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1. 发明授权

US4521358A Process for the production of silicon nitride sintered bodies 失效
标题翻译：制造氮化硅烧结体的方法
公开(公告)号：US4521358A
公开(公告)日：1985-06-04
申请号：US521283
申请日：1983-08-08
申请人： Kazunori Miura , Yoshinori Hattori , Yasushi Matsuo
发明人： Kazunori Miura , Yoshinori Hattori , Yasushi Matsuo
IPC分类号： C04B35/591 , C04B35/593 , F02B3/06 , C04B35/58
CPC分类号： C04B35/593 , C04B35/591 , F02B3/06
摘要： Processes for the production of a silicon nitride sintered body are disclosed. One process comprises molding a mixed powder of 100 parts by weight of metallic silicon with a maximum particle size of 20 .mu.m or less and 0.2 to 2 parts by weight (calculated as chromium oxide) of a chromium component and, thereafter, reaction sintering the mold in a nitrogen gas or in a non-oxidizing atmosphere containing nitrogen gas at a temperature of 1,300.degree. to 1,500.degree. C. This invention provides further process which comprises molding a mixed powder of 100 parts by weight of metallic silicon with a maximum particle size of 20 .mu.m or less, 0.2 to 1 part by weight (calculated as chromium oxide) of a chromium component, and further 10 to 20 parts by weight of an oxide component of one or more of the oxides of yttrium, lanthanum, cerium, gadolinium, and erbium, reaction sintering the above-prepared mold, and thereafter, hot pressing the reaction sintered body. This silicon nitride hot pressed body is superior in oxidation resistance, and moreover is of high density and has high mechanical strength. Thus it is suitable for use as, e.g., gas turbine parts of diesel engine parts.
摘要翻译：公开了制造氮化硅烧结体的方法。一种方法包括：将100重量份最大粒度为20μm或更小的金属硅和0.2至2重量份（以铬氧化物计）的铬组分的混合粉末模塑，然后将在氮气中或在含有氮气的非氧化性气氛中在1300〜1500℃的温度下成型。本发明提供了进一步的方法，其包括将最大粒径为100重量份的金属硅的混合粉末 20μm以下，0.2〜1重量份（以氧化铬计算）的铬成分，还含有10〜20重量份的氧化物成分，一种或多种钇，镧，铈，钆和铒，对上述制备的模具进行反应烧结，然后热压该反应烧结体。该氮化硅热压体的耐氧化性优异，而且密度高，机械强度高。因此，它适用于例如柴油发动机部件的燃气轮机部件。

2. 发明授权

US4499192A Silicon nitride sintered products having high corrosion resistance and process for production thereof 失效
标题翻译：具有高耐蚀性的氮化硅烧结体及其制造方法
公开(公告)号：US4499192A
公开(公告)日：1985-02-12
申请号：US444119
申请日：1982-11-24
申请人： Toru Shimamori , Yoshinori Hattori , Yasushi Matsuo
发明人： Toru Shimamori , Yoshinori Hattori , Yasushi Matsuo
IPC分类号： C04B35/584 , C04B35/593 , C04B35/58
CPC分类号： C04B35/593 , C04B35/584
摘要： A silicon nitride sintered product and processes for the production thereof are described, wherein the product comprises from 75 to 97.9% by weight of silicon nitride, from 2 to 20% by weight of yttrium oxide and cerium oxide in a molar ratio of cerium oxide to yttrium oxide of 0.4/1 to 4/1, and from 0.1 to 8% by weight of aluminum oxide.
摘要翻译：描述了一种氮化硅烧结产品及其生产方法，其中该产品包含75至97.9重量％的氮化硅，2至20重量％的氧化钇和氧化铈，氧化铈与氧化钇为0.4 / 1至4/1，和0.1至8重量％的氧化铝。

