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2.发明授权Process for producing doped tungsten wire with low strength and high ductility 失效具有低强度和高延展性的掺杂钨丝的生产工艺
公开(公告)号：US4863527A
公开(公告)日：1989-09-05
申请号：US58432
申请日：1987-06-05
摘要： A process is disclosed for producing doped tungsten wire having a combination of relatively low strength and high ductility. The process involves swaging recrystallized rod to a diameter of from about 80 to about 125 mil, drawing this rod into wire having a diameter of from about 52 to about 62 mil, and stress-relief annealing the wire to impart the combination of low strength and high ductility to the wire when it is drawn to about 35 to about 37 mils.
摘要翻译： 公开了一种具有相对低强度和高延展性组合的掺杂钨丝的方法。 该方法涉及将再结晶棒模锻成直径为约80至约125密耳，将该棒拉成直径为约52至约62密耳的线，并且对钢丝进行应力消除退火以赋予低强度和 当拉伸到约35至约37密耳时，对导线的高延展性。
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公开(公告)号：US5604321A
公开(公告)日：1997-02-18
申请号：US507184
申请日：1995-07-26
CPC分类号： H01K1/10 , C22C1/10 , C22C1/1026 , C22C32/0031 , C22F1/18
摘要： A wire for fabrication of a vibration resistant filament for an incandescent lamp. The wire includes about 0.05-1.00 weight percent lanthanum oxide dispersed in a tungsten matrix and has a microstructure including stringers of fine particles of lanthanum oxide extending parallel to the wire axis. During primary recrystallization of a vibration resistant lamp filament from the filament wire, the stringers produce a microstructure in the filament exhibiting sufficient grain boundary segments extending generally axially along the length of the filament to render the filament resistant to vibration. A method for producing a vibration resistant filament for an incandescent lamp is also disclosed.
摘要翻译： 用于制造用于白炽灯的抗振丝的线。 导线包括分散在钨基体中的约0.05-1.00重量％的氧化镧，并且具有包括平行于线轴延伸的氧化镧的细颗粒的微结构。 在从灯丝丝中防振灯丝的一次再结晶过程中，桁条在细丝中产生显微组织，表现出足够的晶界段，其沿着灯丝的长度大致沿轴向延伸，从而使灯丝抵抗振动。 还公开了一种用于生产用于白炽灯的抗振灯丝的方法。
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公开(公告)号：US4781886A
公开(公告)日：1988-11-01
申请号：US161809
申请日：1988-02-29
IPC分类号： B22F3/15
CPC分类号： B22F3/15
摘要： A method is disclosed for producing a high hardness refractory metal part, the method comprising hot isostatic pressing a refractory metal part having a density greater than about 98% of the theoretical density in the presence of a pressurizing gas having an atomic size great enough to strain the lattice of the refractory metal at a pressure to exceed the yield strength of the metal to result in the densification of the part to a density of greater than about 98% of the theoretical density. The part is then rapidly cooled. The resulting part has a hardness approaching the hardness of mechanically worked material.
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公开(公告)号：US4322248A
公开(公告)日：1982-03-30
申请号：US94403
申请日：1979-11-15
摘要： An alloy lead-in wire of molybdenum and tantalum which has gettering properties and a method of making the lead-in wire is described.
摘要翻译： 描述了具有吸气性的钼和钽的合金引入线和制造引入线的方法。
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公开(公告)号：US6129890A
公开(公告)日：2000-10-10
申请号：US391121
申请日：1999-09-07
CPC分类号： H01K3/02 , C22B34/36 , C22C1/045 , H01K1/08 , B22F2998/10
摘要： It has been discovered that potassium retention in NS tungsten processing may be improved by double doping tungsten blue oxide (TBO) prior to reduction. The novel `double-doping` process consists of dry doping standard singly doped K--Al--Si TBO with potassium nitrate, KNO.sub.3, followed by the standard reduction, acid washing, sintering, rolling and drawing steps. In another aspect, the novel method includes an aqueous extraction of heteropolytungstate anion [SiW.sub.11 O.sub.39 ].sup.8- from a sample of the singly doped tungsten blue oxide to predict potassium retention.
摘要翻译： 已经发现，通过在还原之前的双掺杂钨蓝氧化物（TBO）可以改善NS钨处理中的钾保留。 新型“双掺杂”工艺由干掺杂标准的单掺杂K-Al-Si TBO与硝酸钾KNO3组成，接着进行标准还原，酸洗，烧结，轧制和拉伸步骤。 另一方面，该新方法包括从单掺杂的钨蓝氧化物的样品中提取杂多钨酸阴离子[SiW11O39] 8-来预测钾的保留。
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公开(公告)号：US5742891A
公开(公告)日：1998-04-21
申请号：US628221
申请日：1996-04-04
CPC分类号： H01K1/10 , C22C1/10 , C22C1/1026 , C22C32/0031 , C22F1/18
摘要： A wire for fabrication of a vibration resistant filament for an incandescent lamp. The wire includes about 0.05-1.00 weight percent lanthanum oxide dispersed in a tungsten matrix and has a microstructure including stringers of fine particles of lanthanum oxide extending parallel to the wire axis. During primary recrystallization of a vibration resistant lamp filament from the filament wire, the stringers produce a microstructure in the filament exhibiting sufficient grain boundary segments extending generally axially along the length of the filament to render the filament resistant to vibration. A method for producing a vibration resistant filament for an incandescent lamp is also disclosed.
