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    Process for producing fine powders by hot substrate microatomization
    5.
    发明授权
    Process for producing fine powders by hot substrate microatomization 失效
    通过热底物微分解制备细粉末的方法

    公开(公告)号：US5124091A

    公开(公告)日：1992-06-23

    申请号：US704681

    申请日：1991-05-17

    申请人： Muktesh Paliwal ,  Robert J. Holland, Sr.

    发明人： Muktesh Paliwal ,  Robert J. Holland, Sr.

    IPC分类号： B01J2/04 ,  B22F1/00 ,  B22F9/08

    CPC分类号： B22F9/082 ,  B01J2/04 ,  B22F1/0048

    摘要： A process for producing fine powder, which includes entraining a starting powder material in a carrier gas, injecting the starting powder material using the carrier gas into a high temperature jet to form a high velocity stream of molten droplets, fragmenting the resulting high velocity molten droplets by impacting against a substrate wherein the temperature of the substrate is above the melting point of the powder material, to form smaller droplets, and allowing the resulting fragmented smaller droplets to spheroidize and solidify in flight.

    摘要翻译： 一种生产精细粉末的方法，其包括将起始粉末材料夹入载气中，使用载气将起始粉末材料注入高温射流中以形成高速熔融液滴流，将所得到的高速熔融液滴碎裂 通过冲击衬底，其中衬底的温度高于粉末材料的熔点，以形成更小的液滴，并且允许所得的碎裂的较小的液滴在飞行中球化和固化。

    Aluminum based composite powders and process for producing same
    6.
    发明授权
    Aluminum based composite powders and process for producing same 失效
    铝基复合粉末及其制造方法

    公开(公告)号：US4755221A

    公开(公告)日：1988-07-05

    申请号：US843440

    申请日：1986-03-24

    申请人： Muktesh Paliwal ,  Walter A. Johnson

    发明人： Muktesh Paliwal ,  Walter A. Johnson

    IPC分类号： B22F1/00 ,  C22C1/10 ,  C22C32/00 ,  C22C29/14

    CPC分类号： B22F1/0048 ,  C22C1/1042 ,  C22C32/0073

    摘要： Composite powder particles which are essentially spherical in shape are disclosed which consist essentially of particles of a matrix phase which consists essentially of a metal selected from the group consisting of aluminum and aluminum based alloys and a reinforcement phase which is relatively uniformly dispersed in and bonded to the matrix, the reinforcement phase comprising titanium diboride.A process is disclosed for producing the above composite particles which involves entraining in a carrier gas a plurality of agglomerated powders, at least one of the powders supplying aluminum, at least one of the powders supplying titanium without boron and at least one of the powders supplying boron without titanium. The powders are fed through a high temperature zone to cause essentially complete melting and coalescence of the powders wherein at least a part of the titanium and at least a part of the boron combine to form titanium diboride and thereafter resolidified to form the composite powder particles.The resolidification can be done by impacting the high temperature treated powder against a surface having a temperature below the solidification temperature of the matrix, in which case a composite material is formed.

    摘要翻译： 公开了基本上是球形的复合粉末颗粒，其基本上由基质相的颗粒组成，其基本上由选自铝和铝基合金的金属组成，并且增强相相对均匀地分散并粘合到 该基体，包含二硼化钛的增强相。 公开了一种用于生产上述复合颗粒的方法，其包括在载气中夹带多个附聚粉末，至少一种供应铝的粉末，至少一种不提供硼的粉末和至少一种粉末供应 不含钛的硼。 将粉末通过高温区域进料，以使粉末基本上完全熔融和聚结，其中钛和至少一部分硼的至少一部分结合形成二硼化钛，然后重新固化形成复合粉末颗粒。 可以通过将高温处理的粉末抵抗温度低于基体的凝固温度的表面来进行再凝固，在这种情况下形成复合材料。

    Process for producing aluminum-titanium diboride composites
    7.
    发明授权
    Process for producing aluminum-titanium diboride composites 失效
    二硼化钛复合材料的生产工艺

    公开(公告)号：US4690796A

    公开(公告)日：1987-09-01

    申请号：US839313

    申请日：1986-03-13

    申请人： Muktesh Paliwal

    发明人： Muktesh Paliwal

    IPC分类号： B22F1/00 ,  C22C32/00

    CPC分类号： B22F1/0048 ,  C22C32/0073

    摘要： A process is disclosed for producing composite powder particles consisting essentially of a matrix phase and a reinforcement phase. The process involves entraining agglomerated particles in a carrier gas, the agglomerated particles consisting essentially of titanium diboride and particles of a metal selected from the group consisting of aluminum and aluminum based alloys. The agglomerated particles are fed through a high temperature zone having a temperature sufficient to allow the metal particles to melt, coalesce together, and encapsulate the titanium diboride particles. The metal is then resolidified, resulting in the formation of the composite powder particles wherein the matrix phase consists essentially of the metal and the reinforcement phase consists essentially of the titanium diboride particles.A process is disclosed for producing a composite material in which the metal which is selected from the group consisting of aluminum and aluminum based alloys is the matrix phase and titanium diboride is the reinforcement phase. The process involves entraining agglomerates in a carrier gas and passing the agglomerates through a high temperature zone as described above. The metal is resolidified by impacting the resulting high temperature treated particles against a surface having a temperature below the solidification temperature of the metal.

