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8 条记录 (耗时 0.016 秒)

    Cemented ceramic article made from ultrafine solid solution powders, method of making same, and the material thereof
    3.
    发明授权
    Cemented ceramic article made from ultrafine solid solution powders, method of making same, and the material thereof 失效
    由超细固溶粉末制成的水泥陶瓷制品，其制造方法及其材料

    公开(公告)号：US5580666A

    公开(公告)日：1996-12-03

    申请号：US375759

    申请日：1995-01-20

    申请人： Ellen M. Dubensky ,  Stephen D. Dunmead ,  Daniel F. Carroll

    发明人： Ellen M. Dubensky ,  Stephen D. Dunmead ,  Daniel F. Carroll

    IPC分类号： C22C29/06 ,  C22C1/05 ,  C22C29/08 ,  B22F7/06

    CPC分类号： C22C29/08 ,  Y10T428/12014 ,  Y10T428/12028 ,  Y10T428/12049 ,  Y10T428/12056 ,  Y10T428/1216

    摘要： A multi-phase cemented ceramic article, method of making same, and the material thereof is disclosed which is useful for machining and forming of metals, including ferrous metals, titanium, aluminum and other metals. The article and its material preferably includes novel microstructures including platelets, a range of grain sizes which yields superior hardness and other characteristics, and a lower tungsten concentration within the binder phase than has been seen in the prior art. The preferred composition includes ultrafine WC, an ultrafine solid solution of (Ti, Ta, W)C, and a cobalt binder. Platelets are formed in-situ, eliminating the need to add them during manufacture for improving toughness.

    摘要翻译： 公开了一种多相胶合陶瓷制品，其制造方法及其材料，其可用于包括黑色金属，钛，铝和其它金属的金属的机械加工和成型。 该物品及其材料优选包括新颖的微结构，包括血小板，一系列晶粒尺寸，其产生优异的硬度和其它特性，以及在粘结相中比在现有技术中已经看到的更低的钨浓度。 优选的组合物包括超细WC，（Ti，Ta，W）C和钴粘合剂的超细固溶体。 血小板原位形成，无需在制造过程中添加血小板来提高韧性。

    Method to produce a transition metal carbide from a partially reduced transition metal compound
    4.
    发明授权
    Method to produce a transition metal carbide from a partially reduced transition metal compound 失效
    从部分还原的过渡金属化合物制备过渡金属碳化物的方法

    公开(公告)号：US5942204A

    公开(公告)日：1999-08-24

    申请号：US967965

    申请日：1997-11-12

    申请人： Stephen D. Dunmead ,  Hobart A. Barker ,  John P. Henley ,  Pat J. DeLuca ,  Tom J. Bunnelle ,  Joe F. Repman ,  Daniel F. Carroll ,  Stephen A. Anderson

    发明人： Stephen D. Dunmead ,  Hobart A. Barker ,  John P. Henley ,  Pat J. DeLuca ,  Tom J. Bunnelle ,  Joe F. Repman ,  Daniel F. Carroll ,  Stephen A. Anderson

    IPC分类号： C01B31/30 ,  C01B31/34

    CPC分类号： C01B31/303 ,  C01B31/305 ,  C01B31/34 ,  C01P2006/12 ,  C01P2006/80

    摘要： A transition metal carbide (e.g., WC) is prepared by the following steps. A carbon-precursor mixture is formed by mixing a precursor comprised of (i) a transition metal oxide (e.g., WO.sub.x) and (ii) a material selected from the group consisting of: a transition metal (e.g., W); a transition metal carbide (e.g., WC) and a substoichiometric carbide (W.sub.2 C), in the presence of a source of carbon (e.g., carbon black) in an amount sufficient to form a reduced mixture comprised of the transition metal carbide and substoichiometric transition metal carbide, wherein the amount of the transition metal oxide and transition metal is essentially zero in said reduced mixture. The carbon-precursor mixture is heated in a reducing atmosphere (e.g., 5 percent hydrogen in argon) to a reducing temperature and for a time sufficient to produce the reduced mixture. The reduced mixture is milled in the presence of a source of carbon in an amount sufficient to carburize the substoichiometric transition metal carbide to form the transition metal upon heating in a reducing atmosphere. Finally, the milled reduced mixture is heated in a reducing atmosphere to a carburizing temperature that is greater than the reducing temperature for a time sufficient to carburize the substoichiometric transition metal carbide to form the transition metal carbide of this invention (e.g., WC).

    摘要翻译： 通过以下步骤制备过渡金属碳化物（例如WC）。 通过混合由（i）过渡金属氧化物（例如WOx）和（ii）选自以下的材料组成的前体形成碳前体混合物：过渡金属（例如W）; 在碳源（例如炭黑）存在下，过渡金属碳化物（例如WC）和亚化学计量碳化物（W2C）的量足以形成由过渡金属碳化物和亚化学计量过渡金属组成的还原混合物 碳化物，其中过渡金属氧化物和过渡金属的量在所述还原的混合物中基本为零。 将碳前体混合物在还原气氛（例如氩气中的5％氢气）中加热至还原温度并持续足以产生还原混合物的时间。 将还原的混合物在碳源存在下研磨，其量足以使亚化学计量过渡金属碳化物渗碳以在还原气氛中加热时形成过渡金属。 最后，将研磨后的还原混合物在还原气氛中加热至大于还原温度的渗碳温度足以使亚化学计量过渡金属碳化物渗碳形成本发明的过渡金属碳化物（例如WC）的时间。

    Method of making moisture resistant aluminum nitride powder and powder produced thereby
    5.
    发明授权
    Method of making moisture resistant aluminum nitride powder and powder produced thereby 失效
    制造耐湿氮化铝粉末的方法和由此制备的粉末

