公开(公告)号：US5521016A

公开(公告)日：1996-05-28

申请号：US377559

申请日：1995-01-24

申请人： Aleksander J. Pyzik ,  Uday V. Deshmukh ,  Stephen D. Dunmead ,  Jack J. Ott ,  Timothy L. Allen ,  Harold E. Rossow

发明人： Aleksander J. Pyzik ,  Uday V. Deshmukh ,  Stephen D. Dunmead ,  Jack J. Ott ,  Timothy L. Allen ,  Harold E. Rossow

IPC分类号： C22C1/10 ,  C22C29/06 ,  C22C29/14 ,  B22F3/26

CPC分类号： C22C1/1036 ,  C22C29/062 ,  C22C29/14 ,  Y10T428/12049 ,  Y10T428/12056 ,  Y10T428/12146 ,  Y10T428/12167

摘要： Subject boron carbide to a passivation treatment at a temperature within a range of 1350.degree. C. to less than 1800.degree. C. prior to infiltration with a molten metal such as aluminum. This method allows control of kinetics of metal infiltration and chemical reactions, size of reaction products and connectivity of B.sub.4 C grains and results in cermets having desired mechanical properties.

摘要翻译： 将碳化硼在熔融金属如铝浸渍之前，在1350℃至低于1800℃的温度下进行钝化处理。 这种方法可以控制金属渗透和化学反应的动力学，反应产物的大小和B4C晶粒的连通性，并导致金属陶瓷具有所需的机械性能。

公开(公告)号：US6123797A

公开(公告)日：2000-09-26

申请号：US494125

申请日：1995-06-23

申请人： Aleksander J. Pyzik ,  Jack J. Ott ,  Harold E. Rossow ,  Uday V. Deshmukh

发明人： Aleksander J. Pyzik ,  Jack J. Ott ,  Harold E. Rossow ,  Uday V. Deshmukh

IPC分类号： B32B15/04 ,  B05D1/00 ,  C03C17/00 ,  C04B37/00 ,  C04B37/02 ,  C04B41/45 ,  C04B41/88 ,  C23C24/08 ,  C23C24/10 ,  C23C26/02 ,  B32B31/00

CPC分类号： C04B41/4507 ,  B05D1/00 ,  C03C17/007 ,  C04B37/006 ,  C23C24/10 ,  C23C26/02 ,  C03C2217/42 ,  C03C2217/45 ,  C03C2217/475 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2237/121 ,  C04B2237/366 ,  C04B2237/58 ,  C04B2237/597 ,  C04B2237/61 ,  C04B2237/708 ,  Y10T156/1038

摘要： A method of coating a fluidizable material onto a surface of a substrate, wherein the substrate is not wettable by the fluidizable material includes depositing a layer of powder particles on the surface of the substrate, the powder particles being wettable by the fluidizable material; contacting the fluidizable material to the layer of powder particles; and allowing the fluidizable material to wick between the powder particles and to contact the surface of the substrate.The method of the invention provides a method which requires little or no binders or organic solvents, is applicable to many different ceramic-metal formulations, allows easy control of the thickness of the tape, forms fairly dense tapes so that little or no shrinkage occurs upon densification at elevated temperatures, and does not require undesirably high processing temperatures.

摘要翻译： 一种将可流化材料涂覆在基材表面上的方法，其中所述基材不被所述可流化材料润湿，包括在所述基材的表面上沉积一层粉末颗粒，所述粉末颗粒可被可流化材料润湿; 使可流化材料接触粉末颗粒层; 并且允许可流化材料在粉末颗粒之间吸附并接触基底的表面。 本发明的方法提供了一种需要很少或不需要粘合剂或有机溶剂的方法，可应用于许多不同的陶瓷 - 金属配方，允许容易地控制带的厚度，形成相当密集的带，使得很少或没有收缩发生在 在高温下致密化，并且不需要不希望的高的加工温度。

公开(公告)号：US5312785A

公开(公告)日：1994-05-17

申请号：US63587

申请日：1993-05-18

申请人： Aleksander J. Pyzik ,  Harold E. Rossow

发明人： Aleksander J. Pyzik ,  Harold E. Rossow

IPC分类号： C04B35/81 ,  C04B35/584 ,  C04B35/593 ,  C04B35/80 ,  C04B35/58

CPC分类号： C04B35/806 ,  C04B35/584 ,  C04B35/5935

摘要： A dense, self-reinforced silicon nitride ceramic body and a method of making such body. The body has a composition that includes: (a) silicon nitride; (b) a glassy grain boundary phase containing oxygen, nitrogen, magnesium, yttrium, silicon, zirconium, and at least one of titanium and aluminum; and (c) a second crystalline phase containing zirconium oxide; and (d) crystalline phases of metal zirconium silicide and/or metal zirconium silicon nitride. The ceramic exhibits high fracture toughness and high fracture strength and has a density at least 98 percent of theoretical.

