-
公开(公告)号：US5598966A
公开(公告)日：1997-02-04
申请号：US277458
申请日：1994-07-19
摘要： A lower vacuum housing (34) of a sensor dewar (26) is fabricated in a single brazing operation from ceramic and metallic components. The components are assembled with ceramic-to-metal interfaces and metal-to-metal interfaces. Brazing is accomplished by active brazing of the ceramic-to-metal interfaces and non-active brazing of the metal-to-metal interfaces. Specific combinations of active braze alloys and non-active braze alloys are provided for various combinations of dewar materials.
摘要翻译： 在陶瓷和金属部件的单个钎焊操作中制造传感器杜瓦瓶（26）的下部真空壳体（34）。 元件采用陶瓷 - 金属接口和金属 - 金属接口组装。 钎焊是通过陶瓷 - 金属界面的活性钎焊和金属 - 金属界面的非活性钎焊来实现的。 提供活性钎焊合金和非活性钎焊合金的具体组合用于杜瓦瓶材料的各种组合。
-
公开(公告)号：US06156978A
公开(公告)日：2000-12-05
申请号：US277468
申请日：1994-07-20
CPC分类号： H01B17/305 , Y10T29/49165
摘要： An electrical feedthrough (34) is prepared by furnishing an aluminum oxide feedthrough plate (70) and at least one feedthrough pin (80) having a length greater than the thickness of the feedthrough plate (70). A pin bore (78) is formed through the feedthrough plate (70) for each feedthrough pin (80). Each pin bore (78) has a pin bore (78) size greater than the feedthrough pin (80) size, preferably by an amount no greater than that required to permit the penetration of a brazing metal (88) between the pin bore (78) and the feedthrough pin (80). Each feedthrough pin (80) is inserted into its respective pin bore (78) and brazed into place utilizing a metallic active braze alloy (88) and no glassy seal. The feedthrough plate (70) may be simultaneously brazed to a package structure (22) using active or nonactive brazing.
摘要翻译： 通过提供氧化铝馈通板（70）和长度大于馈通板（70）的厚度的至少一个馈通销（80）来制备电馈通（34）。 每个穿通销（80）通过馈通板（70）形成销孔（78）。 每个销孔（78）具有大于馈通销（80）尺寸的销孔（78），优选地不大于允许钎焊金属（88）穿过销孔（78）所需的量 ）和馈通销（80）。 每个馈通销（80）插入到其相应的销孔（78）中，并使用金属活性钎焊合金（88）钎焊到位，并且没有玻璃状密封。 馈通板（70）可以使用有源或非活性钎焊同时钎焊到封装结构（22）。
-
公开(公告)号：US4919291A
公开(公告)日：1990-04-24
申请号：US124220
申请日：1987-11-23
CPC分类号： B23K20/16 , B23K35/007 , H01J9/40
摘要： A hollow, elongated tip-off tube 12 is comprised of a copper substrate having a layer of gold plating diffused into the surface thereof. The gold is applied over a nickel strike and the tube is heated within a vacuum furnace to diffuse the gold into the copper surface. The gold diffused inner surface of the tube is found to have superior self-welding characteristics and increased strength and durability. The nobility of the inner surface resists the formation of an oxide coating thereon which eliminates the need to clean the inner surface of the tube before pinch-off. Thus, the entrapment of residual cleaning chemicals within the pinch-off area is avoided.
摘要翻译： 中空的细长的折回管12由具有扩散到其表面中的镀金层的铜基底构成。 将金施加在镍罢工上，并且在真空炉内加热管以将金扩散到铜表面。 发现管的金扩散内表面具有优异的自焊特性和增加的强度和耐久性。 内表面的高贵度抵抗了其上的氧化物涂层的形成，这消除了在夹紧之前清洁管的内表面的需要。 因此，避免了在夹断区域内残留的清洁化学品的捕获。
-
公开(公告)号：US6107216A
公开(公告)日：2000-08-22
申请号：US989288
申请日：1997-12-12
CPC分类号： F25D19/006 , B32B15/08
摘要： A structure (20) is formed of a first article (22) such as a cold finger (82), a second article (24) such as an electronic component (78) to be affixed to and cooled by the cold finger (82), and a bonding element (26) disposed between and bonding together the first article (22) and the second article (24). The bonding element (26) includes a porous metallic body (28), such as a screen, a mesh, a felt, or a foam, and a mass of resin adhesive (36) impregnated into the metallic body (28). The mass of adhesive (36) contacts and bonds to the first article (22) and to the second article (24), and the porous metallic body (28) forms a substantially continuous, high-conductivity path between the first article (22) and the second article (24).
