公开(公告)号：US4774041A

公开(公告)日：1988-09-27

申请号：US704037

申请日：1985-02-21

申请人： Koji Tsukuma ,  Kuniyoshi Ueda ,  Takaaki Tsukidate

发明人： Koji Tsukuma ,  Kuniyoshi Ueda ,  Takaaki Tsukidate

IPC分类号： C04B35/488 ,  C04B35/645 ,  C04B35/48

CPC分类号： C04B35/6455 ,  C04B35/488 ,  C04B35/4885

摘要： A zirconia type sintered body consisting essentially of 50 to 98% by weight of zirconia (ZrO.sub.2) containing 1.5 to 5 mole % of yttria (Y.sub.2 O.sub.3) and 50 to 2% by weight of alumina (Al.sub.2 O.sub.3), spinal (MgAl.sub.2 O.sub.4) or mullite (3Al.sub.2 O.sub.3.2SiO.sub.2), and having a three-point bending strength of at least 1700 MPa is provided. This sintered body is prepared by a process wherein a powdery composition consisting essentially of 50 to 98% by weight of (a1) a powder of zirconia containing 1.5 to 5 mole % of yttria or (a2) a mixture comprising 1.5 to 5 mole % of yttria powder and 95 to 98.5 mole % of a zirconia powder and 2 to 50% by weight of (b) a powder of an alumina type oxide selected from alumina, and alumina-magnesia type oxide, an alumina-silica type oxide, a mixture of alumina and magnesia and a mixture of alumina and silica is subjected to a hot isotactic pressing treatment under a pressure of at least 50 MPa at temperature of 1300.degree. C. to 1700.degree. C. or a monoaxially compression-sintering treatment under a pressure of at least 20 MPa at a temperature of 1400.degree. C. to 1700.degree. C.

公开(公告)号：US4587225A

公开(公告)日：1986-05-06

申请号：US661968

申请日：1984-10-17

申请人： Koji Tsukuma ,  Kuniyoshi Ueda ,  Takaaki Tsukidate

发明人： Koji Tsukuma ,  Kuniyoshi Ueda ,  Takaaki Tsukidate

IPC分类号： C04B35/488 ,  C04B35/645 ,  C04B35/48

CPC分类号： C04B35/6455 ,  C04B35/488 ,  C04B35/4885

摘要： A zirconia type sintered body consisting essentially of 50 to 98% by weight of zirconia (ZrO.sub.2) containing 1.5 to 5 mole % of yttria (Y.sub.2 O.sub.3) and 50 to 2% by weight of alumina (Al.sub.2 O.sub.3), spinal (MgAl.sub.2 O.sub.4) or mullite (3Al.sub.2 O.sub.3.2SiO.sub.2), and having a three-point bending strength of at least 1700 MPa is provided. This sintered body is prepared by a process wherein a powdery composition consisting essentially of 50 to 98% by weight of (a1) a powder of zirconia containing 1.5 to 5 mole % of yttria or (a2) a mixture comprising 1.5 to 5 mole % of a yttria powder and 95 to 98.5 mole % of a zirconia powder and 2 to 50% by weight of (b) a powder of an alumina type oxide selected from alumina, an alumina-magnesia type oxide, an alumina-silica type oxide, a mixture of alumina and magnesia and a mixture of alumina and silica is subjected to a hot isotactic pressing treatment under a pressure of at lesast 50 MPa at temperature of 1300.degree. C. to 1700.degree. C. or a monoazially compression-sintering treatment under a pressure of at least 20 MPa at a temperature of 1400.degree. C. to 1700.degree. C.

