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1.发明授权Process for producing composite agglomerates of molybdenum and molybdenum carbide 失效用于生产钼和碳化钼复合附聚物的方法
公开(公告)号：US4716019A
公开(公告)日：1987-12-29
申请号：US58213
申请日：1987-06-04
申请人： David L. Houck , David J. Port , Jen S. Lee
发明人： David L. Houck , David J. Port , Jen S. Lee
CPC分类号： C22C1/055 , B22F1/0096 , C22C29/06
摘要： A process is disclosed for producing composite agglomerates of molybdenum and molybdenum carbide (Mo.sub.2 C). The process involves forming a relatively uniform mixture of non-agglomerated molybdenum powder and carbon powder having a particle size of no greater than the particle size of the molybdenum powder. The amount of carbon powder is proportional to the amount of molybdenum carbide desired in the composite agglomerate. A slurry is formed of the mixture, an organic binder, and water with the amount of the binder being no greater than about 2% by weight of the mixture; and the powders are agglomerated from the slurry. The agglomerated powders are then classified to remove the major portion of the agglomerates having a size greater than about 170 mesh and less than about 325 mesh from the balance of the agglomerates. The balance of the agglomerates in which the particle size is -170 +325 mesh is then reacted at a temperature of no greater than about 1400.degree. C. for a sufficient time in a non-carbonaceous vessel in a reducing atmosphere to form the composite agglomerates.
摘要翻译： 公开了用于生产钼和钼碳化物（Mo 2 C）的复合附聚物的方法。 该方法包括形成粒径不大于钼粉末的粒径的非团聚的钼粉末和碳粉末的相对均匀的混合物。 碳粉的量与复合附聚物中所需的碳化钼的量成比例。 混合物形成浆料，有机粘合剂和水，粘合剂的量不大于混合物重量的约2％; 粉末从浆料中凝聚。 然后对附聚的粉末进行分级以从附聚物的余量除去具有大于约170目且小于约325目的尺寸的附聚物的主要部分。 然后将粒径为-170±325目的附聚物的余量在不大于约1400℃的温度下在还原气氛中的非碳质容器中反应足够的时间，以形成复合结块体 。
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2.发明授权
公开(公告)号：US4684400A
公开(公告)日：1987-08-04
申请号：US831200
申请日：1986-02-20
申请人： Joseph E. Ritsko , David J. Port , David L. Houck
发明人： Joseph E. Ritsko , David J. Port , David L. Houck
CPC分类号： C23C8/16 , B22F1/025 , C22C32/0031 , C22F1/02
摘要： A method is disclosed for introducing a controlled level of oxygen into agglomerated molybdenum metal powder, involving heating the powder at a sufficient temperature for a sufficient time in the presence of water vapor, and a non-oxidizing atmosphere with the amount of non-oxidizing atmosphere being controlled to produce a partially oxidized molybdenum powder.
摘要翻译： 公开了一种将控制水平的氧引入附聚的钼金属粉末的方法，包括在水蒸气存在下在足够的温度下将粉末加热足够的时间，并且具有非氧化性气氛的非氧化气氛 被控制以产生部分氧化的钼粉末。
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3.发明授权
公开(公告)号：US4624700A
公开(公告)日：1986-11-25
申请号：US831201
申请日：1986-02-20
申请人： David J. Port , David L. Houck , Frank D. Kinney
发明人： David J. Port , David L. Houck , Frank D. Kinney
摘要： A method is disclosed for introducing a controlled level of oxygen into agglomerated molybdenum plasma spray powder. The method involves forming a relatively uniform mixture of agglomerated powders consisting essentially of molybdenum and one or more oxygen containing compounds of molybdenum wherein said mixture has an oxygen content of greater than about 10% by weight and reducing the mixture at a sufficient temperature for a sufficient time to remove a portion of the oxygen therefrom and form a molybdenum powder having an oxygen content of no greater than about about 10% by weight.
摘要翻译： 公开了一种将控制水平的氧引入聚集的钼等离子体喷涂粉末中的方法。 该方法包括形成基本上由钼和一种或多种含氧化合物钼组成的附聚粉末的相对均匀的混合物，其中所述混合物的氧含量大于约10重量％，并将该混合物在足够的温度下还原足够的 时间以从其中除去一部分氧气并形成氧含量不大于约10重量％的钼粉末。
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公开(公告)号：US4028095A
公开(公告)日：1977-06-07
申请号：US672502
申请日：1976-03-31
CPC分类号： C23C4/08 , B22F1/0096
摘要： Free flowing powders, such as for flame spray applications, are produced by spray drying a slurry of finely divided particles of the metal in a solvent-binder system to produce agglomerates, wherein the binder is a soluble compound of the metal. These agglomerates possess sufficient green strength to be screened and exhibit higher apparent densities than comparable powders agglomerated with conventional organic binders. When these powders are heated in a reducing atmosphere above the decomposition temperature of the binder, the binder converts to base metal and harmless by-products, such as nitrogen and water thus avoiding contamination of the product, equipment and work area usually associated with conventional organic binders.