3. 发明授权

US4440707A Process for producing silicon nitride sintered products having high toughness 失效
标题翻译：具有高韧性的氮化硅烧结体的制造方法
公开(公告)号：US4440707A
公开(公告)日：1984-04-03
申请号：US428507
申请日：1982-09-29
申请人： Toru Shimamori , Yoshinori Hattori , Yasushi Matsuo
发明人： Toru Shimamori , Yoshinori Hattori , Yasushi Matsuo
IPC分类号： C04B35/591 , C04B35/584 , C04B35/593 , C04B35/38
CPC分类号： C04B35/593 , C04B35/584
摘要： A process for producing a silicon nitride sintered product having high toughness is described, comprising blending from 97 to 57% by weight of metallic silicon powder having a maximum particle size of 25 .mu.m or less with from 1 to 15% by weight, calculated as TiN, of a TiN powder having a maximum particle size of 20 .mu.m or less or a powder of titanium component capable of changing into TiN during reaction sintering, and from 2 to 28% by weight of one or more components selected from the group consisting of AlN, Al.sub.2 O.sub.3, SiO.sub.2 and oxides of rare earth elements, molding the resulting mixture, carrying out reaction sintering in a nonoxidizing atmosphere of a nitrogen gas or a nitrogen-containing mixed gas, and thereafter resintering in the same atmosphere at a temperature of from 1,600.degree. C. to 2,200.degree. C.
摘要翻译：描述了一种制造具有高韧性的氮化硅烧结产品的方法，其包括将97至57重量％的最大粒度为25μm或更小的金属硅粉末与1至15重量％混合，计算为 TiN，其具有最大粒度为20μm以下的TiN粉末或能够在反应烧结时变为TiN的钛成分的粉末，以及2〜28重量％的选自以下的组分中的一种或多种：的AlN，Al2O3，SiO2和稀土元素的氧化物，将所得混合物成型，在氮气或含氮混合气体的非氧化气氛中进行反应烧结，然后在相同的气氛中在 1600〜2200℃

4. 发明授权

US4304576A Silicon nitride ceramic tools and a process for their production 失效
标题翻译：氮化硅陶瓷工具及其生产工艺
公开(公告)号：US4304576A
公开(公告)日：1981-12-08
申请号：US91662
申请日：1979-11-05
申请人： Yoshinori Hattori , Masayuki Akatsuka , Yasushi Matsuo , Isamu Fukuura
发明人： Yoshinori Hattori , Masayuki Akatsuka , Yasushi Matsuo , Isamu Fukuura
IPC分类号： C04B35/584 , B24D3/14 , C04B35/593 , B24D3/02 , C04B31/16
CPC分类号： C04B35/593 , B24D3/14 , Y10T407/27
摘要： A silicon nitride based ceramic tool is disclosed which is prepared from the starting powder compositions surrounded by and including the lines defined by the points A, B, and C and preferably D, E, and F in the FIGURE.
摘要翻译：公开了一种氮化硅基陶瓷工具，其从由图A中的点A，B和C以及优选地D，E和F限定的线包围并包括线的起始粉末组合物制备。

5. 发明授权

US4216021A High strength silicon nitride sintered material 失效
标题翻译：高强度氮化硅烧结材料
公开(公告)号：US4216021A
公开(公告)日：1980-08-05
申请号：US035970
申请日：1979-05-04
申请人： Yoshinori Hattori , Yasushi Matsuo
发明人： Yoshinori Hattori , Yasushi Matsuo
IPC分类号： C22C29/16 , C04B35/584 , C04B35/597 , C04B35/58
CPC分类号： C04B35/597 , C04B35/584
摘要： A high strength silicon nitride sintered material having a modulus of rupture of about 100 kg/mm.sup.2 or more, which is prepared by sintering a mixture of about 88.7 to 98% by weight of silicon nitride (Si.sub.3 N.sub.4) and the balance a sintering aid comprising Al.sub.2 O.sub.3, Y.sub.2 O.sub.3 and Ti present in the following proportions based on weight: ##EQU1##
摘要翻译：通过烧结约88.7-98重量％的氮化硅（Si 3 N 4）的混合物制备的具有约100kg / mm 2或更高的断裂模量的高强度氮化硅烧结材料，其余为包含Al 2 O 3的烧结助剂，Y 2 O 3和Ti以以下重量比例存在：

