公开(公告)号：US5089468A

公开(公告)日：1992-02-18

申请号：US501723

申请日：1990-03-28

申请人： Hitoshi Yoshida ,  Hitoshi Sakai ,  Shuichiro Oki ,  Keiichiro Watanabe ,  Manabu Yoshida ,  Toshio Oda

发明人： Hitoshi Yoshida ,  Hitoshi Sakai ,  Shuichiro Oki ,  Keiichiro Watanabe ,  Manabu Yoshida ,  Toshio Oda

IPC分类号： C04B35/45 ,  H01L39/24

CPC分类号： H01L39/2419 ,  C04B35/4521 ,  Y10S505/741 ,  Y10S505/742

摘要： The present process for producing a Bi-based superconducting oxide includes the steps of molding a material powder and subjecting the molded article to partial melting and then to crystallization in the presence of oxygen. In that case, the molded article is annealed, after the partial melting, to the crystallization temperature and subjected to crystallization at that temperature. Also, the article after the crystallization is cooled and the cooled article is heat-treated in an inert gas atmosphere. According to the above process, there can be obtained a Bi-based superconducting oxide having excellent superconducting properties.

公开(公告)号：US5030398A

公开(公告)日：1991-07-09

申请号：US320629

申请日：1989-03-08

申请人： Toshiyuki Hamanaka ,  Keiichiro Watanabe ,  Kunikazu Hamaguchi ,  Seiichi Asami

发明人： Toshiyuki Hamanaka ,  Keiichiro Watanabe ,  Kunikazu Hamaguchi ,  Seiichi Asami

IPC分类号： B01J21/14 ,  B01J35/04 ,  C04B35/195 ,  C04B38/00

CPC分类号： B01J35/04 ,  B01J21/14 ,  C04B35/195 ,  C04B38/0006 ,  Y10T428/24149

摘要： Cordierite honeycomb structural bodies having coefficients of thermal expansion of not more than 1.0x10.sup.-6, an improved thermal shock resistance, a very small leakage amount and an improved heat exchanging efficiency are provided by using very fine particles of kaolin and talc to restrict a total pore volume of a given pore diameter to a given range. The cordierite honeycomb structural bodies are useful in broader fields than conventional ones.

公开(公告)号：US4968648A

公开(公告)日：1990-11-06

申请号：US379676

申请日：1989-07-10

申请人： Keiichiro Watanabe ,  Tsuneaki Ohashi ,  Tadaaki Matsuhisa

发明人： Keiichiro Watanabe ,  Tsuneaki Ohashi ,  Tadaaki Matsuhisa

IPC分类号： C04B35/48

CPC分类号： C04B35/481

摘要： Heat-resisting phosphate based compound sintered bodies are disclosed, which each contain not less than 10% by weight of a crystalline phase of RZr.sub.4 (PO.sub.4).sub.6 in which R is an element in Group IIa of the Periodic Table. A weight-reduced percentage of the sintered body when being thermally treated at 1,400.degree. C. for 100 hours is not more than 10%. A process for producing such phosphate based compound sintered bodies is also disclosed.

摘要翻译： 公开了耐热磷酸盐系复合烧结体，其各自含有不少于10重量％的RZr4（PO4）6的结晶相，其中R为元素周期表IIa族元素。 当在1400℃下热处理100小时时，烧结体的重量减少百分比不大于10％。 还公开了一种生产这种磷酸盐基复合烧结体的方法。

公开(公告)号：US4923308A

公开(公告)日：1990-05-08

申请号：US334133

申请日：1989-04-06

申请人： Keiichiro Watanabe ,  Tadaaki Matsuhisa ,  Hiroaki Sakai

发明人： Keiichiro Watanabe ,  Tadaaki Matsuhisa ,  Hiroaki Sakai

IPC分类号： G01K11/00 ,  G01N23/225

CPC分类号： G01K11/003

摘要： A process for determining a relative temperature distribution at a surface of a high temperature member to be used in a gas containing oxygen at high temperatures is disclosed. The process comprises the step of determining the relative surface temperature distribution of the member by measuring concentrations of oxygen at the surface of the member, which surface is composed of silicon carbide or silicon nitride. The process may also include the step of quantitatively determining a distribution of temperatures at the surface of the member by measuring concentrations of oxygen at the surface of the member, determining a relationship between temperatures and concentrations of oxygen on a surface of a standard member, and comparing the measured oxygen concentrations at the surface of the member with those of a standard member with reference to this relationship.