摘要翻译： 氧化锆型烧结体，主要由50〜98重量％的含有1.5〜5摩尔％的氧化钇（Y 2 O 3）和50〜2重量％的氧化铝（Al 2 O 3），氧化锆（MgAl 2 O 4）或莫来石 3Al2O3.2SiO2），并具有至少1700MPa的三点弯曲强度。 该烧结体通过以下方法制备：粉末组合物，其主要由50〜98重量％（a1）含有1.5〜5摩尔％氧化钇的氧化锆粉末或（a2）含有1.5〜5摩尔％ 氧化钇粉末和95〜98.5摩尔％的氧化锆粉末和2〜50重量％的（b）氧化铝型氧化物粉末，选自氧化铝，氧化铝 - 氧化镁型氧化物，氧化铝 - 二氧化硅型氧化物， 氧化铝和氧化镁的混合物以及氧化铝和二氧化硅的混合物在1300℃至1700℃的温度下在50MPa的压力下进行热全同立构压制处理，或在压力下进行单相压缩烧结处理 在1400℃至1700℃的温度下为至少20MPa。

公开(公告)号：US4690910A

公开(公告)日：1987-09-01

申请号：US804956

申请日：1985-12-02

申请人： Koji Tsukuma ,  Takaaki Tsukidate

发明人： Koji Tsukuma ,  Takaaki Tsukidate

IPC分类号： B43L5/00 ,  C04B35/486 ,  C04B35/48 ,  C04B35/50

CPC分类号： C04B35/486

摘要： A sintered product of zirconia comprising ZrO.sub.2 and CeO.sub.2 in a molar ratio of CeO.sub.2 /ZrO.sub.2 of 8/92-30/70, and consisting of a crystal phase which is a mixed phase consisting essentially of a tetragonal phase and a cubic phase, or which is a phase consisting essentially of a tetragonal phase, has a high mechanical strength and a high rupture toughness, and is applicable as the constituting materials of tools for machining and cutting, various kinds of dies and nozzles, parts for sliding and other industrial materials.

摘要翻译： 或者由CeO 2 / ZrO 2的摩尔比为8/92〜30/70的ZrO 2和CeO 2的氧化锆烧结体构成，该结晶相是由四方相和立方相组成的混合相，或 是基本上由四方相组成的相，具有高的机械强度和高的断裂韧性，并且可用作用于加工和切割的工具的构成材料，各种模具和喷嘴，用于滑动的部件和其它工业材料。

公开(公告)号：US4666467A

公开(公告)日：1987-05-19

申请号：US719151

申请日：1985-04-02

申请人： Yoshihiro Matsumoto ,  Yoshitaka Kubota ,  Koji Tsukuma ,  Takaaki Tsukidate

发明人： Yoshihiro Matsumoto ,  Yoshitaka Kubota ,  Koji Tsukuma ,  Takaaki Tsukidate

IPC分类号： B21C3/02 ,  B26D1/00 ,  C04B35/488 ,  C04B35/645 ,  B24D3/02 ,  C04B35/48

CPC分类号： C04B35/4885 ,  B21C3/02 ,  B26D1/0006 ,  C04B35/488 ,  C04B35/6455 ,  B26D2001/002 ,  Y10T407/27

摘要： A high strength metal working tool such as cutting tools and dies made of a zirconia-base sintered material comprising 50 to 98 weight percent of zirconia (ZrO.sub.2) containing 1.5 to 5 mol percent of yttira (Y.sub.2 O.sub.3) and 50 to 2 weight percent of alumina (Al.sub.2 O.sub.3) and/or spinel (MgAl.sub.2 O.sub.4) and having a three point bending strength of not less than 1700 MPa.

摘要翻译： 一种高强度金属加工工具，例如由氧化锆基烧结材料制成的切削工具和模具，其包含50至98重量％的含有1.5-5摩尔％的钇（Y 2 O 3）的氧化锆（ZrO 2）和50至2重量％的氧化铝 （Al 2 O 3）和/或尖晶石（MgAl 2 O 4），并且具有不低于1700MPa的三点弯曲强度。

公开(公告)号：US09174877B2

公开(公告)日：2015-11-03

申请号：US13883151

申请日：2011-11-04

申请人： Shoichi Yamauchi ,  Isao Yamashita ,  Koji Tsukuma

发明人： Shoichi Yamauchi ,  Isao Yamashita ,  Koji Tsukuma

IPC分类号： C04B35/486 ,  C04B35/49 ,  C04B35/488 ,  C04B35/645

CPC分类号： C04B35/49 ,  C04B35/486 ,  C04B35/488 ,  C04B35/6455 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/3237 ,  C04B2235/3239 ,  C04B2235/3241 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/5409 ,  C04B2235/652 ,  C04B2235/656 ,  C04B2235/6565 ,  C04B2235/661 ,  C04B2235/663 ,  C04B2235/762 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/96 ,  C04B2235/963 ,  C04B2235/9653 ,  C04B2235/9661

