THERMALLY STABLE POLYCRYSTALLINE DIAMOND
    2.
    发明申请
    THERMALLY STABLE POLYCRYSTALLINE DIAMOND 审中-公开
    热稳定的多晶金刚石

    公开(公告)号:US20120324801A1

    公开(公告)日:2012-12-27

    申请号:US13167556

    申请日:2011-06-23

    申请人: Zhigang Zak Fang

    发明人: Zhigang Zak Fang

    IPC分类号: B24D3/10 B01J3/06 E21B10/46

    摘要: The present disclosure provides compositions and methods directed to polycrystalline diamond materials. In one embodiment, a polycrystalline diamond material can comprise sintered polycrystalline diamond and a binder alloy, where the binder alloy is a liquid at a sintering temperature of the polycrystalline diamond, forms an intermetallic compound at a low temperature below the sintering temperature, and is substantially all intermetallic phase.

    摘要翻译: 本公开提供了针对多晶金刚石材料的组合物和方法。 在一个实施例中,多晶金刚石材料可以包括烧结多晶金刚石和粘合剂合金,其中粘合剂合金是在多晶金刚石的烧结温度下的液体,在低于烧结温度的低温下形成金属间化合物,并且基本上 所有金属间相。

    Method for making functionally graded cemented tungsten carbide with engineered hard surface
    3.
    发明授权
    Method for making functionally graded cemented tungsten carbide with engineered hard surface 有权
    制造具有工程硬表面的功能梯度硬质合金碳化钨的方法

    公开(公告)号:US08163232B2

    公开(公告)日:2012-04-24

    申请号:US12259685

    申请日:2008-10-28

    IPC分类号: B22F3/24 B22F3/12

    摘要: A method for manufacturing functionally graded cemented tungsten carbide with hard and wear-resistant surface and tough core is described. The said functionally graded cemented tungsten carbide (WC—Co) has a surface layer having a reduced amount of cobalt. Such a hard surface and tough core structure is an example of functionally graded materials in which mechanical properties are optimized by the unique combination of wear-resistance and toughness. WC—Co with reduced-cobalt surface layer may be fabricated through a carburization heat treatment process following conventional liquid phase sintering. The graded WC—Co thus obtained contains no brittle η phase.

    摘要翻译: 描述了一种用于制造具有硬和耐磨表面和韧性芯的功能梯度的硬质合金碳化钨的方法。 所述功能分级的硬质合金碳化钨(WC-Co)具有钴量减少的表面层。 这种坚硬的表面和韧性的芯结构是通过耐磨性和韧性的独特组合优化机械性能的功能梯度材料的实例。 具有还原钴表面层的WC-Co可以通过常规液相烧结后的渗碳热处理工艺制造。 由此获得的分级WC-Co不含脆性& 相。

    PROCESSES FOR IN-SITU COATING OF METALS
    4.
    发明申请
    PROCESSES FOR IN-SITU COATING OF METALS 审中-公开
    金属表面处理工艺

    公开(公告)号:US20110094629A1

    公开(公告)日:2011-04-28

    申请号:US12811069

    申请日:2008-12-31

    IPC分类号: C23C26/00 B32B15/00

    摘要: Processes for coating metal surfaces are disclosed and described. Applying a metal powder (24) to a metal substrate (12) under plasma transferred arc conditions can promote in-situ reaction between these materials. A substantially nonporous intermetallic alloy coating (28) can be formed in this manner and is particularly suited to Fe, Ni, and Co based intermetallic alloys.

    摘要翻译: 公开和描述了用于涂覆金属表面的方法。 在等离子体转移电弧条件下将金属粉末(24)施加到金属基底(12)可以促进这些材料之间的原位反应。 可以以这种方式形成基本上无孔的金属间合金涂层(28),并且特别适用于Fe,Ni和Co基金属间合金。

    FUNCTIONALLY GRADED CEMENTED TUNGSTEN CARBIDE WITH ENGINEERED HARD SURFACE AND THE METHOD FOR MAKING THE SAME
    5.
    发明申请
    FUNCTIONALLY GRADED CEMENTED TUNGSTEN CARBIDE WITH ENGINEERED HARD SURFACE AND THE METHOD FOR MAKING THE SAME 有权
    具有工程硬表面的功能分级硬质合金碳化物及其制造方法

