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114 条记录 (耗时 0.029 秒)

    Colored low-expansion transparent glass ceramic
    81.
    发明授权
    Colored low-expansion transparent glass ceramic 失效
    彩色低膨胀透明玻璃陶瓷

    公开(公告)号：US5010041A

    公开(公告)日：1991-04-23

    申请号：US390771

    申请日：1989-08-08

    申请人： Akihiro Koyama ,  Keiji Kitamura ,  Nobuyuki Yamamoto

    发明人： Akihiro Koyama ,  Keiji Kitamura ,  Nobuyuki Yamamoto

    IPC分类号： C03C4/02 ,  C03C10/00 ,  C03C10/14

    CPC分类号： C03C10/0045 ,  C03C10/0027

    摘要： A colored low-expansion transparent glass ceramic comprising 100 parts by weight of a base glass (a) having the following composition, the following coloring components (b) and the following auxiliary coloring component (c) mixed thereto in the following ratio, and in that the principal crystalline phase is .beta.-quartz solid solution.(a) Base glass______________________________________ (weight %) ______________________________________ LiO.sub.2 3.5 to 5.5 Na.sub.2 O 0 to 4.0 K.sub.2 O 0 to 4.0 Na.sub.2 O + K.sub.2 O 0.5 to 4.0 MgO 0.1 to 3.0 Al.sub.2 O.sub.3 20.5 to 23.0 SiO.sub.2 60.0 to 68.5 TiO.sub.2 1.0 to 7.0 ZrO.sub.2 0 to 3.5 TiO.sub.2 + ZrO.sub.2 3.5 to 7.0 P.sub.2 O.sub.5 0 to 4.0 ______________________________________ (b) Coloring components______________________________________ (part by weight) ______________________________________ CoO 0 to 0.02 Cr.sub.2 O.sub.3 0 to 0.05 MoO.sub.3 0 to 0.04 NiO 0 to 0.075 ______________________________________ (c) Auxiliary coloring componentAt least one selected from the group consisting of______________________________________ (part of weight) ______________________________________ Cl 0 to 0.6 Br 0 to 0.4, and I 0 to 0.03 ______________________________________ The total amount of auxiliary component is 0.002 to 0.7 part by weight.In order to produce such glass ceramic, a raw material so prepared as to produce a glass ceramic having a composition comprising 100 parts by weight of the base glass (a) having the above-described composition, the coloring components (b) and the auxiliary coloring components (c) mixed thereto in the above-described ratio is melted and cooled and the thus-obtained glass ceramic is heat treated so as to form .beta.-quartz solid solution crystals as the principal crystalline phase.

    摘要翻译： 包含100重量份具有以下组成的基础玻璃（a）的着色低膨胀透明玻璃陶瓷，以下列比例混合以下着色组分（b）和以下辅助着色组分（c），并在 主晶相为β-石英固溶体。 （a）基础玻璃 - （重量％）-LiO2 3.5〜5.5 -Na2O 0〜4.0-K2O 0〜4.0 -Na2O + K2O 0.5〜4.0 -MgO 0.1〜3.0 -Al2O3 20.5〜23.0 -SiO2 60.0〜68.5 -TiO2 1.0 至7.0-ZrO 2至3.5 -TiO 2 + ZrO 2 3.5至7.0 -P 2 O 5 0至4.0 - （b）着色组分 - （重量份）-CoO 0至0.02 -Cr 2 O 3 0至0.05-MoO 3 0至0.04 -NiO 0至 0.075 - （c）辅助着色成分选自 - （重量份数）-Cl 0〜0.6 -Br 0〜0.4，-I 0〜0.03的至少一种 - 辅助成分的总量为0.002〜 0.7重量份。 为了制造这种玻璃陶瓷，制备如下制备的玻璃陶瓷的原料，该玻璃陶瓷的组成包含100重量份具有上述组成的基础玻璃（a），着色组分（b）和助剂 将以上述比例混合的着色组分（c）熔化并冷却，将由此得到的玻璃陶瓷进行热处理，形成作为主晶相的β-石英固溶体晶体。

    Electrolytic method for after-treatment of carbon fiber
    82.
    发明授权
    Electrolytic method for after-treatment of carbon fiber 失效
    电解碳纤维后处理方法