摘要： A colored translucent zirconia sintered body contains a transition metal element as a coloring agent, having a clear color tone and high transparency, and being excellent in both design properties and esthetic properties, and its production process. A colored translucent zirconia sintered body includes yttria in an amount of at least 6 mol % and at most 15 mol % and at least one member selected from the group consisting of iron, nickel, manganese, cobalt, chromium, copper and vanadium in an amount of at least 0.02 mol % and at most 0.5 mol % as calculated as oxides, and having a porosity of at most 1,000 ppm. The average crystal grain size is preferably at most 60 μm.

摘要翻译： 彩色半透明氧化锆烧结体包含过渡金属元素作为着色剂，具有清晰的色调和高透明度，并且具有优异的设计性能和美学特性及其制备方法。 彩色半透明氧化锆烧结体包括量为至少6mol％且至多15mol％的氧化钇和至少一种选自铁，镍，锰，钴，铬，铜和钒中的一种，其量为 至少0.02mol％和至多0.5mol％，以氧化物计算，并且具有至多1,000ppm的孔隙率。 平均结晶粒径优选为60μm以下。

公开(公告)号：US08785008B2

公开(公告)日：2014-07-22

申请号：US12375001

申请日：2007-07-19

申请人： Isao Yamashita ,  Koji Tsukuma ,  Toru Tsuyoshi

发明人： Isao Yamashita ,  Koji Tsukuma ,  Toru Tsuyoshi

IPC分类号： C04B35/48 ,  C09K3/00 ,  A61C7/12 ,  A61C13/08

CPC分类号： C04B35/486 ,  A61C7/14 ,  A61C13/0022 ,  B82Y30/00 ,  C04B35/6455 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3222 ,  C04B2235/3225 ,  C04B2235/3246 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/3463 ,  C04B2235/5409 ,  C04B2235/5454 ,  C04B2235/549 ,  C04B2235/6021 ,  C04B2235/6022 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6567 ,  C04B2235/661 ,  C04B2235/72 ,  C04B2235/761 ,  C04B2235/762 ,  C04B2235/765 ,  C04B2235/77 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/96 ,  C04B2235/9653 ,  C04B2235/9661

摘要： The invention relates to the use of a sintered body obtained by subjecting a primary sintered body having a relative density of 95% or higher produced from a fine yttria-containing zirconia powder to HIP sintering at a temperature of 1,200-1,600° C. and a pressure of 50 MPa or higher. This sintered body is either a sintered body which has a total light transmittance, as measured at a thickness of 0.5 mm, of 43% or higher and a three-point bending strength of 1,700 MPa or higher or a zirconia sintered body which has a total light transmittance, as measured at a thickness of 1 mm, of 40% or higher and a three-point bending strength of 500 MPa or higher and which combines high strength and total light transmission.

摘要翻译： 本发明涉及一种烧结体的使用，所述烧结体通过使来自含氧化钇微细氧化锆粉末的微粒的相对密度为95％以上的一次烧结体在1200〜1600℃的温度下进行HIP烧结而得到， 压力为50MPa以上。 该烧结体是烧结体，其厚度为0.5mm，全部透光率为43％以上，三点弯曲强度为1700MPa以上，或氧化锆烧结体为总计 在1mm厚度下测量的透光率为40％以上，三点弯曲强度为500MPa以上，并且结合高强度和全光透射性。

公开(公告)号：US08722555B2

公开(公告)日：2014-05-13

申请号：US13320441

申请日：2010-06-03

申请人： Isao Yamashita ,  Masayuki Kudou ,  Koji Tsukuma

发明人： Isao Yamashita ,  Masayuki Kudou ,  Koji Tsukuma

IPC分类号： C04B35/486

CPC分类号： C04B35/49 ,  B82Y30/00 ,  C04B35/6455 ,  C04B2235/3201 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/3246 ,  C04B2235/3272 ,  C04B2235/5409 ,  C04B2235/5454 ,  C04B2235/549 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/663 ,  C04B2235/72 ,  C04B2235/762 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/79 ,  C04B2235/96 ,  C04B2235/9623 ,  C04B2235/9646 ,  C04B2235/9653 ,  C04B2235/9661 ,  G02B1/02