摘要翻译： 用于制造用于白炽灯的抗振丝的线。 导线包括分散在钨基体中的约0.05-1.00重量％的氧化镧，并且具有包括平行于线轴延伸的氧化镧的细颗粒的微结构。 在从灯丝丝中防振灯丝的一次再结晶过程中，桁条在细丝中产生显微组织，表现出足够的晶界段，其沿着灯丝的长度大致沿轴向延伸，从而使灯丝抵抗振动。 还公开了一种用于生产用于白炽灯的抗振灯丝的方法。
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公开(公告)号：US5734960A
公开(公告)日：1998-03-31
申请号：US297476
申请日：1994-08-29
申请人： Thomas J. Patrician , Michael J. Miller , James N. Christini , Michael J. Cheresnowsky , Vernon L. Carr, Jr.
发明人： Thomas J. Patrician , Michael J. Miller , James N. Christini , Michael J. Cheresnowsky , Vernon L. Carr, Jr.
CPC分类号： C22C1/045
摘要： A process for producing potassium and silicon doped molybdenum (KS molybdenum). The process involves mixing an aqueous ammonium molybdate solution and a dilute aqueous potassium silicate solution. The molybdate solution has a pH and a specific gravity sufficient to promote formation of diammonium molybdate crystals in the mixture. Preferably, the pH is about 8.8-11.0 and the specific gravity is about 1.20-1.32. The amount of potassium silicate and the amount of potassium silicate solution are selected to provide predetermined amounts of potassium and silicon in the mixture, preferably about 800-1300 ppm potassium and about 500-1100 ppm silicon, both amounts based on the amount of molybdenum. The mixture is heated to aid dissolution of the potassium silicate and ammonium molybdate in said mixture and to produce a homogeneous solution of ammonium molybdate, potassium, and silicon. The ammonium dimolybdate doped with potassium and silicon is then crystallized out of solution and calcined, for example in an atmosphere of dissociated ammonia, to produce molybdenum dioxide doped with potassium and silicon. The doped molybdenum dioxide is reduced, for example in a flowing hydrogen atmosphere, to produce a doped molybdenum powder, which then may be pressed and sintered to full density.
摘要翻译： 一种生产钾和硅掺杂钼（KS钼）的方法。 该方法包括混合钼酸铵水溶液和稀的硅酸钾水溶液。 钼酸盐溶液具有足以促进混合物中钼酸铵晶体形成的pH和比重。 优选地，pH为约8.8-11.0，比重为约1.20-1.32。 选择硅酸钾的量和硅酸钾溶液的量以在混合物中提供预定量的钾和硅，优选约800-1300ppm钾和约500-1100ppm硅，两者都基于钼的量。 将混合物加热以帮助硅酸钾和钼酸铵在所述混合物中的溶解，并产生钼酸铵，钾和硅的均匀溶液。 然后将掺杂有钾和硅的二钼酸铵从溶液中结晶出来并煅烧，例如在解离的氨气氛中，生成掺有钾和硅的二氧化钼。 掺杂的二氧化钼例如在流动的氢气氛中被还原，以产生掺杂的钼粉末，然后可将其压制并烧结至全密度。
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9.发明授权Process for producing molybdenum and tungsten alloys containing metal carbides 失效含有金属碳化物的钼和钨合金的生产方法
公开(公告)号：US4670216A
公开(公告)日：1987-06-02
申请号：US911602
申请日：1986-09-25
摘要： A three step process in which a metal alloy selected from a tungsten based alloy and molybdenum based alloys is provided to prevent the decarbonization of the alloys. The process involves a three step sintering process wherein the atmosphere during the initial heating step is a mixture of carbon monoxide and hydrogen, thereafter at a intermediate temperature range the atmosphere is hydrogen and a final heating step at a elevated temperature is employed and the atmosphere is a mixture of inert gas and a source of carbon.
摘要翻译： 提供选自钨基合金和钼基合金的金属合金以防止合金脱碳的三步法。 该方法包括三步骤烧结方法，其中初始加热步骤期间的气氛是一氧化碳和氢气的混合物，之后在中等温度范围内，气氛为氢气，并且采用升高的温度下的最终加热步骤 惰性气体和碳源的混合物。
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公开(公告)号：US5590386A
公开(公告)日：1996-12-31
申请号：US507183
申请日：1995-07-26
CPC分类号： B23K35/327 , B22F3/23 , B23K35/222 , B23K35/402 , C22C1/1005 , B22F2998/00 , B22F2998/10 , B22F2999/00
摘要： In a method of making alloy of tungsten and lanthana, lanthanum hydroxide is blended with tungsten metal powder, the mixture is pressed to form a pressed ingot, optionally presintered, and sintered to form the alloy. The use of lanthanum hydroxide as the source of the lanthana dopant allows the pressed or presintered ingots to be stored in air prior to sintering for prolonged periods without becoming degraded from exposure to atmospheric moisture.
摘要翻译： 在制造钨和镧的合金的方法中，将氢氧化镧与钨金属粉末混合，将该混合物压制成可以任意预烧结的压铸锭，并烧结以形成合金。 使用氢氧化镧作为镧掺杂剂的来源允许压制或预烧的锭在烧结之前长时间储存在空气中而不会暴露于大气湿气中而降解。
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