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21. 发明申请

WO1992016325A1 METHODS FOR PRODUCING CERAMIC-METAL COMPOSITES FROM CERAMIC AND METAL POWDERS 审中-公开
标题翻译：从陶瓷和金属粉末生产陶瓷 - 金属复合材料的方法
公开(公告)号：WO1992016325A1
公开(公告)日：1992-10-01
申请号：PCT/US1992001044
申请日：1992-02-07
申请人： THE DOW CHEMICAL COMPANY
发明人： THE DOW CHEMICAL COMPANY , WILLIAMS, Paul, D. , PYZIK, Aleksander, J.
IPC分类号： B22F03/26
CPC分类号： B22F3/26 , C22C1/1036
摘要： Ceramic-metal composite devices are fabricated from an initial mixture of ceramic powder and metal powder. The mixture is shaped into a preform compact and additional metal is placed on the peripheral surface of the compact. The preform compact and additional metal are placed in a furnace and heated to at least the wetting temperature of the metal. The molten metal intrudes the preform compact and fills voids of the compact. This intrusion and filling process is aided by the metal from the metal powder which wets the ceramic powder. Rapid and extensive intrusion and filling are achieved. Large ceramic-metal composite devices can be made by this technique.
摘要翻译：陶瓷 - 金属复合器件由陶瓷粉末和金属粉末的初始混合物制成。将混合物成型为预制件，并将附加的金属放置在压块的外周表面上。将预制件和附加金属放置在炉中并加热至少至金属的润湿温度。熔融金属侵入预制件坯料并填充压块的空隙。这种入侵和填充过程由金属粉末辅助，该金属粉末会润湿陶瓷粉末。实现了快速，广泛的入侵和灌装。可以通过这种技术制造大型陶瓷 - 金属复合器件。

22. 发明申请

WO1996018748A3 COMPUTER DISK SUBSTRATE, THE PROCESS FOR MAKING SAME, AND THE MATERIAL MADE THEREFROM 审中-公开
公开(公告)号：WO1996018748A3
公开(公告)日：1996-06-20
申请号：PCT/US1995015794
申请日：1995-12-06
申请人： THE DOW CHEMICAL COMPANY
发明人： THE DOW CHEMICAL COMPANY , PYZIK, Aleksander, J. , DESHMUKH, Uday, V. , HAN, Chan , NILSEN, Kevin, J. , PERETTIE, Donald, J. , PRUNIER, Arthur, R., Jr.
IPC分类号： C22C32/00

23. 发明申请

WO1994005819A1 CERMET OR CERAMIC/GLASS COMPOSITES INCLUDING SELF-REINFORCED BETA-SILICON NITRIDE, AND METHOD OF MAKING SAME 审中-公开
标题翻译：包括自增强氮化硅的陶瓷或玻璃/玻璃复合材料及其制造方法
公开(公告)号：WO1994005819A1
公开(公告)日：1994-03-17
申请号：PCT/US1993005822
申请日：1993-06-16
申请人： THE DOW CHEMICAL COMPANY
发明人： THE DOW CHEMICAL COMPANY , PYZIK, Aleksander, J.
IPC分类号： C22C01/09
CPC分类号： C22C1/1015 , C03C14/00 , C03C2214/06 , C03C2214/20 , C03C2214/30 , C04B30/02 , C04B38/00 , C04B2111/00922 , C22C1/10 , C04B35/584 , C04B41/0072 , C04B14/328 , C04B40/0263
摘要： Infiltrate a porous, self-reinforced (beta)-Si3N4 preform with a metal or a crystallizable glass to yield a composite material. The preform possesses a low glass phase and has a density of from 50 to 70 percent of theoretical density. Prepare the (beta)-Si3N4 preform by subjecting a porous body formed from an (alpha)-Si3N4 powder composition to two sequential heat treatments. The first heat treatment occurs below the (alpha)- to (beta)-conversion temperature and results in a strengthened body that can be machined. The second heat treatment occurs above that temperature and yields the self-reinforced (beta)-Si3N4 preform. Conventional infiltration procedures with an infiltrant that is a metal or a glass results in an Si3N4/metal or Si3N4/glass composite material that has 50 to 70 percent of its volume occupied by (beta)-Si3N4 whiskers.
摘要翻译：用金属或可结晶玻璃渗透多孔，自增强（β）-Si3N4预型体，以产生复合材料。预制棒具有低玻璃相，密度为理论密度的50-70％。通过对由（α）-Si 3 N 4粉末组合物形成的多孔体进行两次连续的热处理来制备（β）-Si 3 N 4预型体。第一次热处理发生在（α） - （β） - 转化温度以下，并导致可加工的加强体。第二次热处理发生在该温度以上，并产生自增强（β）-Si3N4预制件。具有金属或玻璃的渗透剂的常规渗透程序导致Si3N4 /金属或Si3N4 /玻璃复合材料，其具有（β）-Si 3 N 4晶须占据其体积的50％至70％。