摘要翻译： 通过在溶剂 - 粘合剂体系中喷雾干燥细分散的金属颗粒的浆料来产生自由流动的粉末，例如用于火焰喷涂的粉末，以产生附聚物，其中粘合剂是金属的可溶性化合物。 这些附聚物具有足够的生坯强度以进行筛选并且表现出比用常规有机粘合剂附聚的可比粉末更高的表观密度。 当这些粉末在高于粘合剂分解温度的还原气氛中加热时，粘合剂转化为贱金属和无害的副产物，如氮气和水，从而避免了通常与常规有机物相关的产品，设备和工作区域的污染 粘合剂
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5.发明授权
公开(公告)号：US5000785A
公开(公告)日：1991-03-19
申请号：US325591
申请日：1989-03-20
申请人： David J. Port , Joseph E. Ritsko
发明人： David J. Port , Joseph E. Ritsko
摘要： A method is disclosed for controlling the level of oxygen in molybdenum metal powder, which comprises agglomerating and sintering the molybdenum powder, classifying the resulting agglomerated and sintered molybdenum powder to obtain a particle size of from about -200 to about +325 mesh, contacting the resulting classified powder with a sufficient amount of an aqueous solution of hydrogen peroxide containing from about 1% to about 10% by weight of hydrogen peroxide to yield a molar ratio of H.sub.2 O.sub.2 :Mo of from about 2 to about 5 for sufficient time to achieve an oxygen content in the powder of from about 1% to about 15% by weight wherein the major portion of the oxygen is on the surface of the agglomerates, and removing the resulting hydrogen peroxide-treated molybdenum powder agglomerates from the resulting solution.
摘要翻译： 公开了一种用于控制钼金属粉末中的氧含量的方法，该方法包括使钼粉末凝聚并烧结，对得到的聚集和烧结的钼粉进行分级以获得约-200至约+325目的粒度， 得到具有足量的含有约1％至约10％重量的过氧化氢的过氧化氢水溶液的分级粉末，以产生约2至约5的H 2 O 2 :M摩尔比达足够的时间以达到 粉末中的氧含量为约1重量％至约15重量％，其中氧的主要部分在附聚物的表面上，并从所得溶液中除去得到的过氧化氢处理的钼粉末附聚物。
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公开(公告)号：US3973948A
公开(公告)日：1976-08-10
申请号：US594734
申请日：1975-07-10
CPC分类号： B22F1/0096 , C23C4/08
摘要： Free flowing powders, such as for flame spray applications, are produced by spray drying a slurry of finely divided particles of the metal in a solvent-binder system to produce agglomerates, wherein the binder is a soluble compound of the metal. These agglomerates possess sufficient green strength to be screened and exhibit higher apparent densities than comparable powders agglomerated with conventional organic binders. When these powders are heated in a reducing atmosphere above the decomposition temperature of the binder, the binder converts to base metal and harmless by-products, such as nitrogen and water thus avoiding contamination of the product, equipment and work area usually associated with conventional organic binders.
摘要翻译： 通过在溶剂 - 粘合剂体系中喷雾干燥细分散的金属颗粒的浆料来产生自由流动的粉末，例如用于火焰喷涂的粉末，以产生附聚物，其中粘合剂是金属的可溶性化合物。 这些附聚物具有足够的生坯强度以进行筛选并且表现出比用常规有机粘合剂附聚的可比粉末更高的表观密度。 当这些粉末在高于粘合剂分解温度的还原气氛中加热时，粘合剂转化为贱金属和无害的副产物，如氮气和水，从而避免了通常与常规有机物相关的产品，设备和工作区域的污染 粘合剂
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7.发明授权Cermet plasma flame spray powder, method for producing same and articles produced therefrom 失效金属陶瓷等离子火焰喷涂粉末，其制造方法和由其制造的制品
公开(公告)号：US3960545A
公开(公告)日：1976-06-01
申请号：US561638
申请日：1975-03-24
CPC分类号： C23C4/06 , B22F1/0096 , C22C32/0031
摘要： Plasma flame spray coatings exhibiting improved hardness and wear resistance are produced from flame spray powders comprising spray dried agglomerates of finely divided molybdenum and alumina powder subparticles, wherein the diameters of the agglomerates are at least two times the maximum diameter of the subparticles.
摘要翻译： 显示出改善的硬度和耐磨性的等离子体火焰喷涂剂由包括细分散的钼和氧化铝粉末子颗粒的喷雾干燥的附聚物的火焰喷涂粉末产生，其中附聚物的直径至少是子粒子的最大直径的两倍。
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