摘要翻译： 结构（20）由诸如冷指（82）的第一制品（22），诸如电子部件（78）的第二制品（24）形成，以固定并由冷指（82）冷却， ，以及设置在第一制品（22）和第二制品（24）之间并将其结合在一起的结合元件（26）。 接合元件（26）包括浸渍在金属体（28）中的多孔金属体（28），例如筛网，网，毡或泡沫，以及大量的树脂粘合剂（36）。 粘合剂（36）的质量与第一制品（22）和第二制品（24）接触并结合，多孔金属体（28）在第一制品（22）和第二制品 和第二条（24）。
-
公开(公告)号：US5713610A
公开(公告)日：1998-02-03
申请号：US543099
申请日：1995-10-13
CPC分类号： F16L41/14
摘要： A vacuum system (20) includes an enclosure (22) having a vacuum-tight wall (26) and an internally threaded aperture (66) through the wall (26). A tip-off fitting (24) has a base (50) with a bore (52) therethrough, a hollow tube (62) fixed to the base (50) with a vacuum-tight seal, such that an interior (64) of the tube (62) is in communication with the bore (52) in the base (50), and an external thread (58) on the exterior of the base (50). The external thread (58) on the exterior of the base (50) is dimensioned to threadably engage the internal thread (68) on the aperture (66). There is a disengageable vacuum sealant (70) such as a layer of indium metal between the external thread (58) of the base (50) and the internal thread (68) of the aperture (66). The vacuum system (20) is evacuated through the tip-off fitting (24) and sealed by closing off the hollow tube (62). At a later time, the vacuum system can be brought to atmospheric pressure and then reseated by replacing the tip-off fitting with another tip-off fitting and repeating the evacuation and sealing.
摘要翻译： 真空系统（20）包括具有真空密封壁（26）和穿过壁（26）的内螺纹孔（66）的外壳（22）。 一个倒入配件（24）具有一个具有穿过其中的孔（52）的底座（50），一个中空管（62），用一个真空密封的方式固定在基座（50）上，使得内部 管（62）与基座（50）中的孔（52）连通，并且在基座（50）的外部上具有外螺纹（58）。 基座（50）的外部上的外螺纹（58）的尺寸被设计成螺纹接合孔（66）上的内螺纹（68）。 在基座（50）的外螺纹（58）和孔（66）的内螺纹（68）之间存在可脱离的真空密封剂（70），例如铟金属层。 真空系统（20）通过顶端配件（24）抽真空，并通过关闭中空管（62）进行密封。 以后，真空系统可以达到大气压力，然后通过用另一个卸料装置代替卸料装置并重复排气和密封来重新安装。
-
6.发明授权Feedthrough pin and process for its preparation, and electrical feedthrough made therewith 失效馈通引脚及其制备方法以及由此进行的电馈通
公开(公告)号：US5595514A
公开(公告)日：1997-01-21
申请号：US277560
申请日：1994-07-19
CPC分类号： H01R13/521 , H01R13/03 , H01R4/68 , Y10S439/935 , Y10T29/49204
摘要： A feedthrough (34) is formed of a feedthrough plate (44) having at least one bore (46) therethrough and a feedthrough pin (48) hermetically sealed into the bore (46). The feedthrough pin (48) includes an elongated pin (50) having an axis of elongation (52), a recess (54) in at least one end of the pin (50), the recess (54) extending parallel to the axis of elongation (52), and a gold coating (56) within the recess (54). There are preferably a plurality of bores (46) in the feedthrough plate (48) and a corresponding plurality of the feedthrough pins (48). The gold coatings (56) at the ends of the feedthrough pins (48) are desirably lapped to ensure coplanarity and a smooth surface finish especially suited for wire bonding or tab bonding.
摘要翻译： 馈通（34）由具有穿过其中的至少一个孔（46）的馈通板（44）和气密地密封到孔（46）中的馈通销（48）形成。 馈通销（48）包括具有延伸轴线（52）的细长销（50），销（50）的至少一端中的凹部（54），凹部（54）平行于 伸长部分（52）和凹槽（54）内的金涂层（56）。 馈通板（48）中有多个孔（46）和相应的多个馈通销（48）。 理想地，在馈通销（48）的端部处的金涂层（56）重叠以确保共面性和光滑的表面光洁度，特别适用于引线接合或接头接合。
-
公开(公告)号：US5111049A
公开(公告)日：1992-05-05
申请号：US631556
申请日：1990-12-21
CPC分类号： F17C3/085 , F25D19/006 , H01L31/024 , F17C2201/0119 , F17C2203/0395 , F17C2203/0629 , F17C2203/0636 , F17C2223/0161 , F17C2227/0353 , F17C2260/011 , F17C2270/0509
摘要： An infrared detector assembly (10) of the type used in munition and night vision systems having an RF activated getter (50). Such detector assemblies (10) include a tubular coldfinger (22) surrounded by a vacuum and which supports infrared detector array (26) and related components. In accordance with this invention, RF getter (50) is located remote from detector array (26) and engages an inner wall surface (56) of a metallic dewar housing (14). The RF getter (50) is activated via RF inductive heating directly through the metal dewar housing (14) such that sensitive IR detector components and hermetic braze joints are kept below their critical temperature. As a result, the present invention provides longer vacuum life and greater operational reliability of infrared detector assembly (10).
