公开(公告)号：US06841265B2

公开(公告)日：2005-01-11

申请号：US10312701

申请日：2002-03-18

申请人： Hiroki Kurisu ,  Mitsuru Matsuura ,  Setsuo Yamamoto ,  Masaki Hesaka ,  Atsushi Takemura

发明人： Hiroki Kurisu ,  Mitsuru Matsuura ,  Setsuo Yamamoto ,  Masaki Hesaka ,  Atsushi Takemura

IPC分类号： B01J3/00 ,  B01J3/03 ,  C22C14/00 ,  C23C8/12 ,  C23C8/16 ,  C23C16/44 ,  B23P15/00

CPC分类号： C23C8/16 ,  C22C14/00 ,  Y10S428/923 ,  Y10T428/12993

摘要： The objective of the present invention is to provide a titanium alloy vacuum container and vacuum parts that can easily achieve an ultra-high vacuum in a short time through vacuum evacuation.The titanium alloy of the titanium alloy vacuum container and vacuum parts has a compact structure composed of fine grains, each having a size of approximately not more than 10 μm, with a surface that is exposed to at least vacuum being set to have a surface roughness of not more than 50 nm; and in this structure, preferably, the surface roughness thereof may be set to not more than 10 nm, the titanium alloy may have a hardness in a range of not less than 230 Hv to not more than 310 Hv, and the titanium alloy may have a passivity surface film made by a thin titanium oxide layer or nitride layer that is formed on the surface thereof. The titanium alloy, which is desirably used in such titanium alloy vacuum container and vacuum parts, contains 0.3 wt. % to 0.5 wt. % of iron and 0.3 wt. % to 0.5 wt. % of oxygen, and the remainder thereof is made from Ti obligatory impurities.

摘要翻译： 本发明的目的是提供一种钛合金真空容器和真空部件，其可以通过真空排气在短时间内容易地实现超高真空。钛合金真空容器和真空部件的钛合金具有紧凑的结构 由细颗粒组成，每个细颗粒具有大约不超过10μm的尺寸，其中至少暴露于真空的表面被设定为具有不大于50nm的表面粗糙度; 在该结构中，优选其表面粗糙度可以设定为不大于10nm，钛合金的硬度可以在230Hv以上且不高于310Hv的范围内，并且钛合金可以具有 由形成在其表面上的薄氧化钛层或氮化物层制成的无源表面膜。 希望用于这种钛合金真空容器和真空部件中的钛合金含有0.3wt。 ％至0.5wt。 铁含量为0.3％ ％至0.5wt。 的氧气，其余部分由Ti强制性杂质制成。

公开(公告)号：US06221519B1

公开(公告)日：2001-04-24

申请号：US09272622

申请日：1999-03-19

申请人： Takanori Doi ,  Kousaku Tamari ,  Yasuo Kakihara ,  Kenichi Nakata ,  Mitsuru Matsuura ,  Setsuo Yamamoto

发明人： Takanori Doi ,  Kousaku Tamari ,  Yasuo Kakihara ,  Kenichi Nakata ,  Mitsuru Matsuura ,  Setsuo Yamamoto

IPC分类号： G11B566

CPC分类号： G11B5/7325 ,  G11B5/656 ,  G11B5/84 ,  G11B5/8404 ,  Y10S428/90

摘要： A magnetic recording medium comprising: a plastic substrate; a nickel oxide underlayer formed on said substrate; and a cobalt-containing maghemite thin film formed on said nickel oxide underlayer, containing cobalt at a molar ratio of cobalt to iron of 0.01:1 to 0.1:1, and having either a spacing of a plane (311) of not more than 2.510 Å, a spacing of a plane (222) of not more than 2.415 Å or a spacing of a plane (220) of not more than 2.950 Å, a ratio value of an X-ray diffraction pattern peak intensity of either of the planes (311), (222) and (220) of said cobalt-containing maghemite thin film to an X-ray diffraction pattern peak intensity of the plane (400) thereof being more than 0.5. Such magnetic recording medium suitably applicable to existent magnetic recording systems using a ring-type magnetic head and capable of using a plastic substrate for providing a magnetic recording medium for high-density recording.

摘要翻译： 一种磁记录介质，包括：塑料基板;形成在所述基板上的氧化镍底层; 和在所述氧化镍底层上形成的含钴的磁赤铁矿薄膜，其含有钴与铁的摩尔比为0.01:1至0.1:1的钴，并且具有不大于2.510的平面（311）的间隔 ，平面（222）的间距不大于2.415或平面（220）的间距不大于2.950，任一平面（311）的X射线衍射图峰值强度的比值 ），所述含钴磁赤铁矿薄膜的（222）和（220）相对于所述平面（400）的X射线衍射图峰值强度大于0.5。 这种磁记录介质适用于使用环形磁头的现有磁记录系统，并能够使用塑料基板提供用于高密度记录的磁记录介质。

公开(公告)号：US06746786B2

公开(公告)日：2004-06-08

申请号：US09976296

申请日：2001-10-15

申请人： Teruaki Santoki ,  Yasuo Kakihara ,  Mitsuru Matsuura ,  Setsuo Yamamoto

发明人： Teruaki Santoki ,  Yasuo Kakihara ,  Mitsuru Matsuura ,  Setsuo Yamamoto

IPC分类号： G11B566

CPC分类号： G11B5/7325 ,  G11B5/656 ,  G11B5/851 ,  Y10S428/90

摘要： A magnetic recording medium, comprises a substrate; and a Co-containing spinel-type iron oxide thin film formed on the substrate, having a Co content of 1 to 20 mol % based on Fe, a coercive force value of not less than 159 kA/m (2,000 Oe), a thickness of 5 to 200 nm, a center line average height Ra of 0.1 to 0.8 nm and a maximum height (Rmax) of not more than 10 nm. The magnetic recording medium is capable of exhibiting a relatively high coercive force, especially a coercive force of not less than 159 kA/m (2,000 Oe) despite as small a film thickness as not more than 200 nm, and an excellent surface smoothness.

