公开(公告)号：US06540800B2

公开(公告)日：2003-04-01

申请号：US09732834

申请日：2000-12-07

申请人： Andrew J. Sherman ,  Animesh Bose

发明人： Andrew J. Sherman ,  Animesh Bose

IPC分类号： C09K314

CPC分类号： C09K3/1445

摘要： An abrasive composite particle comprising a cubic abrasive core particle encapsulated within a deposit of hexagonal metallurgical bond forming material comprising at least about 50 volume percent rhenium, ruthenium, osmium or mixtures thereof. The metallurgical bonds serve to retain the core particle in a matrix/binder very strongly. Metallurgical bonds are formed by the encapsulating material taking into solution, at the interface with the cubic abrasive core particle, some element or compound from the abrasive particle such as, for example, carbon or cubic boron nitride, from the core particle. Chemical bonds are not formed between the abrasive particle and the deposit. Suitable abrasive core particles include diamond, cubic carbides, cubic borides, cubic nitrides, cubic oxides, and the like. Conventional fabrication procedures such as chemical vapor deposition are employed to form the metallurgical bond forming deposit on the core particle. The composite abrasive particles are useful in forming articles according to conventional powdered metal processing operations. The articles so formed are useful for their hardness as well as their abrasiveness.

公开(公告)号：US06641918B1

公开(公告)日：2003-11-04

申请号：US09583061

申请日：2000-05-30

申请人： Andrew J. Sherman ,  Animesh Bose

发明人： Andrew J. Sherman ,  Animesh Bose

IPC分类号： B32B516

CPC分类号： C04B41/009 ,  B22F1/025 ,  C04B41/4584 ,  C04B41/52 ,  C04B41/81 ,  C04B41/89 ,  C22C29/08 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2998 ,  C04B41/4531 ,  C04B41/5057 ,  C04B41/5061 ,  C04B41/5031 ,  C04B41/5068 ,  C04B41/522 ,  C04B41/5144 ,  C04B35/56

摘要： Geldhart class C tungsten carbide particles are provided with a discontinuous coating of grain growth inhibitor. Further, the fine tungsten carbide coatings are preferably provided with a continuous coating of another discreet phase material, such as, for example, a continuous coating of cobalt. Compacts produced using such materials are particularly useful as WC—Co hardmetals wherein the compacts are extremely fine grained.

摘要翻译： 格尔达哈特C级碳化钨颗粒具有不连续的晶粒生长抑制剂涂层。 此外，细碳化钨涂层优选设置有另一个分散相材料的连续涂层，例如钴的连续涂层。 使用这种材料生产的压块特别适用于WC-Co硬质合金，其中压块是非常细粒度的。

公开(公告)号：US09486832B2

公开(公告)日：2016-11-08

申请号：US14004372

申请日：2012-03-09

申请人： Andrew J. Sherman ,  P. Greg Engleman ,  Mario Medanic ,  Kurt E. Gilbert

发明人： Andrew J. Sherman ,  P. Greg Engleman ,  Mario Medanic ,  Kurt E. Gilbert

IPC分类号： B05D3/00 ,  C08J7/18 ,  G21H5/00 ,  B05D3/02 ,  C23C24/08 ,  F16L58/08 ,  B23K28/00 ,  B23K31/02

CPC分类号： B23K10/027 ,  B05D3/0254 ,  B23K28/00 ,  B23K31/027 ,  B23K37/0217 ,  B23K37/0531 ,  B23K37/0538 ,  B23K2101/06 ,  B23K2101/10 ,  C23C24/08 ,  F16L58/08 ,  H05B6/80 ,  H05H1/48

摘要： The present invention concerns methods and apparatus for forming a clad product, such as a clad pipe or tube. Particular embodiments include a method for metallurgically bonding cladding material onto a metal substrate, the method including a step of providing a metal substrate comprising a pipe or a tube having a cladding composition arranged along an interior surface of the substrate to form a coated substrate, the interior surface arranged within an interior cavity of the substrate. A further step includes inserting a heat source into an interior cavity of the substrate, the heat source comprising an infrared, microwave, or radio frequency heat source, the heat source being mounted on a heat source-retaining housing, the housing comprising a cantilevered structure. An additional step includes applying heat discharged from the heat source to the coated substrate along the coated interior surface until the cladding composition metallurgically bonds to the substrate.