-
公开(公告)号：US4952810A
公开(公告)日：1990-08-28
申请号：US397710
申请日：1989-08-23
CPC分类号： F17C3/085 , F25D19/006 , G01J5/061 , F17C2201/0119 , F17C2203/0395 , F17C2203/0629 , F17C2203/0648 , F17C2223/0161 , F17C2227/0339 , F17C2270/0509
摘要： An infrared detector assembly (10) of the type used in munitions and night vision systems having an improved coldfinger assembly (42). Such detector assemblies (10) include a tubular coldfinger (22) which is surrounded by a vacuum and an end-cap (28) mounted to the coldfinger tube (22) to define a cold end (24) which supports the infrared detector array (30) and related components. In accordance with this invention, the coldfinger tube (22) is a thin-walled titanium cylinder and the end-cap (28) is made of tungsten. The components are metallurgically bonded at the cold end (24) by an active brazing alloy deposited during vacuum furnace brazing. The titanium coldfinger (22) provides the necessary bending stiffness to support cold end components. The tungsten end-cap (28) provides a low distortion, thermally stable focal-plane. The metallurgical bond (46) provides for a hermetic seal which inhibits structural distortion during brazing, and during cyclical cooling of the detector assembly (10).
摘要翻译： 一种用于弹药和夜视系统的红外探测器组件（10），具有改进的冷锋组件（42）。 这种检测器组件（10）包括由真空包围的管状冷指针（22）和安装到冷引导管（22）的端帽（28），以限定支撑红外检测器阵列的冷端（24） 30）和相关组件。 根据本发明，冷引导管（22）是薄壁钛圆筒，端盖（28）由钨制成。 组件通过在真空炉钎焊期间沉积的活性钎焊合金在冷端（24）上冶金结合。 钛冷手指（22）提供必要的弯曲刚度以支持冷端部件。 钨端盖（28）提供低失真，热稳定的焦平面。 冶金结合（46）提供了一种在钎焊期间以及在周期性冷却检测器组件（10）期间抑制结构变形的气密密封件。
-
公开(公告)号：US5386920A
公开(公告)日：1995-02-07
申请号：US108413
申请日：1993-08-18
CPC分类号： B23K20/002 , B23K20/02
摘要： A vacuum package assembly (20) is prepared by self-welding the flanges (32 and 43) of two housings (28 and 36) together under an applied pressure, while the housings (28 and 36) and any enclosed structure or device are contained within an evacuated enclosure. The flanges (32 and 43) are preferably made of copper, with their respective self-welding members (34 and 46) specially prepared to enhance self-welding performance. The preferred treatment for the self-welding members (34 and 46) is to deposit a thin layer of nickel onto the self-welding members (34 and 46 ), deposit a thin layer of gold over the nickel, and heat the bonding member to elevated temperature to interdiffuse the gold into the self-welding member (34 and 46 ).
摘要翻译： 通过在施加的压力下将两个壳体（28和36）的凸缘（32和43）自动焊接在一起，同时壳体（28和36）以及任何封闭的结构或装置被包含在一起来制备真空包装组件（20） 在一个抽真空的外壳内。 凸缘（32和43）优选地由铜制成，其各自的自身焊接部件（34和46）被专门准备以提高自焊性能。 自焊构件（34和46）的优选处理是将镍薄层沉积到自焊构件（34和46）上，在镍上沉积一层薄金层，并将粘结构件加热至 升高温度以将黄金相互扩散到自焊构件（34和46）中。
-
10.发明授权Quick cooldown/low distortion hybrid focal plane array platform for use in infrared detector dewar packages 失效快速接地/低失真混合焦平面阵列平台用于红外探测器DEWAR包
公开(公告)号：US5111050A
公开(公告)日：1992-05-05
申请号：US621419
申请日：1990-12-03
CPC分类号： H01L31/024 , F25D19/006 , G01J5/061 , F25D2400/28
摘要： A radiation detector assembly (20) includes a radiation detector (2), a silicon readout device (3) coupled to the radiation detector, and a platform 13 for supporting from a first major surface (13a) the readout device and the radiation detector. A second major surface (13b) includes a boss (14) for coupling, via an active brazing operation, to a cryogenic cooler. The platform is monolithic structure comprised of aluminum nitride (AlN) and eliminates at least one adhesive joint found in the prior art. AlN is selected because of its inherent material properties including a higher thermal diffusivity, relative to typical ceramic materials, for providing a reduced cooldown time of the detector to cryogenic temperatures. AlN also has a 300K- 77K thermal contraction characteristic that closely matches that of the silicon readout device and a high modulus of elasticity, thereby reducing distortion of the readout device thus minimizing stresses on indium bump interconnects. AlN also has dielectric characteristics that permit thin film metalization of the surface (13a) for providing electrical signal distribution.
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.013 秒)