24. 发明申请

WO1993001323A1 B4C/Al CERMETS AND METHOD FOR MAKING SAME 审中-公开
标题翻译： B4C / Al CERMETS及其制造方法
公开(公告)号：WO1993001323A1
公开(公告)日：1993-01-21
申请号：PCT/US1991004802
申请日：1991-07-08
申请人： THE DOW CHEMICAL COMPANY
发明人： THE DOW CHEMICAL COMPANY , PYZIK, Aleksander, J. , NILSSON, Robert, T.
IPC分类号： C22C29/02
CPC分类号： C04B41/009 , C04B35/652 , C04B41/507 , C04B41/515 , C04B41/5155 , C04B41/87 , C04B41/88 , C22C1/1036 , C22C29/062 , C04B41/4556 , C04B35/563 , C04B35/65 , C04B38/00
摘要： Reactive ceramic-metal compositions are described that include a ceramic phase of at least 70 percent by volume, 95 percent of theoretical density, and a metal phase that retains its chemical reactivity with the ceramic phase after the composition has been fully densified. The composition may be heat treated after densification to form additional ceramic phases in a controllable manner. Preferred ceramic metal compositions wherein the metal and ceramic components retain reactivity after densification include boron carbide ceramic and Al or Mg metals. The process employed in forming said compositions requires first forming a sintered porous body of the ceramic material followed by contacting with the metal component, which may be in chip or solid bar form. The system is then heated to the melting point of the metal and a pressure of at least 200 MPa is employed such that the porous body is filled with metal and the composition is substantially fully densified. Subsequent heating reacts the metal with the ceramic to form additional B-C-metal phases as desired.
摘要翻译：描述了活性陶瓷 - 金属组合物，其包括至少70体积％，理论密度的95％的陶瓷相和在组合物完全致密化后保持其与陶瓷相的化学反应性的金属相。组合物可以在致密化之后进行热处理，以可控的方式形成额外的陶瓷相。其中金属和陶瓷组分在致密化后保持反应性的优选陶瓷金属组合物包括碳化硼陶瓷和Al或Mg金属。用于形成所述组合物的方法需要首先形成陶瓷材料的烧结多孔体，然后与金属组分接触，金属组分可以是片状或固体棒形式。然后将该系统加热到金属的熔点，并且使用至少200MPa的压力，使得多孔体填充金属并且组合物基本上完全致密化。随后加热使金属与陶瓷反应，形成额外的B-C金属相。

