会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Method for producing high density sintered silicon nitride(Si.sub.3 N.sub.4
)
    • 生产高密度烧结氮化硅(Si3N4)的方法
    • US5665291A
    • 1997-09-09
    • US463273
    • 1995-06-05
    • Katuhiko HonmaTsuneo TatsunoHiroshi OkadaMasato MoritokiTakao Fujikawa
    • Katuhiko HonmaTsuneo TatsunoHiroshi OkadaMasato MoritokiTakao Fujikawa
    • C04B35/593C04B35/584
    • C04B35/593C04B35/5935
    • The specification describes a method for producing high density sintered silicon nitride (Si.sub.3 N.sub.4) having a relative density of at least 98%. In a first step, silicon nitride powder is compacted into a desired shape. It is then pre-sintered in a second step, generally, under normal pressure to obtain a presintered body having a relative density of at least 92%. In a third step, the presintered body is subjected to a hot isostatic pressing (HIP) in an inert gas atmosphere of 1500.degree.-2100.degree. C. and of nitrogen gas partial pressure of at least 500 atm. Since the presintering does not require any capsule, it is possible to produce high density sintered Si.sub.3 N.sub.4 of complex configurations. As a sintering aid, Y.sub.2 O.sub.3 --Al.sub.2 O.sub.3 --MgO system sintering aid is particularly effective. To improve the strength of sintered Si.sub.3 N.sub.4, it is effective to add a heat treatment step after the HIP and maintain the temperature of the sintered Si.sub.3 N.sub.4 above 500.degree. C. for a while. Between the second and third steps, the temperature of the presintered body is preferably maintained above 500.degree. C. These temperature controls are effective not only to improve the strength of sintered Si.sub.3 N.sub.4 but also to save the thermal energy and to shorten the production cycle.
    • 该说明书描述了一种生产相对密度至少为98%的高密度烧结氮化硅(Si3N4)的方法。 在第一步骤中,氮化硅粉末被压制成所需的形状。 通常在常压下在第二步骤中预烧结,得到相对密度至少为92%的预烧结体。 在第三步骤中,将预烧结体在1500-2100℃的惰性气体气氛和至少500atm的氮气分压下进行热等静压(HIP)。 由于预烧结不需要任何胶囊,因此可以生产复合结构的高密度烧结Si 3 N 4。 作为烧结助剂,Y2O3-Al2O3-MgO体系的烧结助剂特别有效。 为了提高烧结Si3N4的强度,在HIP之后添加热处理步骤并将烧结的Si 3 N 4的温度保持在500℃以上一段时间是有效的。 在第二和第三步骤之间,预烧结体的温度优选保持在500℃以上。这些温度控制不仅有效地提高了烧结Si 3 N 4的强度,而且有效地节约了热能并缩短了生产周期。
    • 6. 发明授权
    • Method for producing high density sintered silicon nitride (Si.sub.3 N.sub.
4
    • 生产高密度烧结氮化硅(Si3N4)的方法
    • US5445776A
    • 1995-08-29
    • US814806
    • 1991-12-31
    • Katuhiko HonmaTsuneo TatsunoHiroshi OkadaMasato MoritokiTakao Fujikawa
    • Katuhiko HonmaTsuneo TatsunoHiroshi OkadaMasato MoritokiTakao Fujikawa
    • C04B35/593C04B35/58
    • C04B35/593C04B35/5935
    • The specification describes a method for producing high density sintered silicon nitride(Si.sub.3 N.sub.4) having a relative density of at least 98%. In a first step, silicon nitride powder is compacted into a desired shape. It is then presintered in a second step, generally, under normal pressure to obtain a presintered body having a relative density of at least 92%. In a third step, the presintered body is subjected to a hot isostatic pressing(HIP) in an inert gas atmosphere of 1500-2100.degree. C. and of nitrogen gas partial pressure of at least 500 atm. Since the presintering does not require any capsule, it is possible to produce high density sintered Si.sub.3 N.sub.4 of complex configurations. As a sintering aid, Y.sub.2 O.sub.3 --Al.sub.2 O.sub.3 --MgO system sintering aid is particularly effective. To improve the strength of sintered Si.sub.3 N.sub.4, it is effective to add a heat treatment step after the HIP and maintain the temperature of the sintered Si.sub.3 N.sub.4, above 500.degree. C. for a while. Between the second and third steps, the temperature of the presintered body is preferably maintained above 500.degree. C. These temperature controls are effective not only to improve the strength of sintered Si.sub.3 N.sub.4 but also to save the thermal energy and to shorten the production cycle.
