利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

83 条记录 (耗时 0.034 秒)

    Bimodal and multimodal dense boride cermets with low melting point binder
    32.
    发明申请
    Bimodal and multimodal dense boride cermets with low melting point binder 有权
    具有低熔点粘合剂的双峰和多峰致密硼化物金属陶瓷

    公开(公告)号：US20090186211A1

    公开(公告)日：2009-07-23

    申请号：US12291899

    申请日：2008-11-14

    申请人： ChangMin Chun ,  Narasimha-Rao Venkata Bangaru

    发明人： ChangMin Chun ,  Narasimha-Rao Venkata Bangaru

    IPC分类号： B32B18/00 ,  C04B35/58 ,  C04B35/56

    CPC分类号： C22C29/14 ,  B22F1/0014 ,  C22C29/005 ,  Y10T428/252

    摘要： Multimodal cermet compositions having lower melting point metal binders and methods of making are provided. The multimodal cermet compositions having a low melting point metal binder include: a) a ceramic phase, and b) a low melting point metal binder phase, wherein the ceramic phase is a metal boride with a multimodal distribution of particles, wherein the metal of the metal boride is chosen from Group IV, Group V, Group VI elements of the Long Form of the Periodic Table of Elements, and mixtures thereof, and wherein the low melting metal binder phase is represented by the formula (DEF), wherein D is a base metal chosen from Fe, Ni, Co, Mn and mixtures thereof, E is an alloying metal comprising Cr, Si, and B, and F is an alloying element chosen from C, N, P, Al, Ga, Ge, As, In, Sn, Sb, Pb, Sc, La, Y, Ce, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Re, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au and mixtures thereof, and wherein said low melting metal binder phase has a melting point less than 1250° C. The multimodal cermet compositions having a low melting point metal binder may be formed by a powder metallurgy process or an infiltration process. One or more advantages of the multimodal cermets with low melting point binder are high packing density of the ceramic phase, high fracture toughness, and improved erosion resistance at high temperatures up to 1000° C. The multimodal cermets with low melting point binder are suitable in high temperature erosion/corrosion applications in various chemical and petroleum environments.

    摘要翻译： 提供了具有较低熔点金属粘合剂和制备方法的多模金属陶瓷组合物。 具有低熔点金属粘合剂的多峰金属陶瓷组合物包括：a）陶瓷相，和b）低熔点金属粘结相，其中所述陶瓷相是具有多峰分布的颗粒的金属硼化物，其中所述金属 金属硼化物选自元素周期表的长形式的IV族，V族，VI族元素及其混合物，其中低熔点金属粘结相由式（DEF）表示，其中D为 选自Fe，Ni，Co，Mn及其混合物的贱金属，E是包含Cr，Si和B的合金金属，F是选自C，N，P，Al，Ga，Ge，As， In，Sn，Sb，Pb，Sc，La，Y，Ce，Ti，Zr，Hf，V，Nb，Ta，Mo，W，Re，Ru，Rh，Ir，Pd，Pt，Cu，Ag，Au和 其混合物，其中所述低熔点金属粘结相的熔点低于1250℃。具有低熔点金属粘合剂的多峰金属陶瓷组合物可以通过粉末冶金法 ess或渗透过程。 具有低熔点粘合剂的多峰金属陶瓷的一个或多个优点是陶瓷相的高填充密度，高断裂韧性和在高达1000℃的高温下改善的耐冲蚀性。具有低熔点粘合剂的多峰金属陶瓷适合于 各种化学和石油环境中的高温侵蚀/腐蚀应用。

    Erosion resistant cermet linings for oil & gas exploration, refining and petrochemical processing applications
    35.
    发明申请
    Erosion resistant cermet linings for oil & gas exploration, refining and petrochemical processing applications 有权
    用于油气勘探，精炼和石化加工应用的耐腐蚀金属陶瓷衬里

    公开(公告)号：US20080003125A1

    公开(公告)日：2008-01-03

    申请号：US11479680

    申请日：2006-06-30

    申请人： John R. Peterson ,  Narasimha-Rao V. Bangaru ,  Robert Lee Antram ,  Christopher John Fowler ,  Neeraj S. Thirumalai ,  ChangMin Chun ,  Emery B. Lendvai-Lintner

    发明人： John R. Peterson ,  Narasimha-Rao V. Bangaru ,  Robert Lee Antram ,  Christopher John Fowler ,  Neeraj S. Thirumalai ,  ChangMin Chun ,  Emery B. Lendvai-Lintner