25. 发明申请

WO1992014685A2 A DENSE, SELF-REINFORCED SILICON NITRIDE CERAMIC PREPARED BY PRESSURELESS OR LOW PRESSURE GAS SINTERING 审中-公开
标题翻译：通过无压或低压气体烧结制备的DENSE，自增强硅氮化硅
公开(公告)号：WO1992014685A2
公开(公告)日：1992-09-03
申请号：PCT/US1992000082
申请日：1992-01-06
申请人： THE DOW CHEMICAL COMPANY
发明人： THE DOW CHEMICAL COMPANY , PYZIK, Aleksander, J.
IPC分类号： C04B35/58
CPC分类号： C04B35/593 , C04B35/584 , C04B35/5935 , C04B35/645 , C04B35/806
摘要： A dense, self-reinforced silicon nitride ceramic prepared by pressureless sintering or low pressure gas sintering. The composition comprises (a) silicon nitride, at least 20 percent of which is in the form of beta -silicon nitride whiskers having a high average aspect ratio, (b) from 2 to 10 weight percent of a glassy grain boundary phase containing magnesium oxide, yttrium oxide, silica, zirconia, and optionally, one oxide selected from the group consisting of calcium, gallium, indium and hafnium oxides, and (c) a second crystalline phase in an amount ranging from 0.5 to 5.0 weight percent comprising zirconium oxide, and (d) crystalline phases of metal zirconium silicide and/or metal zirconium silicon nitride in a combined amount from 0.1 to 3.0 weight percent, wherein the metal is tantalum, calcium, hafnium, gallium or indium, and wherein, when the metal is calcium, hafnium, gallium or indium, the same metal occurs as the metal oxide in glassy phase. The ceramic exhibits high fracture toughness and high fracture strength and has a density of at least 98 percent theoretical.
摘要翻译：通过无压烧结或低压气体烧结制备的致密的自增强氮化硅陶瓷。组合物包含（a）氮化硅，其中至少20％是具有高平均纵横比的β-硅氮化物晶须的形式，（b）含有氧化镁的玻璃状晶界相的2至10重量％，氧化钇，二氧化硅，氧化锆和任选的一种选自钙，镓，铟和铪氧化物的氧化物，和（c）含量为0.5-5.0重量％的第二结晶相，其包含氧化锆，和（d）金属硅化锆和/或金属锆氮化硅的结晶相，其含量为0.1至3.0重量％，其中金属为钽，钙，铪，镓或铟，并且其中当金属为钙时，铪，镓或铟，与玻璃相中的金属氧化物发生相同的金属。该陶瓷具有高断裂韧性和高断裂强度，并具有至少98％的理论密度。

26. 发明申请

WO1991008992A1 SILICON CARBIDE WHISKER REINFORCED CERAMIC COMPOSITES AND METHOD FOR MAKING THE SAME 审中-公开
标题翻译：硅碳化钨增强陶瓷复合材料及其制造方法
公开(公告)号：WO1991008992A1
公开(公告)日：1991-06-27
申请号：PCT/US1990007276
申请日：1990-12-10
申请人： THE DOW CHEMICAL COMPANY
发明人： THE DOW CHEMICAL COMPANY , PYZIK, Aleksander, J.
IPC分类号： C04B35/52
CPC分类号： C04B35/593 , C04B35/80
摘要： Use of a bimodal distribution of ''coarse'' and ''fine'' submicrometer, single crystal, silicon carbide whiskers to reinforce ceramic materials provides an increase in cutting performance over an equal amount of either coarse or fine whiskers. The coarse whiskers have a number average diameter within a range of from 0.5 to less than 1.0 micrometer and the fine whiskers have a number average diameter within a range of 0.1 to less than 0.5 micrometer. The bimodal distribution of whiskers constitutes 5 to 40 volume percent of a resultant whisker-reinforced ceramic composite material. The resultant materials are useful as cutting tools.
摘要翻译：使用“粗”和“细”亚微米，单晶，碳化硅晶须的双峰分布来增强陶瓷材料提供了在相同量的粗晶或细晶须之间的切割性能的增加。粗晶须的数均直径在0.5至小于1.0微米的范围内，细晶须的数均直径在0.1至小于0.5微米的范围内。晶须的双峰分布占所得晶须增强陶瓷复合材料的5〜40体积％。所得材料可用作切削工具。