    • 该说明书描述了一种生产相对密度至少为98%的高密度烧结氮化硅(Si3N4)的方法。 在第一步骤中,氮化硅粉末被压制成所需的形状。 通常在常压下第二步骤中预烧结,得到相对密度至少为92%的预烧结体。 在第三步骤中,在1500-2100℃的惰性气体气氛和至少500atm的氮气分压下对预烧结体进行热等静压(HIP)。 由于预烧结不需要任何胶囊,因此可以生产复合结构的高密度烧结Si 3 N 4。 作为烧结助剂,Y2O3-Al2O3-MgO体系的烧结助剂特别有效。 为了提高烧结Si3N4的强度,在HIP之后添加热处理步骤并将烧结的Si 3 N 4的温度保持在500℃以上一段时间是有效的。 在第二和第三步骤之间,预烧结体的温度优选保持在500℃以上。这些温度控制不仅有效地提高了烧结Si 3 N 4的强度,而且有效地节约了热能并缩短了生产周期。
    • 8. 发明授权
    • Production method of compound-type superconducting wire
    • 复合型超导线的生产方法
    • US4386970A
    • 1983-06-07
    • US312967
    • 1981-10-20
    • Toshiro FukutsukaMasato MoritokiTakao Fujikawa
    • Toshiro FukutsukaMasato MoritokiTakao Fujikawa
    • H01L39/24H01L39/00B22F3/16
    • H01L39/2409Y10S505/823Y10S505/921Y10T29/49014
    • The specification describes a method for producing compound-type superconducting wire of excellent mechanical and electrical properties. A green compact is first formed with copper powder and one of two metals which form a superconducting compound through a reaction therebetween. The latter metal is in a very fine hydrogenated form. The green compact is then heated in vacuo so as to dehydrogenate the hydride of the latter metal and sinter the green compact into a sintered mass. Before or after drawing the sintered mass into a wire, it is composited with the other metal of the two metals, thereby forming a composite wire. It is then subjected to a further heat treatment to cause the reaction to occur between the two metals. To improve its properties, it may be held in a high temperature, high pressure gaseous atmosphere to cause plastic deformation to occur. Since the dehydrogenation and annealing are performed in a single step, the overall process has been simplified. Since the latter metal is dispersed uniformly in the form of highly pure and ultra-fine particles in the Cu-matrix of the sintered mass, it can be drawn very smoothly into a wire and the reaction between the two metals can occur easily. The two metals may for example be Nb and Sn or V and Ga.
    • 该说明书描述了一种具有优异的机械和电学性能的复合型超导线材的制造方法。 首先用铜粉和两种金属之一通过它们之间的反应形成超导化合物。 后一种金属是非常精细的氢化形式。 然后将生坯压片真空加热,使后者金属的氢化物脱氢,并将生坯压坯烧结成烧结体。 在将烧结体拉成线材之前或之后,将其与两种金属的其它金属复合,从而形成复合线。 然后进行进一步的热处理,以使两者之间发生反应。 为了改善其性能,可以将其保持在高温高压气氛中,引起塑性变形。 由于脱氢和退火是在一个步骤中进行的,所以整个过程已被简化。 由于后者金属在烧结体的Cu基体中以高纯度和超细颗粒的形式均匀分散,因此可以非常平滑地拉伸成线,并且容易发生两种金属之间的反应。 这两种金属可以例如是Nb和Sn或V和Ga。
    • 9. 发明授权
    • Method and apparatus for hot isostatic pressing
    • 热等静压的方法和装置
    • US4582681A
    • 1986-04-15
    • US435662
    • 1982-10-21
    • Akira AsariShiro MatsuuraHidehiro TsuzukiYohichi InoueMasato MoritokiTakao FujikawaJunichi Miyanaga
    • Akira AsariShiro MatsuuraHidehiro TsuzukiYohichi InoueMasato MoritokiTakao FujikawaJunichi Miyanaga
    • B22F3/14B22F3/15B28B3/00B30B11/00F27B17/00B22F3/12
    • B30B11/002B22F3/15B28B3/006
    • A hot isostatic pressing system including a hot isostatic pressing station having a high pressure container constituted by a vertical pressure-resistant cylinder closed at the top end thereof and a lower lid detachably fitted to the bottom of the pressure resistant cylinder and a treating chamber internally provided with a heater and enclosed by a heat insulating wall, and a mechanism for adjusting an atmospheric gas pressure and temperature of the pressing station into a condition suitable for the hot isostatic pressing of a work item accommodated in the treating chamber; a plurality of auxiliary stations each provided with an opening for receiving from beneath thereof the heat insulating wall of the treating chamber accommodating the internal heater and a work item, a support structure for supporting the heat insulating wall, and a mechanism for cooling the work item and internal heater in an inert gas atmosphere; a carriage for transferring the lower lid and work item or the lower lid, work item, heat insulating wall and internal heater between the hot isostatic pressing station and one of the auxiliary stations; and a lift mechanism for lifting up and down the lower lid and work item or the lower lid, work item, heat insulating wall and heater at the hot isostatic pressing station and each one of the auxiliary stations.