摘要翻译： 一种致密的自增强氮化硅陶瓷体及其制造方法。 身体的组成包括：（a）氮化硅; （b）含有氧，氮，镁，钇，硅，锆和钛和铝中的至少一种的玻璃态晶界相; 和（c）含有氧化锆的第二结晶相; 和（d）金属硅化锆和/或金属氮化硅锆的结晶相。 该陶瓷具有高断裂韧性和高断裂强度，其密度至少为理论值的98％。

公开(公告)号：US5160508A

公开(公告)日：1992-11-03

申请号：US826315

申请日：1992-01-24

申请人： Aleksander J. Pyzik ,  Harold E. Rossow ,  Douglas B. Schwarz ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

发明人： Aleksander J. Pyzik ,  Harold E. Rossow ,  Douglas B. Schwarz ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

IPC分类号： C04B35/593 ,  C04B35/645 ,  C04B35/80

CPC分类号： C04B35/593 ,  C04B35/645 ,  C04B35/806

摘要： A process for preparing a self-reinforced silicon nitride ceramic body of high fracture toughness comprising hot-pressing a powder mixture containing silicon nitride, a densification aid such as sodium oxide, a conversion aid such as lanthanum oxide and a compound, such as gallium oxide, which enhances growth of .beta.-silicon nitride whiskers-under conditions such that densification and the in situ formation of .beta.-silicon nitride whiskers having a high aspect ratio occur. A novel silicon nitride ceramic of high fracture toughness and high fracture strength is disclosed comprising a .beta.-silicon nitride crystalline phase wherein at least about 20 volume percent of the phase is in the form of whiskers having an average aspect ratio of at least about 2.5; a glassy second phase containing the densificaton aid, the conversion aid, the compound which enhances growth of .beta.-silicon nitride whiskers, and an amount of silica; and not greater than about 10 weight percent of the total weight as other phases. The glassy phase may also include a minor amount, e.g., up to 5.0 weight percent, based upon total weight of the ceramic, of aluminum nitride or boron nitride. The glassy phase optionally includes an amount of a secondary reinforcing material such as silicon carbide whiskers.

摘要翻译： 一种制备高断裂韧性的自增强氮化硅陶瓷体的方法，包括热压含有氮化硅的粉末混合物，致密化助剂例如氧化钠，转化助剂如氧化镧和化合物如氧化镓 ，其增强了β-硅氮化物晶须的生长 - 在使得具有高纵横比的β-硅氮化物晶须的致密化和原位形成的条件下。 公开了一种具有高断裂韧性和高断裂强度的新型氮化硅陶瓷，其包括β-氮化硅结晶相，其中该相的至少约20体积百分数为晶须的形式，其平均纵横比为至少约2.5; 含有致密助剂的玻璃质第二相，转化助剂，增强β-硅氮化物晶须生长的化合物和一定量的二氧化硅; 并且不大于作为其它相的总重量的约10重量％。 玻璃相还可以包括少量，例如，基于陶瓷的总重量，至多5.0重量％的氮化铝或氮化硼。 玻璃相任选地包括一定量的第二增强材料，例如碳化硅晶须。

公开(公告)号：US5021372A

公开(公告)日：1991-06-04

申请号：US398801

申请日：1989-08-25

申请人： Aleksander J. Pyzik ,  Douglas B. Schwarz ,  Harold E. Rossow ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

发明人： Aleksander J. Pyzik ,  Douglas B. Schwarz ,  Harold E. Rossow ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

IPC分类号： C04B35/593 ,  C04B35/645 ,  C04B35/80

CPC分类号： C04B35/645 ,  C04B35/593 ,  C04B35/806

摘要： A process for preparing a self-reinforced silicon nitride ceramic body of high fracture toughness comprising hot-pressing a powder mixture containing silicon nitride, a densification aid such as sodium oxide, a conversion aid such as lanthanum oxide and a compound, such as gallium oxide, which enhances growth of .beta.-silicon nitride whiskers-under conditions such that densification and the in situ formation of .beta.-silicon nitride whiskers having a high aspect ratio occur. A novel silicon nitride ceramic of high fracture toughness and high fracture strength is disclosed comprising a .beta.-silicon nitride crystalline phase wherein at least about 20 volume percent of the phase is in the form of whiskers having an average aspect ratio of at least about 2.5; a glassy second phase containing the densification aid, the conversion aid, the compound which enhances growth of .beta.-silicon nitride whiskers, and an amount of silica; and not greater than about 10 weight percent of the total weight as other phases. The glassy phase may also include a minor amount, e.g., up to 5.0 weight percent, based upon total weight of the ceramic, of aluminum nitride or boron nitride.