27. 发明申请

WO1990008612A1 DENSIFICATION OF CERAMIC-METAL COMPOSITES 审中-公开
标题翻译：陶瓷 - 金属复合材料的渗透
公开(公告)号：WO1990008612A1
公开(公告)日：1990-08-09
申请号：PCT/US1989000171
申请日：1989-01-24
申请人： THE DOW CHEMICAL COMPANY
发明人： THE DOW CHEMICAL COMPANY , PECHENIK, Alexander , MCDONALD, Robert, R. , PYZIK, Aleksander, J. , SNYDER, Irving, G., Jr.
IPC分类号： B22F01/00
CPC分类号： C22C29/16 , B22F2998/00 , C22C1/051 , C22C9/00 , C22C21/00 , C22C29/06 , C22C29/12 , C22C29/14 , C22C33/02 , C22C29/062 , C22C29/065
摘要： Substantially dense, void-free ceramic-metal composites are prepared from components characterized by chemical incompatibility and non-wetting behavior. The composites have a final chemistry similar to the starting chemistry and microstructures characterized by ceramic grains similar in size to the starting powder and the presence of metal phase. A method for producing the composites requires forming a homogeneous mixture of ceramic-metal, heating the mixture to a temperature that approximates but is below the temperature at which the metal begins to flow and pressing the mixture at such pressure that compaction and densification of the mixture occurs and an induced temperature spike occurs that exceeds the flowing temperature of the metal such that the mixture is further compacted and densified. The temperature spike and duration thereof remains below that at which significant reaction between metal and ceramic occurs. The method requires pressures of 60-250 kpsi (413 to 1724 MPa) employed at a rate of 5-250 kpsi/second (34 to 1724 MPa).
摘要翻译：由化学不相容性和非润湿性特征的组分制备基本致密的无空隙陶瓷 - 金属复合材料。复合材料具有类似于起始化学和微观结构的最终化学特征，其特征在于与起始粉末大小相似的陶瓷颗粒和金属相的存在。制备复合材料的方法需要形成均匀的陶瓷 - 金属混合物，将混合物加热到接近但低于金属开始流动的温度的温度，并且以混合物的压实和致密化的压力压制混合物发生并且发生超过金属流动温度的感应温度尖峰，使得混合物进一步压实和致密化。温度峰值和持续时间仍然低于金属和陶瓷发生显着反应的温度峰值和持续时间。该方法需要以5-250kpsi /秒（34至1724MPa）的速率使用60-250kpsi（413至1724MPa）的压力。

28. 发明公开

EP0980481A1 BRAKE OR CLUTCH COMPONENTS HAVING A CERAMIC-METAL COMPOSITE FRICTION MATERIAL 失效
标题翻译：制动器或离合器性元素与陶瓷 - 金属摩擦材料
公开(公告)号：EP0980481A1
公开(公告)日：2000-02-23
申请号：EP98918704.2
申请日：1998-04-24
申请人： THE DOW CHEMICAL COMPANY
发明人： JONES, Bart, R. , PRUNIER, Arthur, R., Jr. , PYZIK, Aleksander, J. , DESHMUKH, Uday, V.
IPC分类号： F16D69/02 , C04B37/02
CPC分类号： C04B35/563 , C04B35/65 , C04B37/026 , C04B41/009 , C04B41/51 , C04B41/88 , C04B2235/3217 , C04B2235/3804 , C04B2235/3813 , C04B2235/3817 , C04B2235/3826 , C04B2235/3843 , C04B2235/402 , C04B2235/5436 , C04B2235/6027 , C04B2235/606 , C04B2235/608 , C04B2235/616 , C04B2235/656 , C04B2235/6567 , C04B2235/6581 , C04B2235/661 , C04B2235/663 , C04B2235/75 , C04B2235/77 , C04B2235/785 , C04B2235/80 , C04B2235/95 , C04B2235/96 , C04B2235/9607 , C04B2237/12 , C04B2237/124 , C04B2237/343 , C04B2237/36 , C04B2237/365 , C04B2237/366 , C04B2237/368 , C04B2237/40 , C04B2237/402 , C04B2237/403 , C04B2237/406 , C04B2237/708 , C04B2237/76 , C22C29/02 , C22C29/06 , C22C29/12 , C22C29/14 , C22C29/16 , C22C2204/00 , F16D69/027 , Y10T29/53648 , C04B35/00
摘要： A braking component such as a brake pad, brake rotor, brake drum or clutch disk is comprised of a metal substrate having a friction material laminated on at least a portion of at least one face of the metal substrate, the friction material being a ceramic-metal composite comprised of a metal phase and a ceramic phase dispersed within each other, wherein the ceramic phase is present in an amount of at least about 20 percent by volume of the ceramic-metal composite. In particular, the braking component is a metal substrate, such as aluminum, having laminated thereto a ceramic-metal composite of a dense boron carbide-aluminum composite having high specific heat and low density.