摘要翻译： 磁记录介质，包括基板; 和在该基板上形成的含Co尖晶石型氧化铁薄膜，Co含量为Fe为1〜20摩尔％，矫顽力值为159kA / m 2（2,000Oe）以上，厚度 为5〜200nm，中心线平均高度Ra为0.1〜0.8nm，最大高度（Rmax）为10nm以下。 尽管薄膜厚度不大于200nm，磁记录介质也能表现出相当高的矫顽力，特别是不低于159kA / m（2000Oe）的矫顽力，并具有优异的表面平滑度。

公开(公告)号：US06268024B1

公开(公告)日：2001-07-31

申请号：US09276520

申请日：1999-03-25

申请人： Takanori Doi ,  Kousaku Tamari ,  Yasuo Kakihara ,  Kenichi Nakata ,  Mitsuru Matsuura ,  Setsuo Yamamoto

发明人： Takanori Doi ,  Kousaku Tamari ,  Yasuo Kakihara ,  Kenichi Nakata ,  Mitsuru Matsuura ,  Setsuo Yamamoto

IPC分类号： H05H100

CPC分类号： G11B5/7325 ,  G11B5/656 ,  G11B5/84 ,  G11B5/8404

摘要： A magnetic recording medium is prepared by forming on a plastic substrate, a nickel oxide underlayer having a plane (200) which is predominantly oriented in parallel with the surface of the plastic substrate, then forming on the nickel oxide underlayer at a substrate temperature of less 240° C., a cobalt-containing magnetite thin film having a plane (400) which is predominantly oriented in parallel with the surface of the plastic substrate, and finally oxidizing the cobalt-containing magnetite thin film in a plasma-activated oxygen atmosphere containing a rare gas at a substrate temperature of less than 240° C. while incorporating the rare gas into oxygen. This results in a cobalt-containing maghemite thin film as a perpendicular magnetic film having a spacing of a plane (400) of not more than 2.082 Å. The magnetic recording medium so produced is useful for high-density recording using a plastic substrate.

摘要翻译： 通过在塑料基板上形成氧化镍底层制备磁记录介质，所述氧化镍底层具有主要与塑料基板的表面平行取向的平面（200），然后在较低的基板温度下在氧化镍底层上形成 240℃的含钴磁铁矿薄膜，其具有主要与塑料基板的表面平行取向的平面（400），最后在等离子体激活的氧气氛中氧化含钴磁铁矿薄膜，其中含有 在低于240℃的衬底温度下的稀有气体，同时将稀有气体并入氧气中。 这导致含有钴的磁赤铁矿薄膜作为垂直磁性膜，其平面（400）的间隔不大于2.082。 所制造的磁记录介质对于使用塑料基板的高密度记录是有用的。

公开(公告)号：US06187462B1

公开(公告)日：2001-02-13

申请号：US09272618

申请日：1999-03-19

申请人： Takanori Doi ,  Kousaku Tamari ,  Yasuo Kakihara ,  Kenichi Nakata ,  Mitsuru Matsuura ,  Setsuo Yamamoto

发明人： Takanori Doi ,  Kousaku Tamari ,  Yasuo Kakihara ,  Kenichi Nakata ,  Mitsuru Matsuura ,  Setsuo Yamamoto

IPC分类号： G11B566

CPC分类号： G11B5/656 ,  G11B5/84 ,  G11B5/851 ,  Y10S428/90

摘要： A magnetic recording medium of the present invention comprises: a plastic substrate; and a cobalt-containing maghemite thin film formed on said substrate, containing cobalt at a molar ratio of cobalt to iron of not more than 0.06:1, and having either a spacing of a plane (311) of not more than 2.510 Å, a spacing of a plane (222) of not more than 2.415 Å or a spacing of a plane (220) of not more than 2.950 Å; and has a coercive force of not less than 2,000 Oe. Such magnetic recording medium suitably applicable to existent magnetic recording systems using a ring-type magnetic head and capable of using a plastic substrate for providing a magnetic recording medium for high-density recording.

摘要翻译： 本发明的磁记录介质包括：塑料基板; 以及在所述基板上形成的含有钴与铁的摩尔比为0.06：1以下且具有不大于2.51的平面（311）间隔的钴的磁赤铁矿薄膜， 平面（222）的间距不大于2.415埃或平面（220）的间距不大于2.950埃; 并具有不低于2000 Oe的矫顽力。 这种磁记录介质适用于使用环形磁头的现有磁记录系统，并能够使用塑料基板提供用于高密度记录的磁记录介质。