公开(公告)号：US4365022A

公开(公告)日：1982-12-21

申请号：US317542

申请日：1981-11-02

申请人： Hideyo Tabata ,  Yoshitaka Kuwahara ,  Michihide Machida ,  Shyoichi Kume ,  Takeo Iga ,  Kazuo Saitoh ,  Shinji Tomura

发明人： Hideyo Tabata ,  Yoshitaka Kuwahara ,  Michihide Machida ,  Shyoichi Kume ,  Takeo Iga ,  Kazuo Saitoh ,  Shinji Tomura

IPC分类号： C04B35/584 ,  C04B35/593 ,  C04B35/597 ,  C04B35/58

CPC分类号： C04B35/584 ,  C04B35/593 ,  C04B35/597

摘要： A high-strength sintered article of chemical substances having the .beta.-silicon nitride type crystal structure is produced by blending 50 to 99.9 weight percent of a .beta.-silicon nitride and/or .beta.'-Sialon and 50 to 0.1 weight percent of a mixture, as a sintering aid, consisting of BeO, Ga.sub.2 O.sub.3, and Al.sub.2 O.sub.3 in respective amounts such as to have a Ga.sub.2 O.sub.3 /BeO ratio in the range of from 2.8 to 9.4, an Al.sub.2 O.sub.3 /BeO ratio in the range of from 0.0 to 2.6, and an Al.sub.2 O.sub.3 /Ga.sub.2 O.sub.3 ratio in the range of from 0.0 to 1.1, all ratios being ratios by weight and sintering the resultant blend.

摘要翻译： 通过混合50-99.9重量％的β-氮化硅和/或β'-Sialon和50至0.1重量％的混合物来生产具有β-氮化硅型晶体结构的化学物质的高强度烧结制品， 作为烧结助剂，由BeO，Ga 2 O 3和Al 2 O 3组成，各自的量可以使得Ga 2 O 3 / BeO比在2.8〜9.4的范围内，Al 2 O 3 / BeO比在0.0〜2.6的范围内， Al 2 O 3 / Ga 2 O 3的比例在0.0至1.1的范围内，所有比例均为重量比，并烧结所得共混物。

公开(公告)号：US4975394A

公开(公告)日：1990-12-04

申请号：US187131

申请日：1988-04-28

申请人： Shuzo Kanzaki ,  Masayoshi Ohashi ,  Hideyo Tabata ,  Osami Abe ,  Tooru Shimamori ,  Koichi Moori

发明人： Shuzo Kanzaki ,  Masayoshi Ohashi ,  Hideyo Tabata ,  Osami Abe ,  Tooru Shimamori ,  Koichi Moori

IPC分类号： C04B35/584 ,  C04B35/597

CPC分类号： C04B35/597

摘要： A sintered silicon oxynitride composition comprises as an amount of starting material the combination of (a) a silicon component comprising silicon nitride(Si.sub.3 N.sub.4) and silicon oxide(SiO.sub.2) in a mol ratio of SiO.sub.2 /Si.sub.3 N.sub.4 being 0.7 to 1.2, and (b) at least one second component selected from an aluminum oxide, an aluminum nitride, a rare earth oxide, and a rare earth nitride, said second component being in an amount of from about 0.1 to 10 mol per 100 mol of said silicon component.

摘要翻译： 烧结氮氧化硅组合物包含（a）以SiO 2 / Si 3 N 4的摩尔比为0.7至1.2的包含氮化硅（Si 3 N 4）和氧化硅（SiO 2）的硅组分的组合的起始材料的量，和（b） 至少一种选自氧化铝，氮化铝，稀土氧化物和稀土氮化物的第二组分，所述第二组分的量为每100摩尔所述硅组分约0.1-10摩尔。

公开(公告)号：US5650007A

公开(公告)日：1997-07-22

申请号：US612804

申请日：1996-03-11

申请人： Shoji Kawakami ,  Hideyo Tabata ,  Toyoaki Yamada ,  Shunsaku Sakakibara

发明人： Shoji Kawakami ,  Hideyo Tabata ,  Toyoaki Yamada ,  Shunsaku Sakakibara

IPC分类号： C30B21/00 ,  C30B21/04 ,  C30B29/26 ,  C30B29/62

CPC分类号： C30B21/04

摘要： Spinel single crystal filaments are produced by a method which consists essentially of solidifying in one direction a melt consisting essentially of 30 to 70% by weight of magnesium oxide, 10 to 45% by weight of aluminum oxide, and 15 to 45% by weight of silicon dioxide, thereby forming a composite texture containing a matrix of forsterite and filaments of spinel dispersed in the matrix, and then separating the filaments of spinel from the composite texture.

摘要翻译： 尖晶石单晶长丝是通过一种方法生产的，该方法主要包括在一个方向上固化基本上由30至70重量％的氧化镁，10至45重量％的氧化铝和15至45重量％的氧化铝组成的熔体， 从而形成包含分散在基质中的尖晶石的镁橄榄石和长丝的基质的复合结构，然后从复合结构中分离出尖晶石的长丝。

公开(公告)号：US4895814A

公开(公告)日：1990-01-23

申请号：US66697

申请日：1987-06-24

申请人： Shuzo Kanzaki ,  Hideyo Tabata ,  Osami Abe ,  Ohta Shigetoshi ,  Yamagishi Chitake ,  Mitachi Senshu

发明人： Shuzo Kanzaki ,  Hideyo Tabata ,  Osami Abe ,  Ohta Shigetoshi ,  Yamagishi Chitake ,  Mitachi Senshu

IPC分类号： C04B35/18

CPC分类号： C04B35/18

摘要： An alumina silica sintered ceramic that is produced by the normal sintering method and which has bending strength of at least 300 MPa at room temperature and at least 400 MPa at an elevated temperature, for example, 1,300.degree. C. is disclosed.This sintered ceramic is produced by a process comprising the following steps: providing a chiefly amorphous starting powder that consists of 62-73 wt % Al.sub.2 O.sub.3 and correspondingly 38-27 wt % SiO.sub.2 ; calcining this starting powder to make a calcined product that is chiefly composed of a crystalline phase and which contains oxides of an alkali metal and an alkaline earth metal in a total amount of no more than 1,500 ppm; pressing the ground particles of the calcined product into a compact; and sintering the compact at 1,500.degree.-1,750.degree. C. and at atmospheric pressure.

摘要翻译： 公开了通过常规烧结法生产的氧化铝二氧化硅烧结陶瓷，其在室温下的弯曲强度至少为300MPa，在高温例如1300℃下具有至少400MPa的弯曲强度。 该烧结陶瓷通过包括以下步骤的方法制备：提供由62-73重量％Al 2 O 3和相应地38-27重量％SiO 2组成的主要无定形起始粉末; 煅烧该起始粉末以制备主要由结晶相组成并且含有不超过1,500ppm的碱金属和碱土金属的氧化物的煅烧产物; 将煅烧产物的研磨颗粒压制成压实体; 并在1,500°-1,750℃和大气压下烧结该压块。