摘要:
An electron emissive composition comprises a barium tantalate composition of the formula (Ba 1-x , Ca x , Sr p , D q ) 6 (Ta 1-y , W y , E t , F u , G v , Ca w ) 2 O (11 ± δ) where δ is an amount of about 0 to about -3; and wherein D is either an alkali earth metal ion or an alkaline earth ion; E, F, and G, are alkaline earth ions and/or transition metal ion; x is an amount of up to about 0.7; y is an amount of up to about 1; p and q are amounts of up to about 0.3; and t is an amount of about 0.05 to about 0.10, u is an amount of up to about 0.5, v is an amount of up to about 0.5 and w is an amount of up to about 0.25. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition with a binder; and sintering the barium tantalate composition with the binder at a temperature of about 1000°C to about 1700°C.
摘要:
A discharge lamp which emits light by an electric disacharge by applying an AC voltage between a pair of ceramic cathodes (1) and has a long service life. Each ceramic cathode (1) is constituted of an electron emitting material (3) constituted of a conductive oxide having an aggregate type porous structure which contains a first component composed of at least one element selected out of Ba, Sr, and Ca, a second component composed of at least one element selected out of Zr or Ti, and a third component composed of at least one element selected out of Ta and Nd and a conductor or semiconductor layer which is formed on the surface of the conductive oxide and composed of at least one kind selected out of the carbide, nitride, and oxide of Ta or Nb and a bottomed cylindrical container (2) for storing the material (3). In a valve (4), in addition, an Ar, Ne, Kr, or Xe gas or their mixed gas is sealed under a pressure of 10-170 Torr.
摘要:
A fluorescent lamp with long life for light emission through discharge by alternate voltage between a pair of ceramic cathodes. The lamp is sealed with gas selecting from Argon, Neon, Krypton, Xenon and mixture of the same, with sealing pressure in the range of 10 Torr and 170 Torr.
摘要:
Elektrische Entladungsröhre oder Entladungslampe, insbesondere ein Flachbildschirm, mit ein oder mehreren Niedertemperaturkathoden, die eine Halterung, gegebenenfalls mit einer Heizung oder Kühlung, eine auf der Halterung aufgebrachte leitfähigen Unterschicht, gegebenenfalls ein Substrat mit Dispensionsmaterial und eine Deckschicht mit einer Nanostruktur aus ultrafeinen Partikeln, wobei die Deckschicht eine Oberflächenschicht aus aus einem Emissionsmaterial mit mehreren Komponenten formierten Emitterkomplex hat, umfaßen, zeichnet sich durch hohe Zuverlässigkeit und eine lange Lebensdauer bei üblicher Belastung aus. Die Emission ist stabil, dies begünstigt eine konstante Bildqualität während der gesamten Lebensdauer der Entladungslampe oder Entladungsröhre. Die erfindungsgemäßen Entladungsröhren oder Entladungslampen haben kurze Schaltzeiten und bieten den Vorteil, daß ihre Konstruktion vereinfacht und ihr Energieverbrauch niedrig ist. Ein Verfahren zur Herstellung der erfindungsgemäßen Niedertemperaturkathoden wird angegeben.
摘要:
The electrode for a ceramic cathode fluorescent discharge ensures a high density of electron current, has a high resistance against heat shock, and is less damaged by sputtering. The diameter of a tube using this electrode can be small. The material for the electrode is prepared using 0.5 to 1.5 mol of a first component selected from BaO, CaO or SrO, 0.05 to 0.95 mol of a second component selected from ZrO2 or TiO2, and 0.025 to 0.475 mol of a third component selected from V2O5, Nb2O5, Ta2O5, Sc2O3, Y2O3, La2O3, Dy2O3, Ho2O3, or 0.05 to 0.95 mol of the same selected from HfO2, CrO3, MoO3, WO3. Also, the electrode is fabricated by granulating this material and putting the lump, granular, or porous material in a bottomed cylindrical semiconductor magnetic container, and then, burning and reducing it. The mercury dispenser of the ceramic cathode fluorescent discharge lamp using this electrode is arranged in series between the bottomed semiconductor magnetic cylinder and the lead out section of the lead wire.
摘要:
The electrode for a ceramic cathode fluorescent discharge ensures a high density of electron current, has a high resistance against heat shock, and is less damaged by sputtering. The diameter of a tube using this electrode can be small. The material for the electrode is prepared using 0.5 to 1.5 mol of a first component selected from BaO, CaO or SrO, 0.05 to 0.95 mol of a second component selected from ZrO₂ or TiO₂, and 0.025 to 0.475 mol of a third component selected from V₂O₅, Nb₂O₅, Ta₂O₅, Sc₂O₃, Y₂O₃, La₂O₃, Dy₂O₃, Ho₂O₃, or 0.05 to 0.95 mol of the same selected from HfO₂, CrO₃, MoO₃, WO₃. Also, the electrode is fabricated by granulating this material and putting the lump, granular, or porous material in a bottomed cylindrical semiconductor magnetic container, and then, burning and reducing it. The mercury dispenser of the ceramic cathode fluorescent discharge lamp using this electrode is arranged in series between the bottomed semiconductor magnetic cylinder and the lead out section of the lead wire.
摘要翻译:用于陶瓷阴极荧光放电的电极确保高密度的电子电流,具有高的耐热冲击性,并且被溅射损坏较少。 使用该电极的管的直径可以很小。 使用0.5〜1.5摩尔选自BaO,CaO或SrO的第一成分,0.05〜0.95摩尔的选自ZrO 2或TiO 2的第二成分和0.025〜0.475摩尔的选自V 2 O 5的第3成分来制备电极材料 ,Nb 2 O 5,Ta 2 O 5,Sc 2 O 3,Y 2 O 3,La 2 O 3,Dy 2 O 3,Ho 2 O 3,或0.05〜0.95mol选自HfO 2,CrO 3,MoO 3,WO 3的相同。 此外,通过将该材料制粒并将块状,粒状或多孔材料放入有底圆筒形半导体磁性容器中,然后燃烧和还原,制造电极。 使用该电极的陶瓷阴极荧光放电灯的汞分配器串联布置在有底半导体磁性体筒与引线的引出部分之间。
摘要:
An optical radiation source in the spectrum range from UV to IC based on the gas discharge with a hollow anode is presented. The discharge has been realized in a diode consisting of a cathode and a special type of a hollow anode whose inner apperture surfaces only are conductive. Small surface of the anode aperture and a high density of the discharge current provide a high brightness of the source with the intensive atom and/or ion spectrum.
摘要:
High pressure sodium lamps have been subject to progressive reduction in pressure of contained sodium with attendant reduction in lighting quality. It has now been discovered that modification of lamp components permits the pressure of contained sodium to be maintained at higher. levels. Emission materials enclosed within the lamp are altered to limit reactive oxygen in the lamp atmosphere. A thermionic electrode is equipped with an improved emission mix composition as illustrated in areas B and C of the triaxial plot of Figure 3.
摘要:
It is an object to provide a tungsten alloy containing no thorium which is a radioactive material, which is equal to or higher in emission characteristics than a thorium-containing tungsten alloy, and a discharge lamp, a transmitting tube and a magnetron which use the tungsten alloy. According to one embodiment, a tungsten alloy includes a Hf component within a range of 0.1 wt% or more and 3 wt% or less in terms of HfO 2 .