    公开(公告)号：US4867852A

    公开(公告)日：1989-09-19

    申请号：US204262

    申请日：1988-06-09

    申请人： Fujio Nakao ,  Nobuyuki Yamamoto ,  Katumi Anai

    发明人： Fujio Nakao ,  Nobuyuki Yamamoto ,  Katumi Anai

    IPC分类号： D01F11/12 ,  C25

    CPC分类号： D01F11/122

    摘要： A method for after-treatment of carbon fiber, which comprises by electrolytic oxidation treatment in an aqueous solution having an ammonium ion concentration of 0.2 to 4.0 mol/l and a pH of at least 7 using the carbon fiber as an anode, followed by treating the resulting fiber in water with an ultrasonic wave of at least 20 kHz frequency at an intensity satisfying the condition: ##EQU1## wherein, F is the frequency (kHz) and T is the treatment period (min) provided that T>0.1.

    摘要翻译： 一种碳纤维的后处理方法，其特征在于，使用碳纤维作为阳极，通过在0.2〜4.0mol / l的铵离子浓度和pH为7以上的水溶液中进行电解氧化处理， 所得到的纤维在水中具有至少20kHz频率的超声波，强度满足条件：其中，F是频率（kHz），T是处理周期（min），条件是T> 0.1。

    Process for producing carbon fiber
    83.
    发明授权
    Process for producing carbon fiber 失效
    碳纤维生产工艺

    公开(公告)号：US4780301A

    公开(公告)日：1988-10-25

    申请号：US66629

    申请日：1987-06-04

    申请人： Munetsugu Nakatani ,  Toha Kobayashi ,  Yoshitaka Imai ,  Nobuyuki Yamamoto ,  Susumu Sasaki

    发明人： Munetsugu Nakatani ,  Toha Kobayashi ,  Yoshitaka Imai ,  Nobuyuki Yamamoto ,  Susumu Sasaki

    IPC分类号： D01F9/22 ,  D01F9/32

    CPC分类号： D01F9/22 ,  D01F9/32

    摘要： The invention relates to a process for producing carbon fibers which comprises a continuous flame-resisting treatment of acrylic fibers in bundle form containing at least 90% by weight of acrylonitrile in an oxidizing atmosphere at temperatures of 250.degree. to 350.degree. C. by using a plurality of flame-resisting furnace different in heat treatment temperature under such conditions that the fiber density .rho.n after each stage of flame-resisting treatment may be maintained on the level defined by a specific conditional expression and so that the fiber density .rho.k after completion of the flame-resisting treatment may be from 1.34 to 1.40 g/ml, and successively are subjected to carbonizing treatment in an inert atmosphere.

    Magnetic recording medium
    85.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4687704A

    公开(公告)日：1987-08-18

    申请号：US819061

    申请日：1986-01-15

    申请人： Takahito Miyoshi ,  Akihiro Matsufuji ,  Nobuyuki Yamamoto ,  Hajime Miyatsuka ,  Masaaki Fujiyama

    发明人： Takahito Miyoshi ,  Akihiro Matsufuji ,  Nobuyuki Yamamoto ,  Hajime Miyatsuka ,  Masaaki Fujiyama

    IPC分类号： C09D5/23 ,  G11B5/708 ,  G11B5/714 ,  G11B5/68

    CPC分类号： G11B5/7085 ,  G11B5/714 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/257

    摘要： A magnetic recording medium such as a video tape comprising a magnetic recording layer which comprises a ferromagnetic metal powder having a specific surface area of not less than 42 m.sup.2 /g and an inorganic material powder having a Mohs' scale of hardness of not less than 5, wherein at least 90 wt. % of said inorganic material powder consists of particles having a particle size of 0.1-0.6 .mu.m, 51-85 wt. % of a portion of said particles consisting of particles having a particle size of less than 0.3 .mu.m, and the residual portion consisting of particles having a particle size of not less than 0.3 .mu.m.

    摘要翻译： 一种磁记录介质，例如包括磁记录层的磁记录介质，该磁记录层包括比表面积不小于42m 2 / g的铁磁金属粉末和莫氏硬度不小于5的无机材料粉末 ，其中至少90wt。 所述无机材料粉末的％由粒径为0.1-0.6μm的颗粒组成，51-85wt。 所述颗粒的一部分的一部分由颗粒尺寸小于0.3μm的颗粒组成，剩余部分由粒径不小于0.3μm的颗粒组成。