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公开(公告)号：US07153339B2
公开(公告)日：2006-12-26
申请号：US10818782
申请日：2004-04-06
CPC分类号： C22C33/0207 , B22F1/0003
摘要： Metallurgical powder compositions of the present invention include an iron based powder combined with a master alloy powder, as a mechanical property enhancing powder. The addition of master alloy powders has been found to enhance the mechanical properties of the final, sintered, compacted parts made from metallurgical powder compositions, especially at low sintering temperatures. Metallurgical powder compositions include at least about 80 weight percent of an iron-based metallurgical powder and from about 0.10 to about 20 weight percent of a master alloy powder. Master alloy powders include iron and from about 1.0 to about 40 weight percent chromium, and from about 1.0 to about 35 weight percent silicon, based on the weight of the master alloy powder.
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公开(公告)号：US20120255398A1
公开(公告)日：2012-10-11
申请号：US13433408
申请日：2012-03-29
CPC分类号： C22C38/54 , B22F1/0003 , B22F1/0059 , B22F3/16 , B22F9/04 , B22F2301/35 , B22F2304/10 , B22F2998/00 , C22C27/02 , C22C33/0207 , C22C33/0278 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/42 , C22C38/44 , C22C38/46 , C22C33/0264
摘要： Iron-based metallurgical powders comprising vanadium are described, as well as compacted articles made thereof These articles have improved mechanical properties.
摘要翻译： 描述了包含钒的铁基冶金粉末以及由其制成的压实制品。这些制品具有改善的机械性能。
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3.发明授权公开(公告)号：US07322187B2
公开(公告)日：2008-01-29
申请号：US10910151
申请日：2004-08-03
IPC分类号： F16D31/00
CPC分类号： C22C33/0264 , B22F1/0088 , B22F2999/00 , F16F9/535 , H01F1/28 , H01F1/33 , H01F1/447 , Y10T428/2991 , B22F9/082
摘要： The metallurgical powder composition suspensions of the present invention include a magnetic powder having an outer oxide layer suspended in a carrier fluid. Magnetic powders include iron-based powders, such as for example, powders of iron pre-alloyed with other elements. Alloying materials include columbium, silicon, calcium, manganese, magnesium, carbon, boron, aluminum, titanium, molybdenum, chromium, copper, nickel, gold, vanadium, phosphorus, or combinations thereof. Carrier fluids include silicon-based fluids and/or oils, such as hydrocarbon oils. The outer oxide layer includes alloy materials that are reacted/complexed with oxygen. Magnetic powders exhibit low rates of oxidation over a broad temperature range. Articles incorporating metallurgical powder composition suspensions include dampeners having a chamber, a piston that reciprocates in the chamber, and a source of magnetism operatively connected to the chamber. The source of magnetism, when activated, produces a magnetic field that changes the apparent viscosity of the metallurgical powder composition suspension.
摘要翻译： 本发明的冶金粉末组合物悬浮液包括具有悬浮在载体流体中的外部氧化物层的磁性粉末。 磁性粉末包括铁基粉末，例如与其它元素预合金化的铁粉末。 合金材料包括铌，硅，钙，锰，镁，碳，硼，铝，钛，钼，铬，铜，镍，金，钒，磷或其组合。 载体流体包括硅基流体和/或油，例如烃油。 外部氧化物层包括与氧反应/络合的合金材料。 磁粉在宽温度范围内表现出较低的氧化率。 含有冶金粉末组合物悬浮液的制品包括具有室的阻尼器，在腔室中往复运动的活塞和可操作地连接到腔室的磁源。 磁化源在被激活时产生改变冶金粉末组合物悬浮液的表观粘度的磁场。
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公开(公告)号：US09340855B2
公开(公告)日：2016-05-17
申请号：US13433408
申请日：2012-03-29
CPC分类号： C22C38/54 , B22F1/0003 , B22F1/0059 , B22F3/16 , B22F9/04 , B22F2301/35 , B22F2304/10 , B22F2998/00 , C22C27/02 , C22C33/0207 , C22C33/0278 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/42 , C22C38/44 , C22C38/46 , C22C33/0264
摘要： Iron-based metallurgical powders comprising vanadium are described, as well as compacted articles made thereof These articles have improved mechanical properties.
摘要翻译： 描述了包含钒的铁基冶金粉末以及由其制成的压实制品。这些制品具有改善的机械性能。
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公开(公告)号：US20120014827A1
公开(公告)日：2012-01-19
申请号：US13239614
申请日：2011-09-22
CPC分类号： C22C38/18 , B22F2009/0828 , B22F2998/10 , B22F2999/00 , C22C33/0285 , B22F9/082 , B22F1/0059 , B22F3/02 , B22F3/10 , B22F2201/013
摘要： Provided are corrosion resistant metallurgical powder compositions, corrosion resistant compacted articles prepared from metallurgical powder compositions, and methods of preparing the same. Corrosion resistant metallurgical powder compositions include as a major component, an iron-based powder and, as a minor component, alloy additives that include chromium, and carbon. Upon compaction and sintering, the iron-based powder and alloy additives form a dual phase alloy system. The dual phase alloy system is denoted by an admixed martensite and ferrite microstructure. This unique microstructure results in beneficial physical properties, such as for example, high strength, hardness, and ductility, impact energy, and fatigue endurance, while maintaining resistance to corrosion.
摘要翻译： 提供耐腐蚀冶金粉末组合物，由冶金粉末组合物制备的耐腐蚀压实制品及其制备方法。 耐腐蚀冶金粉末组合物包括作为主要组分的铁基粉末和作为次要组分的包括铬和碳的合金添加剂。 在压实和烧结时，铁基粉末和合金添加剂形成双相合金系统。 双相合金系统由混合马氏体和铁素体微观结构表示。 这种独特的微观结构产生有益的物理性能，例如高强度，硬度和延展性，冲击能量和疲劳耐久性，同时保持耐腐蚀性。
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公开(公告)号：US07300489B2
公开(公告)日：2007-11-27
申请号：US10864964
申请日：2004-06-10
IPC分类号： B22F1/00
CPC分类号： C22C32/0089 , C22C33/0228
摘要： Metallurgical powder compositions are provided that include calcium aluminate additives, i.e., calcium aluminate or calcium aluminate containing powders, to enhance the machinability and durability of compacted and sintered parts made therefrom. The compositions generally contain a metal-based powder, such as for example, an iron-based or nickel-based powder, that constitutes the major portion of the composition. Calcium aluminate additives are combined with the metal based powder by, for example, admixing or bonding. Optionally, common alloying powders, lubricants, binding agents, and other powder metallurgy additives can be combined with the metallurgical powder composition. The metallurgical powder composition is used by compacting it in a die cavity to produce a “green” compact that may then be sintered, preferably at relatively high temperatures.
摘要翻译： 提供了包括铝酸钙添加剂，即铝酸钙或含铝酸钙的粉末的冶金粉末组合物，以增强由其制成的压实和烧结部件的机械加工性和耐久性。 组合物通常包含构成组合物主要部分的金属基粉末，例如铁基或镍基粉末。 铝酸钙添加剂通过例如混合或粘合与金属基粉末组合。 任选地，常规的合金粉末，润滑剂，粘合剂和其它粉末冶金添加剂可以与冶金粉末组合物组合。 冶金粉末组合物通过在模腔中压实使用，以产生“绿色”压块，然后可以优选在较高温度下烧结。
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