日：1990-02-16
申请人： Hiroshi Kibe , Hideaki Fukai , Hiroyoshi Suenaga
发明人： Hiroshi Kibe , Hideaki Fukai , Hiroyoshi Suenaga
IPC分类号： C23C14/16 , C23C14/02 , C23C14/14 , C23C16/02 , C23C16/06 , G11B5/73 , G11B5/738 , G11B5/82 , G11B5/84
CPC分类号： G11B5/8404 , G11B5/7315
摘要： Titanium magnetic disk substrates are manufactured by preparing a base by stripping not less than 5 .mu.m from the surface layer of a titanium cold-rolled plate, and then forming a film of not less than 5 .mu.m consisting of 1 or more non-magnetic transition metal elements belonging to Groups IVA, VA, VIA, VIIA and VIIIA of the Periodic Table, on the surface of this base.
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公开(公告)号：US5221459A
公开(公告)日：1993-06-22
申请号：US874049
申请日：1992-04-24
申请人： Yoko Okano , Hiroyoshi Suenaga , Toshio Sakiyama , Kenji Morita , Masanori Ohmura , Iwao Ida , Hitoshi Nagashima
发明人： Yoko Okano , Hiroyoshi Suenaga , Toshio Sakiyama , Kenji Morita , Masanori Ohmura , Iwao Ida , Hitoshi Nagashima
CPC分类号： G11B5/8404 , C25D11/26
摘要： A method of manufacturing a magnetic disk substrate made of titanium, in which chemical etching is performed on a titanium disk for magnetic disk substrate, thereby removing a surface portion thereof having a thickness of at least 2 nm, and the new surface of the titanium disk, formed by the chemical etching, is anodized, thereby forming anodized film on the titanium disk.
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