摘要翻译： 公开了一种用于确定在高温下含氧气体中使用的高温部件表面的相对温度分布的方法。 该方法包括通过测量构件表面上的氧的浓度来确定构件的相对表面温度分布的步骤，该表面由碳化硅或氮化硅构成。 该方法还可以包括通过测量构件表面处的氧浓度，确定标准构件的表面上的温度和氧浓度之间的关系来定量地确定构件表面处的温度分布的步骤，以及 参考该关系将成员表面上测量的氧浓度与标准成分的氧浓度进行比较。

公开(公告)号：US4883781A

公开(公告)日：1989-11-28

申请号：US94743

申请日：1987-09-09

申请人： Keiichiro Watanabe ,  Tsuneaki Ohashi

发明人： Keiichiro Watanabe ,  Tsuneaki Ohashi

IPC分类号： C04B35/447 ,  C04B35/48

CPC分类号： C04B35/481 ,  C04B35/447

摘要： Heat resisting low expansion zirconyl phosphate-zircon composite bodies are disclosed, which contain zirconyl phosphate and zircon as a main crystalline phase and a secondary crystalline phase, respectively. The heat resisting low expansion zirconyl phosphate-zircon composite bodies have a coefficient of thermal expansion in a temperature range from room temperature to 1,400.degree. C. being not more than 30.times.10-7/.degree. C. and a melting point being not less than 1,600.degree. C. The composite bodies have a chemical composition essentially consisting of 58.2 to 65.4% by weight of ZrO.sub.2, 17.4 to 37.1% by weight of P.sub.2 O.sub.5, and 1.5 to 19.0% by weight of SiO.sub.2. The heat resisting low expansion zirconyl phosphate-zircon composite bodies optionally contain MgO and Al.sub.2 O.sub.3 in a total amount of not more than 2.5% by weight or 0.1 to 4% by weight of Nb.sub.2 O.sub.5. A process for producing such zirconyl phosphate-zircon composite bodies is also disclosed.

摘要翻译： 公开了耐热低膨胀性磷酸锆锆石复合体，其分别含有磷酸锆和锆石作为主结晶相和二次结晶相。 耐热低膨胀型磷酸锆锆锆复合体的体系在室温〜1400℃的温度范围内的热膨胀系数为30×10 -7 /℃以下，熔点为1600℃以上 复合体具有基本上由58.2至65.4重量％的ZrO 2，17.4至37.1重量％的P 2 O 5和1.5至19.0重量％的SiO 2组成的化学组成。 耐热低膨胀性磷酸锆锆锆复合体任意地含有MgO和Al 2 O 3，其总量不超过2.5重量％或0.1〜4重量％的Nb 2 O 5。 还公开了一种制备这种磷酸锆锆石复合体的方法。

公开(公告)号：US4772580A

公开(公告)日：1988-09-20

申请号：US936501

申请日：1986-12-01

申请人： Toshiyuki Hamanaka ,  Keiichiro Watanabe ,  Takashi Harada ,  Seiichi Asami

发明人： Toshiyuki Hamanaka ,  Keiichiro Watanabe ,  Takashi Harada ,  Seiichi Asami

IPC分类号： B01J35/04 ,  C04B35/195 ,  C04B38/00 ,  B01J32/00

CPC分类号： B01J35/04 ,  C04B35/195 ,  C04B38/0006 ,  Y10T428/24149

摘要： Catalyst carriers made of cordierite honeycomb structures having low thermal expansion, porosities of not exceeding 30%, high strengths and thin partition walls with high cell density or low cell density are provided by using very fine particles of kaoline and talc which are considered heretofore disadvantageous for producing such catalyst carriers. The catalyst carriers are useful in a broader use field than conventional ones, particularly as catalyst carriers for purifying exhaust gases exited from automobile engines.

摘要翻译： 通过使用非常细微的高岭土和滑石颗粒，提供了具有低热膨胀，孔隙率不超过30％，高强度和高细胞密度或细胞密度低的薄隔壁的催化剂载体，其被认为是不利于 生产这种催化剂载体。 催化剂载体在比现有技术更广泛的应用领域中是有用的，特别是作为用于净化从汽车发动机排出的废气的催化剂载体。

公开(公告)号：US4722916A

公开(公告)日：1988-02-02

申请号：US861703

申请日：1986-05-12

申请人： Keiichiro Watanabe ,  Tadaaki Matsuhisa

发明人： Keiichiro Watanabe ,  Tadaaki Matsuhisa

IPC分类号： C04B35/195 ,  C04B35/18 ,  C04B35/20

CPC分类号： C04B35/195

摘要： Cordierite series dense and low expansion ceramics have excellent thermal shock resistance property, being airtight, heat resistant and having high dimensional stability at high temperatures can be achieved by incorporating 2-10% by weight of P.sub.2 O.sub.5 in the cordierite ceramic and acid treating the fired or sintered body to selectively remove P.sub.2 O.sub.5 to primarily result in an amount of 0.1% by weight of P.sub.2 O.sub.5 remaining in the sintered body.

摘要翻译： 堇青石系列致密低膨胀陶瓷具有优异的耐热冲击性，气密性，耐热性和在高温下具有高尺寸稳定性可以通过在堇青石陶瓷中掺入2-10重量％的P2O5和酸处理烧制的或 烧结体，以选择性地除去P2O5，主要产生残留在烧结体中的量为0.1重量％的P 2 O 5。