公开(公告)号：US5064397A

公开(公告)日：1991-11-12

申请号：US482140

申请日：1990-02-16

Applicant: Jan Hasker ,  Jacobus E. Crombeen ,  Petrus A. M. Van Dorst ,  Johannes Van Esdonk ,  Pieter Hokkeling ,  Josef J. Van Lith

Inventor： Jan Hasker ,  Jacobus E. Crombeen ,  Petrus A. M. Van Dorst ,  Johannes Van Esdonk ,  Pieter Hokkeling ,  Josef J. Van Lith

IPC: H01J1/14 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J9/047

Abstract: For maintaining a monolayer of scandium which is necessary for a satisfactory emission on the surface of a scandate cathode, at least the top layer of the cathode is provided with scandium coated with a scandium oxide film. Even after repeated ion bombardment the emission is found to recover up to approximately 90% of the initial value at a current density of ca. 100 A/cm.sup.2.

公开(公告)号：US5006753A

公开(公告)日：1991-04-09

申请号：US271806

申请日：1988-11-15

Applicant: Jan Hasker ,  Jacobus E. Crombeen ,  Anton K. Niessen ,  Henricus J. H. Stoffelen

Inventor： Jan Hasker ,  Jacobus E. Crombeen ,  Anton K. Niessen ,  Henricus J. H. Stoffelen

IPC: H01J1/14 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J1/28

Abstract: By providing at least the top layer of the matrix of a scandate cathode with an alloy or compound which exhibits scandium segregation, a satisfactory recovery for cathodes with a high emission can be achieved after ion bombardment.

公开(公告)号：US4904897A

公开(公告)日：1990-02-27

申请号：US677948

申请日：1984-12-04

Applicant: Johannes Van Esdonk ,  Jan Hasker ,  Jacobus Stoffels

Inventor： Johannes Van Esdonk ,  Jan Hasker ,  Jacobus Stoffels

IPC: H01J1/14 ,  H01J1/20 ,  H01J1/26 ,  H01J9/04

CPC classification number: H01J1/26

Abstract: An oxide cathode comprising a base 1 which consists substantially of titanium and a heater element 5 coated with aluminium oxide 6 to heat the base 1, which bears a porous alkaline earth metal oxide emissive layer 4. When the surface of the titanium base 1 which is opposed to the heater element 5 bears a metal layer 7 consisting at least of one of the metals Pt, Mo, Ta and W, a solution is obtained to the problem occurring in titanium cathodes in that titanium in contact with aluminium oxide is not chemically stable. The metal layer preferably consisits of pure tungsten and is formed by chemical vapour desposition (CVD). The metal layer is preferably from 1 to 10 .mu.m thick.

Abstract translation: 一种氧化物阴极，其包括基本上由钛组成的基体1和涂覆有氧化铝6的加热元件5，以加热承载多孔碱土金属氧化物发射层4的基体1.当钛基1的表面 与加热器元件5相对的是具有至少由金属Pt，Mo，Ta和W中的至少一种构成的金属层7，获得了在钛阴极中发生的问题的解决方案是，与氧化铝接触的钛不是化学稳定的 。 金属层优选地是纯钨，并且通过化学气相沉积（CVD）形成。 金属层的厚度优选为1〜10μm。

公开(公告)号：US4873052A

公开(公告)日：1989-10-10

申请号：US899788

申请日：1986-08-22

Applicant: Jan Hasker ,  Johannes Van Esdonk ,  Wim Kwestroo

Inventor： Jan Hasker ,  Johannes Van Esdonk ,  Wim Kwestroo

IPC: A47J31/44 ,  B65D79/00 ,  H01J1/14 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J9/047

Abstract: A method of manufacturing a scandate dispenser cathode having a matrix (1) at least the top layer of which consists substantially of a mixture of tungsten with scandium oxide or with a mixed oxide comprising scandium oxide. When sintering of the matrix is carried out at a temperature between 1300.degree. and 1700.degree. C., preferably at approximately 1500.degree. C. and in a hydrogen atmosphere, cathodes are obtained having a better recovery after ion bombardment compared with cathodes sintered at 1900.degree. C. Sintering in hydrogen results in a better reproducibility.

Abstract translation: 一种制造钪酸盐分配器阴极的方法，其具有至少其顶层的基体（1）基本上由钨与氧化钪或与包含氧化钪的混合氧化物的混合物组成。 当基体的烧结在1300〜1700℃，优选为约1500℃，在氢气氛中进行时，与1900℃烧结的阴极相比，获得离子轰击后的回收率更好的阴极 在氢气中烧结导致更好的再现性。

公开(公告)号：US4471260A

公开(公告)日：1984-09-11

申请号：US340553

申请日：1982-01-18

Applicant: Jan Hasker ,  Jacobus H. Jacobs ,  Peter Opmeer ,  Johannes A. T. Verhoeven

Inventor： Jan Hasker ,  Jacobus H. Jacobs ,  Peter Opmeer ,  Johannes A. T. Verhoeven

IPC: H01J1/26 ,  H01J1/14 ,  H01J1/15 ,  H01J1/20 ,  H01J1/22 ,  H01J1/24 ,  H01J29/04 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/15 ,  H01J1/20

Abstract: An oxide cathode comprising a metal base substantially consisting of titanium and a heating element for heating said base, on which base a porous layer comprising an alkaline earth metal oxide is provided. The cathode has a comparatively low operating temperature, a short warm up time and a low power requirement.

Abstract translation: 一种氧化物阴极，其包含基本由钛构成的金属基体和用于加热所述基底的加热元件，在该基底上设置包含碱土金属氧化物的多孔层。 阴极的工作温度较低，预热时间短，功率要求低。

公开(公告)号：US4143447A

公开(公告)日：1979-03-13

申请号：US877162

申请日：1978-02-13

Applicant: Jan Hasker ,  Petrus R. VAN Ijzendoorn ,  Hendrik Roelofs

Inventor： Jan Hasker ,  Petrus R. VAN Ijzendoorn ,  Hendrik Roelofs

IPC: H01J61/24 ,  H01J61/10 ,  H01J9/00

CPC classification number: H01J61/10

Abstract: A method for manufacturing a low pressure gas discharge lamp having a body present in the discharge vessel which consists of a longitudinal support which extends into the longitudinal direction of the vessel. The support being provided with fibres which are distributed over the space within the discharge vessel and extend substantially transversely from the support.

Abstract translation: 一种制造低压气体放电灯的方法，该放电灯具有放电容器中存在的主体，该主体由纵向支撑件延伸到容器的纵向方向。 该支撑件设置有分布在放电容器内的空间上的纤维，并且基本上横向于支撑件延伸。