摘要： Translucent zirconia sintered bodies have had a problem that incorporation of titania improves translucency but lowers mechanical strength. The invention provides: a zirconia sintered body containing titanium oxide, the sintered body containing 6-15 mol % yttria and 3-20 mol % titania and having an in-line transmission of 50% or higher when examined at a sample thickness of 1 mm and a measuring wavelength of 600 nm; and a zirconia sintered body having especially high translucency which is a high-quality transparent zirconia sintered body that contains 3-20 mol % titania and 6-15 mol % yttria and has an in-line transmission, as measured at a wavelength of 600 nm, of 73% or higher and a haze value of 2.0% or less and that is highly translucent and is undimmed (cloudless). The invention further relates to a production process in which a powder having the composition is molded and thereafter subjected to ordinary-pressure primary sintering and hot isostatic pressing (HIP) under specific conditions.

摘要翻译： 半透明氧化锆烧结体具有二氧化钛的结合提高半透明度但降低机械强度的问题。 本发明提供：含有氧化钛的氧化锆烧结体，烧结体含有6-15摩尔％的氧化钇和3-20摩尔％的二氧化钛，当以1mm的样品厚度进行检查时，具有50％以上的在线透射率 测量波长为600nm; 和具有特别高的半透明度的氧化锆烧结体，其是含有3-20mol％二氧化钛和6-15mol％氧化钇的高质量透明氧化锆烧结体，并且具有在600nm波长下测量的在线透射率 ，73％以上，雾度值为2.0％以下，高度半透明，无光泽（无云）。 本发明还涉及一种制备方法，其中将具有该组合物的粉末模制，然后在特定条件下进行常压一次烧结和热等静压（HIP）。

公开(公告)号：US06405563B1

公开(公告)日：2002-06-18

申请号：US09942779

申请日：2001-08-31

申请人： Hiroya Nagata ,  Masayuki Kudo ,  Koji Tsukuma ,  Yoshikazu Kikuchi ,  Tomoyuki Akiyama

发明人： Hiroya Nagata ,  Masayuki Kudo ,  Koji Tsukuma ,  Yoshikazu Kikuchi ,  Tomoyuki Akiyama

IPC分类号： C03B1900

CPC分类号： C03C3/06 ,  C03B19/09 ,  C03C11/007 ,  C03C2201/24 ,  C03C2201/80 ,  C03C2203/10 ,  Y10S65/08 ,  Y10T428/1317 ,  Y10T428/249969

摘要： An opaque silica glass article comprising a transparent portion and an opaque portion, wherein the opaque portion has an apparent density of 1.70-2.15 g/cm3 and contains 5×104-5×106 bubbles per cm3, said bubbles having an average diameter of 10-100 &mgr;m; and the transparent portion has an apparent density of 2.19-2.21 g/cm3 and the amount of bubbles having a diameter of at least 100 &mgr;m in the transparent portion is not more than 1×103 per cm. The opaque silica glass article is made by a process wherein a mold is charged with a raw material for forming the opaque portion, which is a mixture comprising a silica powder with a small amount of a silicon nitride powder, and a raw material for forming the transparent portion so that the two raw materials are located in the positions corresponding to the opaque and the transparent portions, respectively, of the silica glass article to be produced; and the raw materials are heated in vacuo to be thereby vitrified.

摘要翻译： 一种不透明的玻璃制品，包括透明部分和不透明部分，其中不透明部分的表观密度为1.70-2.15g / cm 3，并且每立方厘米含有5×10 4〜5×10 6个气泡，所述气泡的平均直径为10〜100μm; 并且透明部分的表观密度为2.19-2.21g / cm 3，透明部分中直径至少为100μm的气泡量不超过1×10 3 / cm。 不透明的石英玻璃制品通过以下方法制造，其中模具装有用于形成不透明部分的原料，该不透明部分是包含少量氮化硅粉末的二氧化硅粉末的混合物，以及用于形成 透明部分，使得两个原料分别位于与待制造的石英玻璃制品的不透明部分和透明部分相对应的位置; 并将原料真空加热，从而玻璃化。

