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81. 发明授权

US5324009A Apparatus for surface hardening of refractory metal workpieces 失效
$Apparatus for surface hardening of refractory metal workpieces$
标题翻译：难熔金属工件表面硬化装置
公开(公告)号：US5324009A
公开(公告)日：1994-06-28
申请号：US960830
申请日：1992-10-14
申请人： Willard E. Kemp
发明人： Willard E. Kemp
IPC分类号： C21D1/53 , C21D1/62 , C23C8/10 , C23C8/24 , C23C8/28 , C22B1/10
CPC分类号： C21D1/53 , C21D1/62 , C23C8/10 , C23C8/24 , C23C8/28
摘要： A process and apparatus for forming a hardened outer shell (40) on a refractory metal workpiece (36) preferably heated in a fluidized bed of metallic oxide particles (38) in an environment of an inert gas and a reactive gas with the reactive gas either oxygen or nitrogen. The workpieces (36) are heated in the fluidized bed to a temperature between 800 F. and 1600 F. for a period of over two hours to form hardened outer shell (40) in two layers (42, 44). Outer layer (42) is an oxide or nitride layer having a thickness (T1) between 10 microns and 25 microns. Inner layer (44) is a case hardened layer of the refractory metal having a thickness (T2) between 25 microns and 75 microns. In one embodiment workpieces (56) may be cold worked by peening from finely divided metal oxide particles (54) to provide a uniform surface texture for subsequent hardening.
摘要翻译：一种用于在耐火金属工件（36）上形成硬化的外壳（40）的方法和装置，优选在惰性气体和与反应气体的反应气体的环境中在金属氧化物颗粒（38）的流化床中加热，氧气或氮气。将工件（36）在流化床中加热到800°F和1600°F之间的温度两个多小时，以形成两层（42,44）中的硬化外壳（40）。外层（42）是厚度（T1）在10微米和25微米之间的氧化物或氮化物层。内层（44）是具有25微米至75微米的厚度（T2）的难熔金属的外壳硬化层。在一个实施例中，工件（56）可以通过从细碎的金属氧化物颗粒（54）喷丸而进行冷加工，以提供用于后续硬化的均匀的表面纹理。

82. 发明授权

US5308412A Method of surface hardening cobalt-chromium based alloys for orthopedic implant devices 失效
标题翻译：用于矫形植入装置的钴铬基合金表面硬化方法
公开(公告)号：US5308412A
公开(公告)日：1994-05-03
申请号：US30912
申请日：1993-03-15
申请人： H. Ravindranath Shetty , Walter H. Ottersberg
发明人： H. Ravindranath Shetty , Walter H. Ottersberg
IPC分类号： A61F2/00 , A61F2/30 , A61F2/36 , A61L27/04 , C23C8/28 , C23C8/34 , B22F1/00
CPC分类号： A61L27/045 , A61F2/30767 , C23C8/28 , C23C8/34 , A61F2/3094 , A61F2/36 , A61F2/3609 , A61F2/367 , A61F2/3676 , A61F2002/30322 , A61F2002/30685 , A61F2002/3082 , A61F2002/30922 , A61F2002/30934 , A61F2250/0026 , A61F2310/00029 , A61F2310/00622 , A61F2310/00754 , A61F2310/00886 , Y10S623/923
摘要： A method of surface hardening cobalt-chromium based orthopedic implant devices, and a cobalt-chromium orthopedic implant device prepared by the disclosed method. An orthopedic implant device made of a cobalt-chromium or cobalt-chromium-molybdenum alloy, such as ASTM F-75 or ASTM F-799 is exposed to molecular nitrogen gas or ionized nitrogen at a process temperature and for a process time duration sufficient to enhance surface hardness and wear resistance properties, without the formation of a measurable nitrogen layer that tends to increase surface roughness and brittleness and diminish wear resistance properties. The process temperature is in the range of 500.degree. F. to 2400.degree. F., preferably about 1400.degree. F., and the process time duration at the preferred process temperature is approximately 48 hours. The hardened surface of the cobalt-chromium-molybdenum implant occurs primarily due to nitride formation and solid solution hardening of the cobalt-chromium-molybdenum with nitrogen and oxygen, by dissolution.
摘要翻译：一种表面硬化基于钴铬的矫形植入装置的方法，以及通过公开的方法制备的钴铬矫形植入装置。由诸如ASTM F-75或ASTM F-799的钴铬或钴 - 铬 - 钼合金制成的矫形植入装置在工艺温度下暴露于分子氮气或电离氮，提高表面硬度和耐磨性能，而不会形成倾向于增加表面粗糙度和脆性并降低耐磨性能的可测量的氮层。工艺温度在500°F至2400°F的范围内，优选约为1400°F，而优选工艺温度下的工艺时间约为48小时。钴 - 钼 - 钼注入的硬化表面主要是由于氮化物形成和钴 - 铬 - 钼与氮和氧的溶解固溶而产生的。

