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Discharge lamp cathode part, and discharge lamp

A technology for cathode components and discharge lamps, which is applied to components of gas discharge lamps, discharge lamps, gas discharge lamps, etc., and can solve problems such as rising costs

Active Publication Date: 2021-08-17
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is the main reason for rising costs

Method used

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  • Discharge lamp cathode part, and discharge lamp
  • Discharge lamp cathode part, and discharge lamp
  • Discharge lamp cathode part, and discharge lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0131] (Examples 1 to 6, Comparative Example 1)

[0132] First, the tungsten part 2 is prepared. Tungsten powder with an average particle size of 3 μm is mixed with an emitter material with an average particle size of 2 μm. At the time of mixing, the mixing container was set in a cylindrical shape and mixed while rotating in the circumferential direction. Then, preliminary sintering and energization sintering are performed. Through this process, a cylindrical sintered body (ingot) is produced. Table 1 shows each condition.

[0133] Table 1

[0134]

[0135] Next, the cylindrical sintered body (ingot) was processed under the processing conditions shown in Table 2. All done by cold working. The tungsten portion 2 is prepared through the above steps.

[0136] Table 2

[0137]

[0138] Next, the refractory metal part 3 is prepared. Tungsten powder having an average particle diameter of 3 μm was sintered to produce the refractory metal part 3 . The three-point bendi...

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Abstract

This discharge lamp cathode part having a wire diameter of 2 to 35 mm comprises: a first section including tungsten and an emitter material, the concentration of the emitter material being 0.1 to 5 mass%; and a second section including a metal different than the emitter material, the concentration of the emitter material being less than 0.1 mass%. In a case in which electron backscatter diffraction analysis is performed for a region that has a unit area of 90 plus 90 um and that is positioned within 1 mm from the center of a cross-section which passes through the center of the first section and which is taken along the length direction of the first section, an area ratio of a tungsten phase, having a crystal orientation whereby an orientation difference with respect to the <101> orientation is -15 to 15 degrees, is greatest in an inverse pole figure map of the length direction.

Description

technical field [0001] Embodiments relate to a cathode member for a discharge lamp and a discharge lamp. Background technique [0002] Discharge lamps are broadly classified into low-pressure discharge lamps and high-pressure discharge lamps. Examples of low-pressure discharge lamps include various arc discharge lamps such as general lighting, special lighting used in roads and tunnels, paint curing equipment, ultraviolet (UV) curing equipment, sterilization equipment, semiconductor light cleaning equipment, etc. discharge lamp. Examples of high-pressure discharge lamps include water treatment equipment, general lighting, outdoor lighting such as stadiums, UV curing equipment, exposure equipment for semiconductors and printed circuit boards, wafer inspection equipment, and high-pressure mercury lamps such as projectors. , metal halide lamps, ultra-high pressure mercury lamps, xenon lamps, sodium lamps, etc. Such discharge lamps are used in various devices such as lighting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J61/06H01J61/067H01J61/073
CPCH01J61/06H01J61/073H01J61/067
Inventor 沟部雅恭青山齐友清宪治中野康彦
Owner KK TOSHIBA