公开(公告)号：US5972488A

公开(公告)日：1999-10-26

申请号：US887967

申请日：1997-07-03

申请人： Hiroya Nagata ,  Koji Tsukuma ,  Masayuki Kudo

发明人： Hiroya Nagata ,  Koji Tsukuma ,  Masayuki Kudo

IPC分类号： C03B19/09 ,  C03C3/06 ,  C03C11/00 ,  B32B17/00

CPC分类号： C03C11/007 ,  C03B19/09 ,  C03C3/06 ,  C03C2201/80 ,  C03C2203/10 ,  Y10T428/249953 ,  Y10T428/249969 ,  Y10T428/2975

摘要： Opaque quartz glass is provided which contains gas bubbles uniformly dispersed therein and is excellent in high-temperature viscosity and heat-insulating property. The opaque quartz glass has a defined apparent density, contains bubbles having a defined average bubble diameter in a defined amount, has a defined total bubble sectional area, generally exhibits a defined linear transmittance at a thickness of 1 mm or larger to projected light of a defined wavelength and contains nitrogen in a defined concentration. The opaque quartz glass is produced by a process comprising packing into a mold a powdery source material of powdery silica having a defined average particle diameter and powdery silicon nitride dispersed therein in a defined amount, heating the powdery source material to one of two first defined temperature ranges (both under vacuum) and further heating the source material up to a second temperature higher than the melting point and not higher than 1900.degree. C. in a vacuum or an inert gas atmosphere for vitrification and bubble formation.

摘要翻译： 提供了不透明石英玻璃，其包含均匀分散在其中的气泡，并且具有优异的高温粘度和绝热性能。 不透明石英玻璃具有限定的表观密度，包含具有确定的具有确定的平均气泡直径的气泡，具有确定的总气泡截面面积，通常在1mm以上的厚度下呈现出规定的线性透射率， 并含有规定浓度的氮。 不透明石英玻璃是通过一种方法生产的，该方法包括将具有确定的平均粒径的粉末二氧化硅的粉状源材料和分散在其中的粉末状氮化硅以规定的量包装在模具中，将粉末源材料加热至两个第一限定温度 范围（均为真空），并在真空或惰性气体气氛中将源材料进一步加热至高于熔点且不高于1900℃的第二温度，用于玻璃化和气泡形成。

公开(公告)号：US20130037763A1

公开(公告)日：2013-02-14

申请号：US13583370

申请日：2011-03-04

申请人： Koji Tsukuma

发明人： Koji Tsukuma

IPC分类号： G02B5/23 ,  C04B35/01

CPC分类号： C04B35/486 ,  B82Y30/00 ,  C04B35/6455 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/3244 ,  C04B2235/3246 ,  C04B2235/3275 ,  C04B2235/5409 ,  C04B2235/5454 ,  C04B2235/549 ,  C04B2235/604 ,  C04B2235/6562 ,  C04B2235/661 ,  C04B2235/662 ,  C04B2235/762 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/94 ,  C04B2235/963 ,  C04B2235/9653 ,  C04B2235/9661

摘要： An object of the present invention is to provide a colored translucent zirconia sintered body having red color and high translucency. The present invention relates to a zirconia sintered body, characterized by containing 6 to 30 mo % of yttria and 0.1 to 5 mol % of cerium oxide in terms of CeO2, the cerium oxide containing an oxide of trivalent cerium. The zirconia sintered body of the present invention has, in addition of high hardness, diamond luster based on high refractive index inherent in zirconia, deep red color and transparency.

摘要翻译： 本发明的目的是提供一种具有红色和高半透明度的着色半透明氧化锆烧结体。 氧化锆烧结体技术领域本发明涉及一种氧化锆烧结体，其特征在于，含有6〜30摩尔％的氧化钇和0.1〜5摩尔％的氧化铈（以CeO 2计），所述氧化铈含有三价铈的氧化物。 本发明的氧化锆烧结体除了高硬度之外，还具有基于氧化锆固有的高折射率的金刚石光泽，深红色和透明度。