6. 发明授权

US4511402A Sintered silicon nitride products and processes for fabrication thereof 失效
标题翻译：烧结氮化硅产品及其制造方法
公开(公告)号：US4511402A
公开(公告)日：1985-04-16
申请号：US640541
申请日：1984-08-14
申请人： Kazunori Miura , Yoshinori Hattori , Yasushi Matsuo
发明人： Kazunori Miura , Yoshinori Hattori , Yasushi Matsuo
IPC分类号： C04B35/584 , C04B35/591 , C04B35/593 , C22C29/00
CPC分类号： C04B35/584 , C04B35/593
摘要： A sintered silicon nitride products and processes for the fabrication thereof are described, wherein the product comprises from 60 to 98.9% by weight of silicon nitride, from 0.1 to 15% by weight of one or more chromium components selected from metal chromium, chromium oxide, and chromium nitride, and from 1 to 25% by weight of one or more oxides selected from oxides of rare earth elements, scandium oxide, yttrium oxide, aluminum oxide, zirconium oxide and silicon dioxide.
摘要翻译：描述了一种烧结氮化硅产品及其制造方法，其中该产品包含60至98.9重量％的氮化硅，0.1至15重量％的一种或多种选自金属铬，氧化铬，和氮化铬，以及1至25重量％的选自稀土元素氧化物，氧化钪，氧化钇，氧化铝，氧化锆和二氧化硅的一种或多种氧化物。

7. 发明授权

US4248813A Process for producing high density sintered products 失效
标题翻译：生产高密度烧结产品的方法
公开(公告)号：US4248813A
公开(公告)日：1981-02-03
申请号：US60696
申请日：1979-07-25
申请人： Yoshinori Hattori , Mitsuyoshi Kawamura , Yasushi Matsuo
发明人： Yoshinori Hattori , Mitsuyoshi Kawamura , Yasushi Matsuo
IPC分类号： B22F3/04 , B22F3/10 , B22F3/12 , B22F3/22 , C04B35/591 , C04B35/634 , C04B35/64 , F01D5/28 , C04B33/34
CPC分类号： B22F3/225 , B22F3/1017 , B22F3/1233 , C04B35/591 , C04B35/634 , C04B35/63408 , C04B35/63424 , F01D5/28 , B22F2998/00 , B22F2998/10 , Y02T50/672
摘要： A process for producing high density sintered product which comprises molding a composite of an inorganic powder and an organic resin, burning off the organic resin, coating the surface of the molding with a rubber film, pressing said moldings under 2 ton/cm.sup.2 or more of isostatic pressure, and sintering.
摘要翻译：一种生产高密度烧结产品的方法，包括将无机粉末和有机树脂的复合材料成型，烧掉有机树脂，用橡胶膜涂覆成型体的表面，将所述模制品按2吨/ cm2以上等压压力和烧结。

8. 发明授权

US4626517A High toughness sintered bodies 失效
标题翻译：高韧性烧结体
公开(公告)号：US4626517A
公开(公告)日：1986-12-02
申请号：US701646
申请日：1985-02-14
申请人： Masakazu Watanabe , Satoshi Iio , Yasushi Matsuo
发明人： Masakazu Watanabe , Satoshi Iio , Yasushi Matsuo
IPC分类号： C04B35/119 , C04B35/486 , C04B35/488 , C04B35/58 , C04B35/48
CPC分类号： C04B35/58014 , C04B35/119 , C04B35/486 , C04B35/488 , C04B35/4885 , C04B2235/666
摘要： A high toughness sintered body is described, consisting essentially of from 40 to 99.5% by weight of Component A, and 0.5 to 60% by weight of Component B, wherein the mean grain size of the sintered body is 3 microns or less, and Components A and B are as follows:Component A: ZrO.sub.2 containing a stabilizer, such as Y.sub.2 O.sub.3, CaO, and MgO, in which the fraction of the tetragonal and cubic ZrO.sub.2 constitutes at least 90% by weight, and the ratio of the tetragonal ZrO.sub.2 to the cubic ZrO.sub.2 is at least 1/3; andComponent B: at least one of Al.sub.2 O.sub.3 and TiN, with impurities being 3% by weight or less of SiO.sub.2, 0.5% by weight or less of Fe.sub.2 O.sub.3, and 0.5% by weight or less of TiO.sub.2, provided that the total amount is 3% by weight or less.
摘要翻译：描述了高韧性烧结体，其基本上由组分A的40至99.5重量％和组分B的0.5至60重量％组成，其中烧结体的平均晶粒尺寸为3微米或更小，并且组分 A和B如下：组分A：含有稳定剂如ZrO 2，CaO和MgO的ZrO 2，其中四方晶和立方ZrO 2的分数占至少90重量％，四方晶ZrO 2与立方ZrO 2至少为1/3; 和组分B：Al 2 O 3和TiN中的至少一种，杂质为3重量％以下的SiO 2，0.5重量％以下的Fe 2 O 3和0.5重量％以下的TiO 2，前提条件是总量为3 重量％以下。