83. 发明授权

US5208069A Method for passivating the inner surface by deposition of a ceramic coating of an apparatus subject to coking, apparatus prepared thereby, and method of utilizing apparatus prepared thereby 失效
标题翻译：通过沉积装置的烧结涂层，制备的装置以及使用其制备的装置的方法来吸收内表面的方法
公开(公告)号：US5208069A
公开(公告)日：1993-05-04
申请号：US783264
申请日：1991-10-28
申请人： Terence J. Clark , Michael J. Hanagan , Richard W. Cruse , Veronika A. Szalai , Stephen J. Rohman , Robert M. Mininni
发明人： Terence J. Clark , Michael J. Hanagan , Richard W. Cruse , Veronika A. Szalai , Stephen J. Rohman , Robert M. Mininni
IPC分类号： C23C8/28 , B01J19/00 , C01B3/24 , C04B41/45 , C10G9/16 , C23C16/32 , C23C16/34 , C23C16/36
CPC分类号： C23C16/325 , B01J19/0026 , C01B3/24 , C04B41/4554 , C10G9/16 , C23C16/345 , C23C16/36
摘要： In order to reduce the rate of coke formation during the industrial pyrolysis of hydrocarbons, the interior surface of the reactor tubes are coated with a thin layer of a ceramic material, said layer being deposited by thermal decomposition of a non-oxygen containing silicon organometallic precursor in the vapor phase, in an inert or reducing gas atmosphere in order to minimize the formation of oxide ceramics.

84. 发明授权

US4948662A Boron nitride coated ceramic fibers and coating method 失效
标题翻译：氮化硼涂层陶瓷纤维和涂层方法
公开(公告)号：US4948662A
公开(公告)日：1990-08-14
申请号：US848539
申请日：1986-04-07
申请人： Frederick H. Simpson , Juris Verzemnieks
发明人： Frederick H. Simpson , Juris Verzemnieks
IPC分类号： C04B35/622 , C04B41/45 , C23C8/28
CPC分类号： C23C8/28 , C04B35/62227 , C04B35/62245 , C04B41/4584 , Y10T428/2916 , Y10T428/2933 , Y10T428/2956 , Y10T442/2975
摘要： Oxide-based ceramic fibers are treated in a novel process to create a substantially uniform boron nitride barrier coating at their surface. The process involves heating the fibers in a nitriding atmosphere at between about 2200-2600.degree. F. to create a BN coating at the surface of the fiber from boron initially within the fiber.
摘要翻译：基于氧化物的陶瓷纤维以新的方法处理，以在它们的表面上形成基本均匀的氮化硼阻挡涂层。该方法包括在约2200-2600°F之间的氮化气氛中加热纤维，以在起始于纤维内的硼的纤维表面产生BN涂层。

85. 发明授权

US3802928A Method for surface hardening steel and cemented carbides 失效
标题翻译：表面硬化钢和硬化碳的方法
公开(公告)号：US3802928A
公开(公告)日：1974-04-09
申请号：US19931071
申请日：1971-11-16
申请人： BOPP A
发明人： BOPP M , BOPP A , BOPP M
IPC分类号： C23C8/08 , C23C8/22 , C23C8/28 , C23C30/00 , C23C11/16
CPC分类号： C23C8/28 , C23C8/08 , C23C8/22 , C23C30/005
摘要： A method of surface hardening materials, especially steel and cemented carbides, wherein the material to be treated while extensively excluding oxygen is brought into contact with a mixture containing approximately 5 - 70 parts by weight borium carbide, 1 - 60 parts by weight anhydrous aluminum oxide, trace amounts up to 6 parts by weight NaBF4 and trace amounts up to 10 parts by weight sodium floride. According to the invention ammonia gas is introduced during treatment temperatures exceeding approximately 400* C.

86. 发明授权

US3111434A Surface hardening of metal body consisting of or containing titanium or zirconium 失效
标题翻译：由钛或锆组成或含有钛或锆的金属体的表面硬化
公开(公告)号：US3111434A
公开(公告)日：1963-11-19
申请号：US4635160
申请日：1960-08-01
申请人： KOBE STEEL LTD
发明人： ZENICHIRO TAKAO , SHIGEO INOMATA , KOICHI NAKANO
IPC分类号： B23K35/32 , C22C16/00 , C23C8/08 , C23C8/24 , C23C8/28 , C23C26/02
CPC分类号： B23K35/325 , C22C16/00 , C23C8/08 , C23C8/24 , C23C8/28 , C23C26/02 , Y10T70/7605

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