摘要翻译： 本发明涉及用于形成包覆产品的方法和装置，例如复合管或管。 具体实施方案包括用于将包覆材料冶金结合到金属基底上的方法，所述方法包括提供包括管或管的金属基底的步骤，所述管或管具有沿着所述基底的内表面布置的覆层组合物以形成涂覆的基底， 内表面布置在基底的内腔内。 进一步的步骤包括将热源插入衬底的内腔中，该热源包括红外线，微波或射频热源，该热源安装在热源保持壳体上，该壳体包括悬臂结构 。 附加步骤包括沿着涂覆的内表面将从热源排出的热量施加到涂覆的基底上，直到包层组合物冶金地结合到基底上。

公开(公告)号：US20100203255A1

公开(公告)日：2010-08-12

申请号：US12699779

申请日：2010-02-03

申请人： Andrew J. Sherman

发明人： Andrew J. Sherman

IPC分类号： C23C4/06 ,  B32B5/16 ,  B32B3/10 ,  B29B9/08

CPC分类号： C23C4/06 ,  Y10T428/12097 ,  Y10T428/24893

摘要： A composite body that is spall resistant and comprises a substantially discontinuous cermet phase in a substantially continuous metal rich matrix phase. The composite body is typically bonded to a substrate to form a hardfacing on the substrate. The composite body exhibits ductile phase toughening with a strain to failure of at least about 2 percent, a modulus of elasticity of less than about 46 million pounds per square inch, and a density of less than about 7 grams per cubic centimeter. The metal rich matrix phase between the ceramic rich regions in the composite body has an average minimum span of about 0.5 to 8 microns to allow ductility in the composite body. The composite body has a Vicker's hardness number of greater than approximately 650. The discontinuous cermet phase is in the form of ceramic rich regions embedded within the composite body, and it includes ceramic particles and a cermet binder. The ceramic particles having a Moh's hardness of at least approximately 7.5, a modulus of elasticity of less than approximately 46 million pounds per square inch, and an average particle size of from about 0.1 to 10 microns. The ceramic rich regions exhibit high hardness as compared with the matrix phase.

摘要翻译： 一种复合体，其具有抗剥落性并且在基本上连续的富金属基质相中包含基本上不连续的金属陶瓷相。 复合体通常结合到基底以在基底上形成表面硬化。 复合体表现出韧性相增韧，应变至少为约2％，弹性模量小于约4600万磅/平方英寸，密度小于约7克/立方厘米。 复合体中富陶瓷区域之间富含金属的基体相的平均最小跨度为约0.5至8微米，以允许复合体中的延展性。 复合体具有大于约650的维氏硬度值。不连续的金属陶瓷相是嵌入复合体内的富陶瓷区的形式，其包括陶瓷颗粒和金属陶瓷粘合剂。 陶瓷颗粒的莫氏硬度至少为7.5，弹性模量小于约4600万磅/平方英寸，平均粒度为约0.1至10微米。 与基体相相比，富陶瓷区表现出高的硬度。

公开(公告)号：US07635515B1

公开(公告)日：2009-12-22

申请号：US11099857

申请日：2005-04-06

申请人： Andrew J. Sherman

发明人： Andrew J. Sherman

IPC分类号： B32B9/00

CPC分类号： C23C4/06 ,  C23C4/12 ,  C23C4/185 ,  Y10T428/252

摘要： A heterogeneous body having ceramic rich cermet regions in a more ductile metal matrix. The heterogeneous bodies are formed by thermal spray operations on metal substrates. The thermal spray operations apply heat to a cermet powder and project it onto a solid substrate. The cermet powder is composed of complex composite particles in which a complex ceramic-metallic core particle is coated with a matrix precursor. The cermet regions are generally comprised of complex ceramic-metallic composites that correspond approximately to the core particles. The cermet regions are approximately lenticular shaped with an average width that is at least approximately twice the average thickness. The cermet regions are imbedded within the matrix phase and generally isolated from one another. They have obverse and reverse surfaces. The matrix phase is formed from the matrix precursor coating on the core particles. The amount of heat applied during the formation of the heterogeneous body is controlled so that the core particles soften but do not become so fluid that they disperse throughout the matrix phase. The force of the impact on the surface of the substrate tends to flatten them. The flattened cermet regions tend to be approximately aligned with one another in the body.

摘要翻译： 一种具有陶瓷富集金属陶瓷区域的异质体，在更延展的金属基体中。 异质体通过金属基底上的热喷涂操作形成。 热喷涂操作将热量施加到金属陶瓷粉末并将其投射到固体基底上。 金属陶瓷粉末由复合陶瓷 - 金属芯颗粒用基质前体涂覆的复合复合颗粒组成。 金属陶瓷区域通常由复杂的陶瓷 - 金属复合材料组成，其大致对应于核心颗粒。 金属陶瓷区域近似为透镜状，平均宽度至少为平均厚度的两倍。 金属陶瓷区域嵌入在基质相中并且通常彼此隔离。 它们具有正面和反面。 基质相由核心颗粒上的基质前体涂层形成。 控制在异质体形成期间施加的热量，使得芯颗粒软化，但不会变得如此流体，使其在整个基体相分散。 对基材表面的冲击力往往使它们变平。 平坦的金属陶瓷区域在体内倾向于彼此大致对准。