    摘要翻译： 公开了用于生产基本上由基质相和强化相组成的复合粉末颗粒的方法。 该方法包括将载气中的附聚颗粒夹带，所述附聚颗粒基本上由二硼化钛和选自铝和铝基合金的金属颗粒组成。 聚集的颗粒通过具有足以允许金属颗粒熔化，聚结在一起并包封二硼化钛颗粒的温度的高温区域。 然后将金属重新固化，导致复合粉末颗粒的形成，其中基质相基本上由金属组成，增强相主要由二硼化钛颗粒组成。 公开了一种制造复合材料的方法，其中选自铝和铝基合金的金属是基体相，并且二硼化钛是增强相。 该方法包括将载体夹带在载气中并使附聚物通过如上所述的高温区。 通过将所得到的高温处理过的颗粒撞击温度低于金属凝固温度的表面，将金属重新固化。

    Process for producing agglomerates of aluminum based material
    8.
    发明授权
    Process for producing agglomerates of aluminum based material 失效
    生产铝基材料团块的方法

    公开(公告)号：US4735652A

    公开(公告)日：1988-04-05

    申请号：US931572

    申请日：1986-11-17

    申请人： Walter A. Johnson ,  Muktesh Paliwal ,  Lori S. Pruyne ,  John E. Miller

    发明人： Walter A. Johnson ,  Muktesh Paliwal ,  Lori S. Pruyne ,  John E. Miller

    IPC分类号： B22F1/00 ,  C22C1/04 ,  C22B1/00

    CPC分类号： B22F1/0096

    摘要： A process is disclosed for producing agglomerates of aluminum based material which is suitable for plasma melting rapid solidification processing. The process involves first forming a slurry comprising the aluminum based material and one or more fluxing agents and then removing the liquid medium from the slurry to produce agglomerates of the aluminum based material and the fluxing agent or agents.

    摘要翻译： 公开了一种用于生产适用于等离子熔融快速固化处理的铝基材料附聚物的方法。 该方法包括首先形成包含铝基材料和一种或多种助熔剂的浆料，然后从浆料中除去液体介质以产生铝基材料和助熔剂或试剂的附聚物。

    Metal matrix composite powders and process for producing same
    9.
    发明授权
    Metal matrix composite powders and process for producing same 失效
    金属基复合粉末及其制造方法

    公开(公告)号：US4687511A

    公开(公告)日：1987-08-18

    申请号：US863653

    申请日：1986-05-15

    申请人： Muktesh Paliwal ,  Walter A. Johnson

    发明人： Muktesh Paliwal ,  Walter A. Johnson

    IPC分类号： B22F1/00 ,  C22C1/05 ,  C22C1/10 ,  H01H11/04

    CPC分类号： B22F1/0048 ,  B22F1/0088 ,  C22C1/058 ,  C22C1/1042 ,  H01H11/048

    摘要： A composite powdered material is disclosed consisting essentially of particles having a metal matrix and one or more relatively uniform discrete dispersed reinforcement phases in the matrix, the reinforcement phases being of high strength or high hardness compounds selected from intermetallic compounds and metal compounds selected from the group consisting of metal borides, carbides, nitrides, oxides, carbonitrides, and mixtures thereof. The composite powdered particles are spheres of from about 25 to about 200 micrometers and the reinforcement phases have particles of a maximum size of less than about 10 micrometers. A process for producing this composite powder is disclosed which involves entraining in a carrier gas a plurality of powders wherein at least one of the powders supplies the metal from which the matrix is to be formed, and wherein at least two of the powders supply the constituents from which the reinforcement phases are to be formed. The powders are then fed through a high temperature zone to cause essentially complete melting and coalescence of the powders and to cause at least part of the constituents to combine to form at least one of the reinforcement phases, followed by resolidification.

    摘要翻译： 公开了一种复合粉末材料，其基本上由在基体中具有金属基体和一个或多个相对均匀的分散分散的强化相的颗粒组成，强化相是高强度或选自金属间化合物和选自以下的金属化合物的高硬度化合物 由金属硼化物，碳化物，氮化物，氧化物，碳氮化物及其混合物组成。 复合粉末颗粒是约25至约200微米的球体，并且强化相具有小于约10微米的最大尺寸的颗粒。 公开了一种生产该复合粉末的方法，其包括将多种粉末夹带在载体气体中，其中至少一种粉末供应要从其中形成基质的金属，并且其中至少两种粉末供应组分 从中形成加固相。 然后将粉末通过高温区域进料以引起粉末的基本上完全熔化和聚结，并使至少部分组分结合形成至少一个强化相，随后重新固化。