9. 发明授权

US4336216A Process for producing silicon carbide heating elements 失效
标题翻译：生产碳化硅加热元件的方法
公开(公告)号：US4336216A
公开(公告)日：1982-06-22
申请号：US157738
申请日：1980-06-09
申请人： Masakazu Watanabe , Akiyasu Okuno , Yasushi Matsuo
发明人： Masakazu Watanabe , Akiyasu Okuno , Yasushi Matsuo
IPC分类号： C04B35/565 , H05B3/14 , C04B35/56
CPC分类号： C04B35/565
摘要： A process for producing silicon carbide heating elements is described comprising:a primary sintering wherein a mixture including SiC powder, boron or a boron compound, and carbon or a carbon compound in specific proportions, is molded and sintered to obtain a sintered product having from 70 to 95% of the theoretical density; anda secondary sintering wherein the sintered product obtained in the primary sintering is further sintered at each temperature from 1,600.degree. C. to 2,200.degree. C. to obtain a sintered product having a density of at least 80% of the theoretical density and a specific resistivity of not more than 1.0 .OMEGA.-cm.
摘要翻译：描述了一种生产碳化硅加热元件的方法，其包括：一次烧结，其中将包含SiC粉末，硼或硼化合物的混合物以及特定比例的碳或碳化合物模塑并烧结，得到具有70 至95％的理论密度; 和二次烧结，其中在一次烧结中获得的烧结产品在每个温度从1600℃至2200℃进一步烧结，以获得密度为理论密度的至少80％的密度和比电阻率的烧结产品不超过1.0欧米伽-cm。

10. 发明授权

US4626518A Method for manufacturing high toughness sintered bodies 失效
标题翻译：制造高韧性烧结体的方法
公开(公告)号：US4626518A
公开(公告)日：1986-12-02
申请号：US610459
申请日：1984-07-11
申请人： Masakazu Watanabe , Satoshi Iio , Yasushi Matsuo
发明人： Masakazu Watanabe , Satoshi Iio , Yasushi Matsuo
IPC分类号： C04B35/119 , C04B35/486 , C04B35/488 , C04B35/58 , C04B35/48 , C04B35/10
CPC分类号： C04B35/58014 , C04B35/119 , C04B35/486 , C04B35/488 , C04B35/4885 , C04B2235/666
摘要： A method for manufacture of a high toughness sintered body, characterized by sintering a shaped body of a mixed powder consisting essentially of from 40 to 70% by weight of a first component of powdered ZrO.sub.2 containing at least one stabilizer selected from the group consisting of Y.sub.2 O.sub.3, CaO, and MgO and having an average particle diameter of not more than 1.mu. and from 30 to 60% by weight of a second component of powdered .alpha.-Al.sub.2 O.sub.3 having an average particle diameter of not more than 1 .mu.m, which mixed powder may also contain not more than 3% by weight of SiO.sub.2, not more than 0.5% by weight of Fe.sub.2 O.sub.3, or not more than 0.5% by weight of TiO.sub.2 in a combined proportion of not more than 3% by weight at a temperature in the range of from 1400.degree. C. to 1600.degree. C. under normal pressure thereby producing a sintered body wherein at least 90% by weight of ZrO.sub.2 particles present therein are accounted for by tetragonal and cubic crystals, the ratio of said tetragonal crystals to said cubic crystals is at least 1:3, and the average crystal particle diameter of the entire sintered body is at least 3.mu..
摘要翻译：一种制造高韧性烧结体的方法，其特征在于，烧结混合粉末的成形体，所述混合粉末主要由40至70重量％的含有至少一种选自Y 2 O 3的稳定剂的粉末状ZrO 2的第一组分组成， CaO，MgO，平均粒径为1μm以下，平均粒径为1μm以下的粉末状α-Al2O3粉末的第二成分的平均粒径为1〜30重量％，混合粉末还可以含有不超过3重量％的SiO 2，不超过0.5重量％的Fe 2 O 3，或不超过0.5重量％的TiO 2，其组合比例不超过3重量％范围在常压下为1400℃至1600℃，从而生产烧结体，其中存在至少90重量％的存在于其中的ZrO 2颗粒为四方晶体和立方晶体，所述四方晶体与所述立方晶体的比率结晶 Als至少为1：3，整个烧结体的平均晶粒直径至少为3微米。

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