-
公开(公告)号:US5545362A
公开(公告)日:1996-08-13
申请号:US143233
申请日:1993-10-29
申请人: Naoto Hirosaki , Akira Okada , Yoshio Akimune
发明人: Naoto Hirosaki , Akira Okada , Yoshio Akimune
IPC分类号: C04B35/584 , C04B35/58 , C04B35/593 , C04B35/594
CPC分类号: C04B35/5935
摘要: A sintered silicon nitride excellent in high temperature performance is produced by the following method: First, silicon nitride powder and oxide of at least one element selected from elements in the group IIIb of a periodic table are mixed with each other to obtain a mixture. The silicon nitride powder contains silicon oxide in an amount ranging from 0.1% by weight of the silicon nitride powder to a value not more than a content of the silicon oxide. Second, the mixture is compacted to form a compact. Finally, the compact is fired in atmosphere of nitrogen at a pressure ranging from 5 to 200 atmosphere (atm) and a temperature ranging from 1800.degree. to 2000.degree. C. to obtain a sintered silicon nitrite having a bulk density not less than 95% of a theoretical density of the sintered silicon nitride.
摘要翻译: 通过以下方法制造高温性能优异的烧结氮化硅。首先,将选自元素周期表的IIIb族中的元素的至少一种元素的氮化硅粉末和氧化物彼此混合,得到混合物。 氮化硅粉末含有量为0.1重量%的氮化硅粉末的氧化硅至不大于氧化硅含量的值。 第二,将混合物压实成小块体。 最后,将压坯在氮气气氛中在5〜200个大气压(atm)和1800〜2000℃的温度范围内烧制,得到堆积密度不小于95%的烧结硅亚硝酸盐 烧结氮化硅的理论密度。
-
公开(公告)号:US20120100032A1
公开(公告)日:2012-04-26
申请号:US13253533
申请日:2011-10-05
申请人: Wayne E. VOICE , Junfa MEI , Thomas P. JARVIS
发明人: Wayne E. VOICE , Junfa MEI , Thomas P. JARVIS
IPC分类号: B22F3/15 , C04B35/594
CPC分类号: B22F3/1216 , B22F3/1291 , B22F3/15 , B22F2003/153 , B22F2005/005 , B22F2998/00 , C22C14/00 , C22C19/03 , B22F3/004
摘要: The invention relates to a mould assembly for a hot isostatic pressing, HIP, process, comprising: an insert comprising a plurality of pieces which combine to provide a recess in which a protrusion of the component can be formed; and, a holding piece having at least one cavity in which the insert is mateably received.
摘要翻译: 本发明涉及一种用于热等静压的HIP工艺的模具组件,包括:插入件,其包括多个组合件,其组合以提供可形成所述部件的突起的凹部; 以及具有至少一个空腔的保持件,所述插入件可容纳在所述腔中。
-
公开(公告)号:US20090309274A1
公开(公告)日:2009-12-17
申请号:US12544844
申请日:2009-08-20
申请人: Paul Wilhelm Richter , Jan Talma , Petrus Nicholas Jacobus Gous , Paul Roux , Mark Minnaar , Lewis Mark Levitz , Michael Edward Thomas , Gert Hendrik Jacobus Coetzee
发明人: Paul Wilhelm Richter , Jan Talma , Petrus Nicholas Jacobus Gous , Paul Roux , Mark Minnaar , Lewis Mark Levitz , Michael Edward Thomas , Gert Hendrik Jacobus Coetzee
IPC分类号: C04B35/594
CPC分类号: A61F2/141 , C04B35/447 , C04B38/00 , C04B38/0054 , C04B2111/00836 , C04B2235/5436 , C04B2235/6021 , C04B2235/6022
摘要: An orbital implant includes a body of bioactive material having macropores of at least 400 μm, and a cap of bioactive material having substantially no pores or only micropores smaller than 50 μm. The cap covers a portion of the body.
摘要翻译: 轨道植入物包括具有至少400μm的大孔的生物活性材料体,以及基本上没有孔或只有小于50μm的微孔的生物活性材料的帽。 帽子覆盖身体的一部分。
-
公开(公告)号:US20120100033A1
公开(公告)日:2012-04-26
申请号:US13253585
申请日:2011-10-05
申请人: Wayne E. VOICE , Thomas P. JARVIS
发明人: Wayne E. VOICE , Thomas P. JARVIS
IPC分类号: B22F3/15 , C04B35/594
CPC分类号: B22F3/1216 , B22F3/15 , B22F2003/153 , B22F2005/005 , B22F2998/00 , B22F3/004
摘要: This invention relates to a mould assembly for a hot isostatic pressing, HIP, process for fabricating a component, comprising: a first part which includes a shaped surface for forming a first surface of the component, the shaped surface having at least one recess; a second part arranged to move relative to the first part during the HIP process so as to compress a powder in-fill held therebetween, wherein the second part includes a formation configured to focus pressure toward the recess so as to aid consolidation of the powder in-fill at a distal end thereof.
摘要翻译: 本发明涉及一种用于热等静压的模具组件,HIP,用于制造部件的方法,包括:第一部分,其包括用于形成部件的第一表面的成形表面,所述成形表面具有至少一个凹部; 第二部分,其布置成在HIP过程期间相对于第一部分移动,以便压缩保持在其间的粉末填充物,其中第二部分包括被配置为朝向凹部聚焦压力的结构,以帮助将粉末固结 - 在其远端填充。
-
5.