公开(公告)号：US07041250B2

公开(公告)日：2006-05-09

申请号：US10227142

申请日：2002-08-22

申请人： Andrew J. Sherman ,  Asit Biswas

发明人： Andrew J. Sherman ,  Asit Biswas

IPC分类号： B22F3/00

CPC分类号： B22F3/1035 ,  B22F2998/10 ,  B22F3/04

摘要： A process for producing a binder phase free fine grained refractory metal compact at temperatures that are less than about 80 percent of the melting point of the refractory metal. A refractory metal is mixed with a metallic reagent to produce a mixture with a low melting point, and formed into a preform. The metallic reagent has limited solubility in the solid phase refractory metal. The refractory metal-metallic reagent mixture forms a liquid phase at the boundaries of the refractory metal grains. The metallic reagent diffuses into the boundaries of the refractory grains leaving a solid refractory-reagent phase at the boundaries between the grains. As heating continues at less than about 80 percent of the melting point of the refractory metal, consolidation takes place with minimum grain growth until the solid refractory-reagent phase substantially disappears and a refractory metal compact without a binder phase is recovered. If the refractory metal-metallic reagent preform is compacted to less than about 50 percent of theoretical density, it is possible to recover a microporous compact. At higher compaction rates substantially fully dense compacts are recovered. It is not necessary to apply pressure during the sintering phase.

公开(公告)号：US06298764B1

公开(公告)日：2001-10-09

申请号：US09483238

申请日：2000-01-14

申请人： Andrew J. Sherman ,  Jerry Brockmeyer ,  Gregory Peters ,  Robert H. Tuffias

发明人： Andrew J. Sherman ,  Jerry Brockmeyer ,  Gregory Peters ,  Robert H. Tuffias

IPC分类号： F41A2100

CPC分类号： F41A21/36 ,  F41A21/34

摘要： A muzzle flash and blast suppressor comprising a body of reticulated refractory foam generally surrounding the projectile path adjacent the muzzle of a device. One side of the body of foam is exposed to the pressure within the projectile path just behind the projectile, and the other side is exposed to the unconfined ambient pressure. The foam is required to be possessed of sufficient structural strength to permit its exterior side to be exposed without confinement to the ambient environment. Hot exhaust gasses flowing laterally of the projectile path pass through the body from the high to the low pressure side. In such passage the gasses are cooled by expansion and by contact with the interstices of the body. Debris is filtered out and the pressure is substantially reduced. Typically, the refractory foam has from approximately 30 to 100 pores per inch and is from approximately 90 to 50 percent void volume.

摘要翻译： 枪口闪光和喷射抑制器，其包括通常围绕与设备的枪口相邻的射弹路径的网状耐火泡沫体。 泡沫体的一侧暴露在弹丸后方的弹丸路径内的压力，另一侧暴露于无约束的环境压力。 泡沫需要具有足够的结构强度，以允许其外侧暴露而不限于周围环境。 从射弹路径横向流动的热排气通过机体从高压侧向低压侧。 在这种通道中，气体通过膨胀和与身体的间隙接触而被冷却。 碎片被过滤掉，压力大大降低。 通常，耐火泡沫体具有每英寸约30至100个孔隙，并且具有约90至50％的空隙体积。

公开(公告)号：US08460796B2

公开(公告)日：2013-06-11

申请号：US12699779

申请日：2010-02-03

申请人： Andrew J. Sherman

发明人： Andrew J. Sherman

IPC分类号： B32B3/00 ,  B32B5/16 ,  B32B7/00 ,  B32B9/00 ,  B32B13/04 ,  B32B15/04 ,  B32B19/00 ,  B05D1/08 ,  C23C4/00 ,  H05H1/26 ,  C23C4/04 ,  C23C4/08

CPC分类号： C23C4/06 ,  Y10T428/12097 ,  Y10T428/24893

摘要： A composite body that is spall resistant and comprises a substantially discontinuous cermet phase in a substantially continuous metal rich matrix phase. The composite body is typically bonded to a substrate to form a hardfacing on the substrate. The composite body exhibits ductile phase toughening with a strain to failure of at least about 2 percent, a modulus of elasticity of less than about 46 million pounds per square inch, and a density of less than about 7 grams per cubic centimeter. The metal rich matrix phase between the ceramic rich regions in the composite body has an average minimum span of about 0.5 to 8 microns to allow ductility in the composite body. The composite body has a Vicker's hardness number of greater than approximately 650. The discontinuous cermet phase is in the form of ceramic rich regions embedded within the composite body, and it includes ceramic particles and a cermet binder. The ceramic particles having a Moh's hardness of at least approximately 7.5, a modulus of elasticity of less than approximately 46 million pounds per square inch, and an average particle size of from about 0.1 to 10 microns. The ceramic rich regions exhibit high hardness as compared with the matrix phase.