    IPC分类号： B22F7/00

    CPC分类号： C22C29/04 ,  C22C29/12 ,  C22C29/14 ,  C22C29/16 ,  Y10T29/49826

    摘要： The present invention is directed to a method for protecting metal surfaces in oil & gas exploration and production, refinery and petrochemical process applications subject to solid particulate erosion at temperatures of up to 1000° C. The method includes the step of providing the metal surfaces in such applications with a hot erosion resistant cermet lining or insert, wherein the cermet lining or insert includes a) about 30 to about 95 vol % of a ceramic phase, and b) a metal binder phase, wherein the cermet lining or insert has a HEAT erosion resistance index of at least 5.0 and a K1C fracture toughness of at least 7.0 MPa-m 1/2. The metal surfaces may also be provided with a hot erosion resistant cermet coating having a HEAT erosion resistance index of at least 5.0. Advantages provided by the method include, inter alia, outstanding high temperature erosion and corrosion resistance in combination with outstanding fracture toughness, as well as outstanding thermal expansion compatibility to the base metal of process units. The method finds particular application for protecting process vessels, transfer lines and process piping, heat exchangers, cyclones, slide valve gates and guides, feed nozzles, aeration nozzles, thermo wells, valve bodies, internal risers, deflection shields, sand screen, and oil sand mining equipment.

    摘要翻译： 本发明涉及一种用于在高达1000℃的温度下保护固体颗粒物侵蚀的石油和天然气勘探和生产，炼油和石化工艺应用中的金属表面的保护方法。该方法包括以下步骤： 具有耐热侵蚀金属陶瓷衬里或插入物的这种应用，其中金属陶瓷衬里或插入物包括a）约30至约95体积％的陶瓷相，和b）金属粘合剂相，其中金属陶瓷衬里或插入物具有热 至少5.0的耐冲击性指数和至少7.0MPa-m 1/2的K 1C断裂韧性。 金属表面还可以具有耐热腐蚀金属陶瓷涂层，其耐热侵蚀性指数至少为5.0。 该方法提供的优点尤其包括优异的耐高温侵蚀和耐腐蚀性以及突出的断裂韧性，以及与处理单元的母材的突出的热膨胀相容性。 该方法特别适用于保护过程容器，输送管线和过程管道，热交换器，旋风分离器，滑阀门和引导件，进料嘴，曝气喷嘴，热阱，阀体，内部立管，偏转屏蔽，砂筛和油 采砂设备。

    Large particle size and bimodal advanced erosion resistant oxide cermets
    37.
    发明申请
    Large particle size and bimodal advanced erosion resistant oxide cermets 有权
    大颗粒尺寸和双峰高级耐腐蚀氧化物金属陶瓷

    公开(公告)号：US20070151415A1

    公开(公告)日：2007-07-05

    申请号：US11639692

    申请日：2006-12-15

    申请人： ChangMin Chun ,  Narasimha-Rao Bangaru ,  John Peterson ,  Robert Antram ,  Christopher Fowler

    发明人： ChangMin Chun ,  Narasimha-Rao Bangaru ,  John Peterson ,  Robert Antram ,  Christopher Fowler

    IPC分类号： C22C29/12

    CPC分类号： C22C29/12 ,  C22C32/0015 ,  C22C32/0026 ,  C23C30/00 ,  Y10T428/12007

    摘要： One form of the disclosure includes a cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and a binder phase (RS) wherein, P is a metal selected from the group consisting of Al, Si, Mg, Ca, Y, Fe, Mn, Group IV, Group V, Group VI elements, and mixtures thereof, Q is oxide, R is a base metal selected from the group consisting of Fe, Ni Co, Mn and mixtures thereof, S consists essentially of at least one element selected from Cr, Al and Si and at least one reactive wetting element selected from the group consisting of Ti, Zr, Hf, Ta, Sc, Y, La, and Ce, wherein the ceramic phase (PQ) ranges from about 55 to 95 vol % based on the volume of the cermet and is dispersed in the binder phase (RS) as particles with a diameter of 100 microns or greater. Another form of the disclosure relates to a bimodal size distribution of the metal oxide ceramic phase within the metal matrix phase. The metal oxide cermet compositions disclosed are suitable for high temperature applications requiring superior erosion and corrosion resistance.

    摘要翻译： 一种形式的公开内容包括由式（PQ）（RS）表示的金属陶瓷组合物，其包含：陶瓷相（PQ）和粘结相（RS），其中P是选自Al，Si， Mg，Ca，Y，Fe，Mn，IV族，V族，VI族元素及其混合物，Q为氧化物，R为选自Fe，Ni Co，Mn的贱金属及其混合物，S 基本上由选自Cr，Al和Si中的至少一种元素和选自Ti，Zr，Hf，Ta，Sc，Y，La和Ce中的至少一种反应性润湿元素组成，其中陶瓷相（PQ ）基于金属陶瓷的体积为约55至95体积％，并作为直径为100微米或更大的颗粒分散在粘结相（RS）中。 本公开的另一种形式涉及金属氧化物陶瓷相在金属基质相内的双峰尺寸分布。 所公开的金属氧化物金属陶瓷组合物适合于需要优异的耐腐蚀和耐腐蚀性的高温应用。