摘要翻译： 一种制备高断裂韧性的自增强氮化硅陶瓷体的方法，包括热压含有氮化硅的粉末混合物，致密化助剂例如氧化钠，转化助剂如氧化镧和化合物如氧化镓 ，其增强了β-硅氮化物晶须的生长 - 在使得具有高纵横比的β-硅氮化物晶须的致密化和原位形成的条件下。 公开了一种具有高断裂韧性和高断裂强度的新型氮化硅陶瓷，其包括β-氮化硅结晶相，其中该相的至少约20体积百分数为晶须的形式，其平均纵横比为至少约2.5; 含有致密化助剂的玻璃质第二相，转化助剂，增强β-硅氮化物晶须生长的化合物和一定量的二氧化硅; 并且不大于作为其它相的总重量的约10重量％。 玻璃相还可以包括少量，例如，基于陶瓷的总重量，至多5.0重量％的氮化铝或氮化硼。

公开(公告)号：US5118645A

公开(公告)日：1992-06-02

申请号：US572823

申请日：1990-08-24

申请人： Aleksander J. Pyzik ,  Harold E. Rossow ,  Douglas B. Schwarz ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

发明人： Aleksander J. Pyzik ,  Harold E. Rossow ,  Douglas B. Schwarz ,  Donald R. Beaman ,  Barbara M. Pyzik ,  William J. Dubensky

IPC分类号： B23P15/28 ,  C04B35/584 ,  C04B35/593 ,  C04B35/645 ,  C04B35/80

CPC分类号： C04B35/645 ,  C04B35/593 ,  C04B35/806

摘要： A process for preparing a self-reinforced silicon nitride ceramic body of high fracture toughness comprising hot-pressing a powdcer mixture containing silicon nitride, a densification aid such as sodium oxide, a conversion aid such as lanthanum oxide and a compound, such as gallium oxide, which enhances growth of .beta.-silicon nitride whiskers-under conditions such that densification and the in situ formation of .beta.-silicon nitride whiskers having a high aspect ratio occur. A novel silicon nitride ceramic of high fracture toughness and high fracture strength is disclosed comprising a .beta.-silicon nitride crystalline phase wherein at least about 20 volume percent of the phase is in the form of whiskers having an average aspect ratio of at least about 2.5; a glassy second phase containing the densification aid, the conversion aid, the compound which enhances growth of .beta.-silicon nitride whiskers, and an amount of silica; and not greater than about 10 weight percent of the total weight as other phases. The glassy phase may also include a minor amount, e.g., up to 5.0 weight percentg, based upon total weight of the ceramic, of aluminum nitride or boron nitride. The glassy phase optionally includes an amount of a secondary reinforcing material such as silicon carbide whiskers.

摘要翻译： 一种制备高断裂韧性的自增强氮化硅陶瓷体的方法，包括热压含有氮化硅的粉末混合物，致密化助剂如氧化钠，转化助剂如氧化镧和化合物如氧化镓 ，其增强了β-硅氮化物晶须的生长 - 在使得具有高纵横比的β-硅氮化物晶须的致密化和原位形成的条件下。 公开了一种具有高断裂韧性和高断裂强度的新型氮化硅陶瓷，其包括β-氮化硅结晶相，其中该相的至少约20体积百分数为晶须的形式，其平均纵横比为至少约2.5; 含有致密化助剂的玻璃质第二相，转化助剂，增强β-硅氮化物晶须生长的化合物和一定量的二氧化硅; 并且不大于作为其它相的总重量的约10重量％。 玻璃相还可以包括少量，例如，至多5.0重量％，基于陶瓷的总重量，氮化铝或氮化硼。 玻璃相任选地包括一定量的第二增强材料，例如碳化硅晶须。