    公开(公告)号:US20100101368A1

    公开(公告)日:2010-04-29

    申请号:US12259685

    申请日:2008-10-28

    IPC分类号: C22C29/08 B22F3/12

    摘要: A method for manufacturing functionally graded cemented tungsten carbide with hard and wear-resistant surface and tough core is described. The said functionally graded cemented tungsten carbide (WC—Co) has a surface layer having a reduced amount of cobalt. Such a hard surface and tough core structure is an example of functionally graded materials in which mechanical properties are optimized by the unique combination of wear-resistance and toughness. WC—Co with reduced-cobalt surface layer may be fabricated through a carburization heat treatment process following conventional liquid phase sintering. The graded WC—Co thus obtained contains no brittle η phase.

    摘要翻译: 描述了一种用于制造具有硬和耐磨表面和韧性芯的功能梯度的硬质合金碳化钨的方法。 所述功能分级的硬质合金碳化钨(WC-Co)具有钴量减少的表面层。 这种坚硬的表面和韧性的芯结构是通过耐磨性和韧性的独特组合优化机械性能的功能梯度材料的实例。 具有还原钴表面层的WC-Co可以通过常规液相烧结后的渗碳热处理工艺制造。 由此获得的分级WC-Co不含脆性& 相。

    Methods for Making Carbide-Metal Nanocomposite Powders
    7.
    发明申请
    Methods for Making Carbide-Metal Nanocomposite Powders 审中-公开
    制备硬质合金纳米复合粉末的方法

    公开(公告)号:US20100035746A1

    公开(公告)日:2010-02-11

    申请号:US12306226

    申请日:2007-06-20

    IPC分类号: C04B35/56

    摘要: This chemical vapor synthesis process was designed so that a metal carbide precursor and a secondary metal precursor are separately or together fed into each evaporator in a reactor by specially designed precursor feeders, either simultaneously or sequentially. The reduction and carburization of the vaporized precursors by gaseous mixtures produces carbide-metal nanocomposite powders. The product can be a very uniform mixture of the constituent powders or a uniform agglomerate, which is important to ensure a high quality of bulk cemented metal carbide product after consolidation and sintering. These nanocomposite powders can be readily characterized using XRD, carbon analyzer and TEM.

    摘要翻译: 这种化学气相合成方法被设计成使得金属碳化物前体和二次金属前体通过特别设计的前体进料器同时或顺序地在反应器中分别或一起进料到每个蒸发器中。 通过气态混合物还原和渗碳蒸发的前体产生碳化物 - 金属纳米复合粉末。 该产品可以是组分粉末或均匀团聚体的非常均匀的混合物,这对于确保在固结和烧结之后的高质量的块状粘结金属碳化物产品是重要的。 这些纳米复合粉末可以使用XRD,碳分析仪和TEM容易地表征。

    Hydrogen Storage in a Combined MxAlH6/M'y(NH2)z System and Methods of Making and Using the Same
    8.
    发明申请
    Hydrogen Storage in a Combined MxAlH6/M'y(NH2)z System and Methods of Making and Using the Same 有权
    组合的MxAlH6 / M'y(NH2)z系统中的氢储存及其制备和使用方法

    公开(公告)号:US20090311171A1

    公开(公告)日:2009-12-17

    申请号:US12282831

    申请日:2007-03-13

    IPC分类号: C01B3/04 C09K3/00 B01J27/24

    CPC分类号: C01B3/0078 Y02E60/324

    摘要: As a promising clean fuel for vehicles, hydrogen can be used for propulsion, either directly or in fuel cells. Hydrogen storage compositions having high storage capacity, good dehydrogenation kinetics, and hydrogen release and uptake reactions which are reversible are disclosed and described. Generally a hydrogen storage composition of a metal aluminum hexahydride and a metal amide can be used. A combined system (Li3AlH6/3LiNH2) with a very high inherent hydrogen capacity (7.3 wt %) can be carried out at moderate temperatures, and with approximately 95% of that inherent hydrogen storage capacity (7.0%) is reversible over repeated cycling of release and uptake.