    公开(公告)号：US5601874A

    公开(公告)日：1997-02-11

    申请号：US578931

    申请日：1995-12-27

    申请人： Kevin E. Howard ,  Daniel F. Carroll ,  Scott J. Biskupski

    发明人： Kevin E. Howard ,  Daniel F. Carroll ,  Scott J. Biskupski

    IPC分类号： C01B21/072 ,  C04B41/45 ,  C04B41/81 ,  C08K9/02 ,  C08K9/06 ,  C09C1/40 ,  C09C3/00 ,  B05D7/00

    CPC分类号： C04B41/009 ,  C01B21/0728 ,  C04B41/4584 ,  C04B41/81 ,  C08K9/02 ,  C08K9/06 ,  C09C1/40 ,  C09C3/006 ,  C01P2004/86

    摘要： A method for making a moisture-resistant aluminum nitride-containing powder which includes (a) coating a layer of silicate onto aluminum nitride-containing powder having aluminum nitride on at least a portion of its surface and (b) heat-treating the coated aluminum nitride-containing powder at a temperature of from 350.degree. to 1000.degree. C. for a period of time sufficient to cause the silicate to react with the surface aluminum nitride thereby forming a layer of Si--Al--O--N bonded to the surface aluminum nitride. The silicate has alkyl or alkoxyalkyl radicals attached thereto. The method yields a moisture-resistant aluminum nitride-containing powder having a layer of Si--Al--O--N reaction-bonded to the surface aluminum nitride.

    摘要翻译： 一种制造耐湿氮化铝的粉末的方法，其包括（a）在其表面的至少一部分上将含硅氮化物的氮化铝粉末涂覆到含氮化铝的粉末上，以及（b）将所述涂覆的铝 含氮粉末在350〜1000℃的温度下搅拌足以使硅酸盐与表面氮化铝反应的时间，从而形成与表面氮化铝结合的Si-Al-ON层。 硅酸盐具有与其连接的烷基或烷氧基烷基。 该方法产生具有与表面氮化铝反应结合的Si-Al-O-N层的耐湿氮化铝粉末。

    Method of preparing pressable powders of a transition metal carbide, iron group metal of mixtures thereof
    6.
    发明授权
    Method of preparing pressable powders of a transition metal carbide, iron group metal of mixtures thereof 失效
    制备过渡金属碳化物，铁族金属或其混合物的可压粉末的方法

    公开(公告)号：US06245288B1

    公开(公告)日：2001-06-12

    申请号：US09494454

    申请日：2000-01-31

    申请人： Daniel F. Carroll

    发明人： Daniel F. Carroll

    IPC分类号： B22F100

    CPC分类号： B22F1/0059 ,  B22F9/026 ,  C22C1/051

    摘要： A pressable powder is formed by a method comprising [I] mixing, in essentially deoxygenated water, [A] a first powder selected from the group consisting of a transition metal carbide and transition metal with [B] an additional component selected from the group consisting of (i) a second powder comprised of a transition metal carbide, transition metal or mixture thereof; (ii) an organic binder and (iii) combination thereof and [II] drying the mixed mixture to form the pressable powder, wherein the second powder is chemically different than the first powder. The pressable powder may then be formed into a shaped part and subsequently densified into a densified part, such as a cemented tungsten carbide.

    摘要翻译： 通过以下方法形成可挤压粉末：[I]在基本上脱氧的水中混合[A]选自过渡金属碳化物和过渡金属的第一种粉末与[B]另外的组分，所述另外的组分选自 （i）由过渡金属碳化物，过渡金属或其混合物组成的第二粉末; （ii）有机粘合剂和（iii）其组合，和[II]将混合的混合物干燥以形成可挤压粉末，其中第二粉末在化学上不同于第一粉末。 然后将可挤压粉末形成为成形部件，随后致密化成致密部分，例如粘结碳化钨。

    Method of preparing pressable powders of a transition metal carbide, iron group metal or mixtures thereof
    7.
    发明授权
    Method of preparing pressable powders of a transition metal carbide, iron group metal or mixtures thereof 失效
    制备过渡金属碳化物，铁族金属或其混合物的可压粉末的方法

    公开(公告)号：US5922978A

    公开(公告)日：1999-07-13

    申请号：US49625

    申请日：1998-03-27

    申请人： Daniel F. Carroll

    发明人： Daniel F. Carroll

    IPC分类号： C04B35/56 ,  B22F3/02 ,  C22C1/05 ,  C22C1/10 ,  B22F3/16

    CPC分类号： C22C1/1084 ,  C22C1/051

    摘要： A pressable powder is formed by a method comprising mixing, in essentially deoxygenated water, a first powder selected from the group consisting of a transition metal carbide and transition metal with an additional component selected from the group consisting of (i) a second powder comprised of a transition metal carbide, transition metal or mixture thereof; (ii) an organic binder and (iii) combination thereof and drying the mixed mixture to form the pressable powder, wherein the second powder is chemically different than the first powder. The pressable powder may then be formed into a shaped part and subsequently densified into a densified part, such as a cemented tungsten carbide.

    摘要翻译： 通过包括在基本上脱氧的水中混合选自过渡金属碳化物和过渡金属的第一种粉末与另外的组分的混合物形成可挤压粉末，所述另外的组分选自（i）由 过渡金属碳化物，过渡金属或其混合物; （ii）有机粘合剂和（iii）其组合并干燥混合的混合物以形成可挤压粉末，其中第二粉末在化学上不同于第一粉末。 然后将可挤压粉末形成为成形部件，随后致密化成致密部分，例如粘结碳化钨。