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公开(公告)号：US08323372B1
公开(公告)日：2012-12-04
申请号：US09494877
申请日：2000-01-31
IPC分类号： C22C29/00
摘要： Low coefficient of thermal expansion (CTE) cermet compositions of this invention generally comprise a hard phase material and a ductile phase formed from a binder alloy, wherein the binder alloy is specially designed having a CTE that is closely matched to the hard phase material. Hard phase materials used to form low CTE compositions of this invention are selected from the group of carbides consisting of W, Ti, Mo, Nb, V, Si, Hf, Ta, and Cr carbides. The binder alloy is formed from a mixture of metals selected from the group consisting of Co, Ni, Fe, W, Mo, Ti, Ta, V, Nb, C, B, Cr, and Mn. In a preferred embodiment, low CTE compositions comprises WC as the hard phase material, and a ductile phase binder alloy formed from a mixture of Fe, Co, and Ni. The so-formed low CTE composition has a coefficient of thermal expansion that is less than that of conventional WC—Co at the same temperature and having the same metal content, thereby providing improved resistance to thermal shock and thermal fatigue related failure.
摘要翻译： 本发明的低热膨胀系数（CTE）金属陶瓷组合物通常包括由粘合剂合金形成的硬质相和材料，其中粘合剂合金被特别设计成具有与硬相材料紧密匹配的CTE。 用于形成本发明的低CTE组合物的硬相材料选自由W，Ti，Mo，Nb，V，Si，Hf，Ta和Cr碳化物组成的碳化物组。 粘合剂合金由选自Co，Ni，Fe，W，Mo，Ti，Ta，V，Nb，C，B，Cr和Mn的金属的混合物形成。 在优选实施方案中，低CTE组合物包含WC作为硬相材料，以及由Fe，Co和Ni的混合物形成的延性相粘合剂合金。 如此形成的低CTE组合物在相同温度下具有比常规WC-Co低的热膨胀系数，并且具有相同的金属含量，从而提供对热冲击和热疲劳相关故障的改进的抗性。
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公开(公告)号：US08211203B2
公开(公告)日：2012-07-03
申请号：US12189992
申请日：2008-08-12
IPC分类号： B22F1/00
CPC分类号： C22C29/08 , B22F2998/00 , C22C19/07 , B22F1/0014
摘要： A matrix powder for forming a matrix bit body, the matrix powder essentially consisting of a plurality of carbide particles having a particle size distribution of ±20% of a median particle size; and a plurality of metal binder particles is disclosed.
摘要翻译： 一种用于形成基体钻头体的基质粉末，该基质粉末主要由多个碳化物颗粒组成，其粒径分布为中值粒度的±20％; 并且公开了多种金属粘合剂颗粒。
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公开(公告)号：US07845059B2
公开(公告)日：2010-12-07
申请号：US12021131
申请日：2008-01-28
申请人： Gregory T. Lockwood , Thomas W. Oldham , Anthony Griffo , Madapusi K. Keshavan , David A. Conroy
发明人： Gregory T. Lockwood , Thomas W. Oldham , Anthony Griffo , Madapusi K. Keshavan , David A. Conroy
CPC分类号： C22C26/00 , B22F2005/001 , C22C2026/006 , E21B10/46 , Y10T29/49885
摘要： An insert for a drill bit that includes diamond particles disposed in a matrix material, wherein the diamond particles have a contiguity of 15% or less is disclosed. A method of forming a diamond-impregnated cutting structure, that includes loading a plurality of substantially uniformly coated diamond particles into a mold cavity, pre-compacting the substantially uniformly coated diamond particles using a cold-press cycle, and heating the compacted, substantially uniformly coated diamond particles with a matrix material to form the diamond impregnated cutting structure is also disclosed.
摘要翻译： 一种用于钻头的插入件，其包括设置在基体材料中的金刚石颗粒，其中所述金刚石颗粒的接缝度为15％以下。 一种形成金刚石浸渍的切割结构的方法，其包括将多个基本均匀涂覆的金刚石颗粒加载到模具腔中，使用冷压循环对大致均匀涂覆的金刚石颗粒进行预压实，并加热压实的基本均匀的 还公开了具有基质材料以形成金刚石浸渍切割结构的涂覆金刚石颗粒。
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公开(公告)号：US07475743B2
公开(公告)日：2009-01-13
申请号：US11343225
申请日：2006-01-30
IPC分类号： E21B10/00
CPC分类号： E21B10/46 , B22F2005/002 , C22C29/08 , E21B10/55
摘要： A drill bit that includes a bit body formed from a matrix powder and at least one cutting element for engaging a formation, wherein the matrix powder included (a) stoichiometric tungsten carbide particles, (b) cemented tungsten carbide particles, and (c) cast tungsten carbide particles, and wherein after formation with the matrix powder, the bit has an erosion rate of less than 0.001 in/hr, a toughness of greater than 20 ksi(in0.5), and a transverse rupture strength of greater than 140 ksi is disclosed.
摘要翻译： 一种钻头，其包括由基质粉末形成的一个位体和用于接合地层的至少一个切割元件，其中所述基质粉末包括（a）化学计量的碳化钨颗粒，（b）硬质合金碳化物颗粒，和（c）铸造 碳化钨颗粒，并且其中在与基体粉末形成之后，该钻头的侵蚀速率小于0.001英寸/小时，韧性大于20ksi（in.5），横向断裂强度大于140ksi 被披露。
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45.发明申请BARRIER COATED GRANULES FOR IMPROVED HARDFACING MATERIAL USING ATOMIC LAYER DEPOSITION 有权用于使用原子层沉积改进硬化材料的遮蔽涂层颗粒公开(公告)号：US20080314646A1
公开(公告)日：2008-12-25
申请号：US12133918
申请日：2008-06-05
申请人： Gregory T. Lockwood , Guodong Zhan
发明人： Gregory T. Lockwood , Guodong Zhan
CPC分类号： E21B17/1085 , B22F1/02 , B22F7/06 , C22C26/00 , C22C29/02 , C23C30/005 , E21B10/50
摘要： A hardfacing composition for a drill bit that includes an abrasive phase comprising a plurality of abrasive particles having a barrier coating deposited by atomic layer deposition disposed thereon; and a binder alloy is disclosed. Drill bits having hardfacing compositions that include an abrasive phase comprising a plurality of abrasive particles having a barrier coating deposited by atomic layer deposition disposed thereon; and a binder alloy are also disclosed.
摘要翻译： 一种用于钻头的硬化组合物，其包括研磨相，所述磨料相包含多个磨料颗粒，所述磨料颗粒具有通过其上设置的原子层沉积沉积的阻挡涂层; 和粘合剂合金。 具有硬化组合物的钻头，其包括研磨相，所述研磨相包含多个磨料颗粒，所述研磨颗粒具有沉积在其上的原子层沉积沉积的阻挡涂层; 还公开了粘合剂合金。
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