    摘要翻译: 作为车辆的有前景的清洁燃料,氢气可以直接或在燃料电池中用于推进。 公开和描述了具有高存储容量,良好的脱氢动力学和可逆的氢释放和吸收反应的储氢组合物。 通常可以使用金属铝六氢化物和金属酰胺的储氢组合物。 具有非常高的固有氢容量(7.3重量%)的组合系统(Li 3 AlH 6/3 LiNH 2)可以在中等温度下进行,并且大约95%的固有氢存储容量(7.0%)在释放的重复循环中是可逆的 和吸收。

    LIGHT METAL BASED MATERIAL SYSTEM FOR HYDROGEN STORAGE
    9.
    发明申请
    LIGHT METAL BASED MATERIAL SYSTEM FOR HYDROGEN STORAGE 审中-公开
    基于轻金属的氢储存材料系统

    公开(公告)号:US20080226532A1

    公开(公告)日:2008-09-18

    申请号:US11925380

    申请日:2007-10-26

    IPC分类号: C01B21/00 C01B3/00

    摘要: The invention provides methods, compositions, and systems for a reversible hydrogen storage material. The hydrogen storage material contains a lithium-magnesium compound, having LiMgN in a dehydrogenated state and a hydrogenated lithium magnesium product in a hydrogenated state, where the hydrogenated and dehydrogenated states are reversible. The lithium-magnesium compound is formed by reacting MgH2 and LiNH2 in a substantially inert atmosphere in amounts sufficient to obtain a hydrogen adsorption of at least 3 wt %, and in many cases up to about 8.1 wt %.

    摘要翻译: 本发明提供了用于可逆储氢材料的方法,组合物和系统。 储氢材料含有脱氢状态的LiMgN和处于氢化状态的氢化锂镁产物的氢化和脱氢状态是可逆的锂 - 镁化合物。 在基本上惰性的气氛中使MgH 2 O 2和LiNH 2 H 2反应,其量足以获得至少3重量%的氢吸附量,而在 许多情况下高达约8.1wt%。

    Functionally graded cemented tungsten carbide
    10.
    发明授权
    Functionally graded cemented tungsten carbide 有权
    功能分级硬质合金碳化钨

    公开(公告)号:US07699904B2

    公开(公告)日:2010-04-20

    申请号:US11152716

    申请日:2005-06-14

    申请人: Zhigang Zak Fang

    发明人: Zhigang Zak Fang

    IPC分类号: C22C29/08

    摘要: The present invention is a method for producing functionally graded materials that contain a hard phase that is embedded in a metal matrix phase. The material have a continuous gradient of a matrix metal phase. An example of these types of materials include functionally graded cemented tungsten carbide (the hard phase) that has a continuous gradient of cobalt (the matrix metal) from one reference position, for example, one surface of a part, to another reference position, for example, the opposite surface of the part or within the part. The functionally graded materials are sintered via a liquid phase sintering (LPS) technique. In order to achieve the desired continuous gradient of the matrix metal, an initial gradient of one of the chemical elements of the hard phase is designed and built into the part prior to liquid phase sintering. The exact gradient of the composition material elements that will be required depends on factors such as the desired final matrix metal gradient, the dimension of the part to be made, and the sintering time and temperature.

    摘要翻译: 本发明是一种生产功能梯度材料的方法,该材料含有嵌入在金属基体相中的硬质相。 该材料具有基质金属相的连续梯度。 这些类型的材料的实例包括功能梯度的硬质合金碳化钨(硬相),其具有从一个参考位置(例如,零件的一个表面)到另一个参考位置的钴(基质金属)的连续梯度,用于 例如,部件的相对表面或部件内。 功能梯度材料通过液相烧结(LPS)技术进行烧结。 为了实现基体金属的期望的连续梯度,在液相烧结之前,将硬相的一种化学元素的初始梯度设计并构建到该部分中。 将要求的组成材料元素的精确梯度取决于诸如所需的最终基体金属梯度,要制备的部件的尺寸以及烧结时间和温度的因素。