29. 发明公开

EP0896652A1 CERAMIC METAL COMPOSITE BRAKE COMPONENTS AND MANUFACTURE THEREOF 失效
标题翻译：陶瓷金属复合材料刹车部件复合材料及其制备方法
公开(公告)号：EP0896652A1
公开(公告)日：1999-02-17
申请号：EP97923521.0
申请日：1997-05-01
申请人： THE DOW CHEMICAL COMPANY
发明人： PRUNIER, Arthur, R., Jr. , PYZIK, Aleksander, J.
IPC分类号： F16D65 , C04B35 , C04B37 , C04B41 , C22C29 , F16D69
CPC分类号： C04B35/563 , C04B35/65 , C04B37/026 , C04B41/009 , C04B41/51 , C04B41/88 , C04B2235/3217 , C04B2235/3804 , C04B2235/3813 , C04B2235/3817 , C04B2235/3826 , C04B2235/3843 , C04B2235/402 , C04B2235/5436 , C04B2235/6027 , C04B2235/606 , C04B2235/608 , C04B2235/616 , C04B2235/656 , C04B2235/6567 , C04B2235/661 , C04B2235/663 , C04B2235/75 , C04B2235/77 , C04B2235/785 , C04B2235/80 , C04B2235/95 , C04B2235/96 , C04B2235/9607 , C04B2237/12 , C04B2237/36 , C04B2237/40 , C22C29/02 , C22C29/06 , C22C29/12 , C22C29/14 , C22C29/16 , C22C2204/00 , F16D69/027 , C04B35/00
摘要： A brake component wherein at least a portion of said brake component is a ceramic metal composite (CMC), the CMC having an interconnected ceramic phase and a noncontiguous metal phase dispersed within the interconnected ceramic phase. In particular, a CMC of dense boron carbide-aluminum composite having high specific heat and low density is described.

30. 发明公开

EP0406265A1 DENSIFICATION OF CERAMIC-METAL COMPOSITES 失效
标题翻译：压缩陶瓷金属复合材料。
公开(公告)号：EP0406265A1
公开(公告)日：1991-01-09
申请号：EP89903374.0
申请日：1989-01-24
申请人： THE DOW CHEMICAL COMPANY
发明人： PECHENIK, Alexander , MCDONALD, Robert, R. , PYZIK, Aleksander, J. , SNYDER, Irving, G., Jr.
IPC分类号： C22C32 , B22F3 , C22C1 , C22C29
CPC分类号： C22C29/16 , B22F2998/00 , C22C1/051 , C22C9/00 , C22C21/00 , C22C29/06 , C22C29/12 , C22C29/14 , C22C33/02 , C22C29/062 , C22C29/065
摘要： Substantially dense, void-free ceramic-metal composites are prepared from components characterized by chemical incompatibility and non-wetting behavior. The composites have a final chemistry similar to the starting chemistry and microstructures characterized by ceramic grains similar in size to the starting powder and the presence of metal phase. A method for producing the composites requires forming a homogeneous mixture of ceramic-metal, heating the mixture to a temperature that approximates but is below the temperature at which the metal begins to flow and pressing the mixture at such pressure that compaction and densification of the mixture occurs and an induced temperature spike occurs that exceeds the flowing temperature of the metal such that the mixture is further compacted and densified. The temperature spike and duration thereof remains below that at which significant reaction between metal and ceramic occurs. The method requires pressures of 60-250 kpsi (413 to 1724 MPa) employed at a rate of 5-250 kpsi/second (34 to 1724 MPa).

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