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    Bimodal and multimodal dense boride cermets with superior erosion performance
    3.
    发明申请
    Bimodal and multimodal dense boride cermets with superior erosion performance 失效
    具有优良侵蚀性能的双峰和多峰密集硼化物金属陶瓷

    公开(公告)号：US20070128066A1

    公开(公告)日：2007-06-07

    申请号：US11293728

    申请日：2005-12-02

    申请人： ChangMin Chun ,  Narasimha-Rao Bangaru ,  Neeraj Thirumalai ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Peterson ,  Robert Antram ,  Christopher Fowler ,  Emery Lendvai-Lintner

    发明人： ChangMin Chun ,  Narasimha-Rao Bangaru ,  Neeraj Thirumalai ,  Hyun-Woo Jin ,  Jayoung Koo ,  John Peterson ,  Robert Antram ,  Christopher Fowler ,  Emery Lendvai-Lintner

    IPC分类号： C22C29/14

    CPC分类号： C22C29/14 ,  B22F1/0014 ,  B22F2009/043 ,  B22F2998/10 ,  B22F2999/00 ,  Y10T428/12007 ,  B22F1/0003 ,  B22F3/02 ,  B22F3/1021 ,  B22F3/1035 ,  B22F9/04

    摘要： Multimodal cermet compositions comprising a multimodal grit distribution of the ceramic phase and method of making are provided by the present invention. The multimodal cermet compositions include a) a ceramic phase and b) a metal binder phase, wherein the ceramic phase is a metal boride with a multimodal distribution of particles, wherein at least one metal is selected from the group consisting of Group IV, Group V, Group VI elements of the Long Form of The Periodic Table of Elements and mixtures thereof, and wherein the metal binder phase comprises at least one first element selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, and at least second element selected from the group consisting of Cr, Al, Si and Y, and Ti. The method of making multimodal boride cermets includes the steps of mixing multimodal ceramic phase particles and metal phase particles, milling the ceramic and metal phase particles, uniaxially and optionally isostatically pressing the particles, liquid phase sintering of the compressed mixture at elevated temperatures, and finally cooling the multimodal cermet composition. Advantages disclosed by the multimodal cermets are high packing density of the ceramic phase, high fracture toughness and improved erosion resistance at high temperatures up to 1000° C. The disclosed multimodal cermets are suitable in high temperature erosion/corrosion applications in various chemical and petroleum environments.

    摘要翻译： 包含陶瓷相的多峰砂粒分布的多模金属陶瓷组合物及其制造方法由本发明提供。 多峰金属陶瓷组合物包括a）陶瓷相和b）金属粘结相，其中所述陶瓷相是具有多峰颗粒分布的金属硼化物，其中至少一种金属选自第IV族，第V族 元素周期表的Long形式的VI族元素及其混合物，其中金属粘合剂相包含至少一种选自Fe，Ni，Co，Mn及其混合物的第一元素，至少 选自Cr，Al，Si和Y的第二元素和Ti。 制备多峰硼化物金属陶瓷的方法包括以下步骤：将多峰陶瓷相颗粒和金属相颗粒混合，研磨陶瓷和金属相颗粒，单轴和任选地等压挤压颗粒，在高温下液相烧结压缩混合物，最后 冷却多峰金属陶瓷组合物。 多峰金属陶瓷的优点是陶瓷相的高填充密度，高断裂韧性和在高达1000℃的高温下的耐腐蚀性得到改善。所公开的多峰金属陶瓷适用于各种化学和石油环境中的高温侵蚀/腐蚀应用 。

    Large particle size and bimodal advanced erosion resistant oxide cermets
    10.
    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。