    • 一种热等静压按压系统,包括具有高压容器的热等静压按压站,所述高压容器由其顶端封闭的垂直耐压圆筒和可拆卸地装配到耐压圆筒底部的下盖以及内部设置的处理室 具有加热器并由绝热壁包围的机构,以及用于将加压站的气氛气体压力和温度调节到适于对容纳在处理室中的工件进行热等静压的状态的机构; 多个辅助站各自具有开口,用于从其下方接收容纳内部加热器的处理室的隔热壁和工件,用于支撑隔热壁的支撑结构和用于冷却工件的机构 和内部加热器在惰性气体气氛中; 用于在热等静压按压站和辅助站之间传送下盖和工作物品或下盖,工件,隔热墙和内部加热器的托架; 以及一个提升机构,用于在热等静压站和每个辅助站上下下盖和工作物品或下盖,工件,隔热墙和加热器。
    • 10. 发明授权
    • High density sintering method for powder molded products
    • 粉末成型制品的高密度烧结方法
    • US4448747A
    • 1984-05-15
    • US413836
    • 1982-09-01
    • Masato MoritokiTakao FujikawaJunichi Miyanaga
    • Masato MoritokiTakao FujikawaJunichi Miyanaga
    • B22F3/14B22F3/15C04B35/593C04B35/645F27B17/00B22F3/16
    • B30B11/002B22F3/15C04B35/5935C04B35/6455
    • A high density sintering method for powder molded products by applying preliminary sintering to powder molded products previously molded into a predetermined shape and then applying hot isostatic press process to the sintered products thereby producing high density sintered product which includes the steps of loading the powder molded products into a movable heating furnace equipped with at least one heating means and having a heat insulating structure, introducing the heating furnace into an atmosphere chamber, applying preliminary sintering to the powder molded products in the heating furnace by the heating means while conditioning the inside of the atmosphere chamber to a vacuum or predetermined gas atmosphere, subsequently removing the heating furnace while maintaining the inside thereof at a high temperature from the atmosphere chamber and directly introducing the furnace into a high pressure vessel, thereafter, applying the hot isostatic press process to the sintered products in the furnace while charging a gas as a pressure medium under pressure into the high pressure vessel and elevating the temperature in the heating furnace by the heating means, thereby producing high density sintered products, and then removing the heating furnace together with the high density sintered products loaded therein out of the high pressure vessel after completion of the hot isostatic press process.
    • 一种粉末成型品的高密度烧结方法,其特征在于,将预先烧成的粉末成型体预先成型为规定形状,然后对烧结体进行热等静压加工,制造高密度烧结体,其特征在于, 进入配备有至少一个加热装置并具有隔热结构的可移动加热炉,将加热炉引入气氛室中,通过加热装置对加热炉中的粉末成型产品进行预烧结,同时调节 气氛室进入真空或预定的气体气氛,随后从大气室中保持其内部的高温,同时将加热炉取出并直接将炉子引入高压容器中,然后将热等静压机加工到烧结 产品在 在将加压介质的气体作为压力介质在高压容器内进行加热的同时,通过加热装置升高加热炉内的温度,由此制造高密度烧结产品,然后与高密度烧结产品一起除去加热炉 在热等静压机加工完成后,将其从高压容器中装载出来。