摘要翻译： 一种复合体，其具有抗剥落性并且在基本上连续的富金属基质相中包含基本上不连续的金属陶瓷相。 复合体通常结合到基底以在基底上形成表面硬化。 复合体表现出韧性相增韧，应变至少为约2％，弹性模量小于约4600万磅/平方英寸，密度小于约7克/立方厘米。 复合体中富陶瓷区域之间富含金属的基体相的平均最小跨度为约0.5至8微米，以允许复合体中的延展性。 复合体具有大于约650的维氏硬度值。不连续的金属陶瓷相是嵌入复合体内的富陶瓷区的形式，其包括陶瓷颗粒和金属陶瓷粘合剂。 陶瓷颗粒的莫氏硬度至少为7.5，弹性模量小于约4600万磅/平方英寸，平均粒度为约0.1至10微米。 与基体相相比，富陶瓷区表现出高的硬度。

公开(公告)号：US20100297432A1

公开(公告)日：2010-11-25

申请号：US12785397

申请日：2010-05-21

申请人： Andrew J. Sherman ,  Peter G. Engleman

发明人： Andrew J. Sherman ,  Peter G. Engleman

IPC分类号： B32B5/02 ,  B05D3/02 ,  B05D1/12 ,  B32B18/00 ,  B32B15/00

CPC分类号： C04B35/5154 ,  B05D2202/10 ,  B05D2601/20 ,  B22F7/04 ,  C04B2235/3813 ,  C04B2235/5436 ,  C22C32/00 ,  Y10T428/25 ,  Y10T428/252

摘要： Composite layers are formed on substrates, particularly heat sensitive substrates. A uniform composite mixture is prepared from powdered nanoscale ceramic phase particulates and a particulate matrix phase precursor that contains a fusible matrix former. The composite mixture is applied to the substrate surface where it forms a composite mixture layer that is thin relative to the substrate. The composite mixture layer is subjected to a rapid high flux heating pulse of energy to fluidize the fusible matrix former, followed by a rapid quenching step that occurs at least in part because of heat transfer to the substrate, but without significantly damaging the overall temper properties of the substrate. The nanoscale ceramic phase is present in the composite layer in an amount that is greater than its percolation threshold, so the resulting fused composite layer does not tend to flow or sag while the matrix former is in the fluid state. Also, the grain size of the matrix is minimized by the presence of the nanoscale ceramic phase.

摘要翻译： 复合层形成在基片上，特别是热敏基片上。 由粉状纳米级陶瓷相颗粒和含有易熔基质成型剂的颗粒状基质相前体制备均匀的复合混合物。 将复合混合物施加到基底表面，其中它形成相对于基底薄的复合混合物层。 将复合混合物层经受快速高通量加热脉冲的能量以使易熔基体成型剂流化，随后进行快速淬火步骤，该淬火步骤至少部分地由于热传递到基底而发生，但不显着损害整体回火性能 的基底。 纳米级陶瓷相以大于其渗滤阈值的量存在于复合层中，因此当基体成型体处于流体状态时，所得到的熔融复合层不会流动或下垂。 此外，通过纳米级陶瓷相的存在使基体的晶粒尺寸最小化。

公开(公告)号：US07560067B2

公开(公告)日：2009-07-14

申请号：US10194187

申请日：2002-07-12

申请人： Andrew J. Sherman

发明人： Andrew J. Sherman

IPC分类号： B22F3/02 ,  B22F3/18 ,  B23K20/12 ,  B22F3/00

CPC分类号： B22F3/093 ,  C23C4/18 ,  C23C24/06

摘要： A method of forming dense articles from metal or metal alloy powders by friction forming. A self supporting shaped deposit of powder is formed on a substrate. Relative movement is established between the shaped deposit and a friction forming tool. The forming end of the friction tool is urged into compressive contact with the shaped deposit so as to generate an amount of heat sufficient to plasticize the deposit and thereby form a dense article. The steps may be repeated to built up the article to any pre-desired thickness. The substrate may be removed to establish a free standing coherent article, or the article may be left tightly bonded to the substrate. The article is very uniform in both thickness and composition, and enjoys substantially full density and a very fine microstructure.

摘要翻译： 通过摩擦成形从金属或金属合金粉末形成致密制品的方法。 在基材上形成自支撑成形的粉末沉积物。 在成型沉积物和摩擦成形工具之间建立相对运动。 摩擦工具的成形端被推压成与成形的沉积物压接，从而产生足以塑化沉积物从而形成致密制品的一定量的热量。 可以重复这些步骤以将制品堆积成任何预期的厚度。 可以去除衬底以建立自立的粘合制品，或者制品可以与基底保持紧密结合。 该制品在厚度和组成上都非常均匀，并且具有基本上全密度和非常精细的微观结构。