公开(公告)号：US5145674A

公开(公告)日：1992-09-08

申请号：US693838

申请日：1991-04-30

申请人： George A. Lane ,  Harold E. Rossow

发明人： George A. Lane ,  Harold E. Rossow

IPC分类号： A61K31/28 ,  A61K31/375 ,  A61K31/60 ,  C07C57/30 ,  C07C59/42 ,  C07C59/70 ,  C07F5/06 ,  C07F7/00

CPC分类号： A61K31/60 ,  A61K31/28 ,  A61K31/375 ,  C07C57/30 ,  C07C59/42 ,  C07C59/70 ,  C07F5/069 ,  C07F7/006

摘要： A biologically-active compound which includes an inorganic mixed metal cationic portion having anion exchange properties and an anionic portion containing a biologically-active anion. The mixed metal cationic portion can be an oxide, hydroxide, or both, and can be fully hydrated, partially hydrated, or not hydrated. The biologically-active anion can be, e.g., an antibiotic, an analgesic, an antimicrobial, a pharmaceutical, an antioxidant, or an agricultural chemical such as a herbicide or a pesticide. These biologically-active compounds can have controlled-release properties and can be produced by relatively simple processes, using for the cationic portion relatively common starting materials. These biologically-active compounds are useful, for example, in compositions to form pharmaceuticals, antioxidants, or herbicides, and can be incorporated into a polymeric material to form a shaped body, such as a plastic film which can be utilized to form bags for food storage or transportation. Also included are processes for making the biologically-active compounds.

摘要翻译： 一种生物活性化合物，其包括具有阴离子交换性质的无机混合金属阳离子部分和含有生物活性阴离子的阴离子部分。 混合金属阳离子部分可以是氧化物，氢氧化物或两者，并且可以完全水合，部分水合或不水合。 生物活性阴离子可以是例如抗生素，止痛剂，抗微生物剂，药物，抗氧化剂或农药如除草剂或农药。 这些生物活性化合物可以具有控制释放性质，并且可以通过相对简单的方法制备，使用阳离子部分相对常见的起始材料。 这些生物活性化合物可用于例如形成药物，抗氧化剂或除草剂的组合物中，并且可以并入聚合物材料中以形成成型体，例如可用于形成食品袋的塑料膜 存储或运输。 还包括制备生物活性化合物的方法。

公开(公告)号：US4083890A

公开(公告)日：1978-04-11

申请号：US797284

申请日：1977-05-16

申请人： Stevens S. Drake ,  Harold E. Rossow

发明人： Stevens S. Drake ,  Harold E. Rossow

IPC分类号： C08F299/02 ,  C08F299/04 ,  C08K5/14 ,  C08L67/06

CPC分类号： C08K5/14 ,  C08F299/026 ,  C08F299/045 ,  Y10S525/922

摘要： Unsaturated resin compositions, which are curable at elevated temperatures to temperatures below 0.degree. C and which contain a hydroperoxide as the catalyst and a soluble organic vanadium compound as a cure promoter or accelerator, are retarded against gelation without inhibiting the cure by the addition of a ketone peroxide.

摘要翻译： 在高于0℃的温度下可固化并且含有作为催化剂的氢过氧化物和可溶性有机钒化合物作为固化促进剂或促进剂的不饱和树脂组合物被阻止凝胶化，而不会通过加入 酮过氧化物。

公开(公告)号：US4402846A

公开(公告)日：1983-09-06

申请号：US315802

申请日：1981-10-28

申请人： George A. Lane ,  Harold E. Rossow

发明人： George A. Lane ,  Harold E. Rossow

IPC分类号： C09K5/06 ,  F24H7/00

CPC分类号： C09K5/063

摘要： A reversible liquid/solid phase change composition comprising hydrated Mg(NO.sub.3).sub.2 /MgCl.sub.2, and one or more of Sr(OH).sub.2, Ca(OH).sub.2, CaO or BaO, added to the composition in an effective amount to suppress supercooling of the Mg(NO.sub.3).sub.2 /MgCl.sub.2 liquid phase.

公开(公告)号：US4273666A

公开(公告)日：1981-06-16

申请号：US90784

申请日：1979-11-02

申请人： George A. Lane ,  Harold E. Rossow

发明人： George A. Lane ,  Harold E. Rossow

IPC分类号： C09K5/06

CPC分类号： C09K5/063 ,  Y10S165/902

摘要： A reversible liquid solid phase change composition comprising hydrated Mg(NO.sub.3).sub.2 and one of the group of Sr(OH).sub.2, SrCO.sub.3, Ba(OH).sub.2, BaO, BaCO.sub.3 and/or NaBO.sub.2 added to the composition in an effective amount to suppress supercooling of the MgNO.sub.3 liquid phase.

摘要翻译： 一种可逆液体固相变组合物，其包含水合Mg（NO 3）2和Sr（OH）2，SrCO 3，Ba（OH）2，BaO，BaCO 3和/或NaBO 2中的一种以有效量加入到组合物中 抑制MgNO3液相的过冷。