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Bismuth indium mercury alloy for low-pressure gas discharging lamp

A gas discharge lamp and low pressure technology, applied in the field of bismuth-indium amalgam, can solve problems such as alloy manufacturing difficulties, and achieve the effect of improving stability and high luminous efficiency

Inactive Publication Date: 2007-09-26
何志明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it also adds metals with higher melting points, which brings certain difficulties to the manufacture of alloys.

Method used

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  • Bismuth indium mercury alloy for low-pressure gas discharging lamp

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Experimental program
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Effect test

Embodiment 1

[0011] Embodiment 1: Bismuth-indium amalgam according to mass ratio (m / m) Bi:In:Hg=66:26:8, is made into pellet through melting drop, is applied in the compact fluorescent lamp of 5-13w, average luminous effect ratio Typical bismuth-indium amalgam of Bi:In:Hg=64:31:5 is 2% higher, and the light output stability and consistency of the lamp are good.

Embodiment 2

[0012] Embodiment 2: Bismuth-indium amalgam according to mass ratio (m / m) Bi:In:Hg=66:28:6, is made into pellet through melting drop, is applied in the compact fluorescent lamp of 5-15w, average luminous efficacy ratio Typical bismuth-indium amalgam of Bi:In:Hg=64:31:5 is 2% higher, and the light output stability and consistency of the lamp are good.

Embodiment 3

[0013] Embodiment 3: Bismuth-indium amalgam according to mass ratio (m / m) Bi: In: Hg=82: 15: 3, through melting mold casting into pellets, applied in 13-20w compact fluorescent lamp, the average luminous efficiency is high, The temperature of the liquidus point of the alloy is high, which can be used in the automatic production of circular exhaust machines.

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Abstract

The invention discloses a Bi-In-Hg alloy of low-pressure gas discharge lamp, which is characterized by the following: setting the weight rate of Bi, In and Hg at 66-82:15-28:3-8; controlling mercury vapour pressure in the lamp about 1.0Pa stably between 70 and 110 deg.c; improving luminous efficiency, stability and consistency effectively.

Description

technical field [0001] The invention relates to a solid amalgam material, in particular to a bismuth-indium amalgam for a low-pressure gas discharge lamp. Background technique [0002] Low-pressure gas discharge lamps use ultraviolet rays with a wavelength of 253.7nm to sterilize or excite phosphors to generate visible light. For ordinary straight-tube fluorescent lamps, ultraviolet rays with a wavelength of 253.7nm near the mercury vapor pressure of 0.8Pa have the highest radiation efficiency. For ordinary compact fluorescent lamps Ultraviolet rays with a wavelength of 253.7nm near the mercury vapor pressure of 1.0Pa have the highest radiation efficiency. Low-pressure gas discharge lamps such as compact fluorescent lamps, electrodeless lamps, germicidal lamps, and small-diameter cold-cathode fluorescent lamps have a high tube wall temperature, and the mercury vapor pressure of liquid mercury is much greater than 1.0Pa at high temperatures, and the ultraviolet radiation effi...

Claims

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Application Information

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IPC IPC(8): C22C7/00H01J61/18
Inventor 何志明
Owner 何志明
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