公开(公告)号:US20050164865A1
公开(公告)日:2005-07-28
申请号:US11031994
申请日:2005-01-11
申请人: Masashi Yoshimura
发明人: Masashi Yoshimura
IPC分类号: C04B35/583 , C04B35/584 , C04B35/591 , C04B35/593 , C04B35/594 , C04B35/596
CPC分类号: C04B35/58071 , B82Y30/00 , C04B35/58014 , C04B35/58064 , C04B35/583 , C04B35/584 , C04B35/587 , C04B35/591 , C04B35/593 , C04B35/62615 , C04B35/62842 , C04B35/6303 , C04B35/64 , C04B2235/3217 , C04B2235/3225 , C04B2235/3804 , C04B2235/3813 , C04B2235/3826 , C04B2235/3843 , C04B2235/3856 , C04B2235/386 , C04B2235/3873 , C04B2235/3886 , C04B2235/404 , C04B2235/422 , C04B2235/425 , C04B2235/46 , C04B2235/5436 , C04B2235/5445 , C04B2235/5454 , C04B2235/549 , C04B2235/666 , C04B2235/781 , C04B2235/80 , C04B2235/85 , C04B2235/96
摘要: The present invention provides a silicon nitride-based sintered body having excellent mechanical properties from room temperature to a medium-low temperature range, a low friction coefficient and excellent wear resistance; a raw material powder for the sintered body; a method of producing the raw material powder; and a method of producing the sintered body. The sintered body of the present invention comprises silicon nitride, titanium compounds and boron nitride, or else silicon nitride, a titanium-based nitride and/or carbide, silicon carbide and graphite and/or carbon; and it has a mean particle diameter of 100 nm or less, and a friction coefficient under lubricant-free conditions of 0.3 or less, or else 0.2 or less. The silicon nitride-based composite powder, which is the raw material of the sintered body comprises primary particles of each of silicon nitride and titanium compounds, containing boron or carbon, each having a mean particle diameter of 20 nm or less, or 30 nm or less, and a phase containing an amorphous phase that surrounds the surfaces of the primary particles. Moreover, the method of producing the sintered body comprises pulverizing and mixing a silicon nitride powder, a sintering aid powder, a metallic titanium powder and a boron nitride powder, or else a silicon nitride powder, a sintering aid powder, a metallic titanium powder and a graphite and/or carbon powder, until the mean particle diameters become 20 nm or less, or else 30 nm or less, thus forming secondary
摘要翻译: 本发明提供一种氮化硅类烧结体,其具有从室温至中低温范围的优异的机械性能,低摩擦系数和优异的耐磨性; 用于烧结体的原料粉末; 一种生产原料粉末的方法; 和烧结体的制造方法。 本发明的烧结体包括氮化硅,钛化合物和氮化硼,或氮化硅,钛基氮化物和/或碳化物,碳化硅和石墨和/或碳; 平均粒径为100nm以下,无润滑条件下的摩擦系数为0.3以下,或0.2以下。 作为烧结体的原料的氮化硅系复合粉末包含平均粒径为20nm以下或30nm以下的硼或碳的氮化硅和钛化合物的一次粒子, 以及包含包围一次颗粒表面的非晶相的相。 此外,制造烧结体的方法包括将氮化硅粉末,烧结助剂粉末,金属钛粉末和氮化硼粉末,或氮化硅粉末,烧结助剂粉末,金属钛粉末和 石墨和/或碳粉末,直到平均粒径变为20nm以下,或者30nm以下,从而形成二次
-
公开(公告)号:US6066582A
公开(公告)日:2000-05-23
申请号:US232008
申请日:1999-01-14
申请人: Marianne Collin , Magnus Ekelund
发明人: Marianne Collin , Magnus Ekelund
IPC分类号: B23B27/14 , C04B35/584 , C04B35/593 , C04B41/52 , C04B41/87 , C04B41/89 , C04B35/594 , C04B35/596
CPC分类号: C04B41/009 , C04B35/593 , C04B35/5935 , C04B41/52 , C04B41/89 , Y10T407/27
摘要: The ceramic cutting tool material according to the present invention comprises a beta silicon nitride matrix with total amount of 0.5-10 weight %, preferably 0.5-6 weight %, of an intergranular phase and 0.05-3 weight % of at least one secondary crystalline phase of a transition metal carbide, nitride, carbonitride and/or silicide present as spherical particles with a size of 0.1-2 .mu.m, preferably submicron (0.01-1 .mu.m). The transition metal is preferably niobium and/or tantalum. The material has less than 1 volume %, preferably less than 0.3 volume %, porosity. The beta silicon nitride grains are to at least 10%, preferably more than 20%, elongated with an aspect ratio greater than 3, preferably greater than 5. The grain diameter of the beta silicon nitride grains is in the range of 0.2-10 .mu.m, preferably 0.2-5 .mu.m, and most preferably 0.2-3 .mu.m.
摘要翻译: 根据本发明的陶瓷切削工具材料包括总量为0.5-10重量%,优选0.5-6重量%的晶间相和0.05-3重量%的至少一个第二结晶相的β氮化硅基体 过渡金属碳化物,氮化物,碳氮化物和/或硅化物作为球形颗粒存在,其尺寸为0.1-2μm,优选亚微米(0.01-1μm)。 过渡金属优选为铌和/或钽。 该材料的孔隙率小于1体积%,优选小于0.3体积%。 β氮化硅颗粒至少10%,优选大于20%,纵横比大于3,优选大于5。β氮化硅颗粒的晶粒直径在0.2-10μm的范围内 m,优选0.2-5μm,最优选0.2-3μm。
-
-
-
-
-