Rhenium tungsten wire emitting material and usage

A technology of emitting material and rhenium tungsten wire, applied in the direction of solid thermionic cathode of discharge tube, discharge lamp, electrical components, etc., can solve the problems of easy brittleness, difficult process control, glass detachment, etc., to achieve good high temperature performance, stable The effect of service life and reliability improvement

Active Publication Date: 2011-05-25
佛山宁宇科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional rhenium tungsten wire electrode main rod material and emitting filament are generally thoriated tungsten materials, which have defects in current tolerance, working stability, etc., and have a short service life. causing air leakage
And because thorium is a radioactive element, the use of thorium tungsten materials will inevitably cause harm to the human body in the process of manufacturing and product use.
It is very easy to become brittle when it is carbonized at a high temperature of 2200°C, resulting in a high scrap rate, and the process is difficult to control. It is also difficult to completely pick out the scrap in the final inspection, and the product reliability is also low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Powder mixing: mix 0.4% (weight percent) of rhenium powder, 99.595% (weight percent) of tungsten powder and 0.005% (weight percent) of thorium powder to obtain rhenium-containing alloy powder;

[0021] (2) The rhenium-containing alloy powder obtained in step (1) is pressed, then sintered at high temperature (2300° C.) or hammer-melted, and further calcined into a rod, and then drawn to obtain a rhenium-tungsten wire emitting material.

Embodiment 2

[0023] During powder mixing, rhenium powder consumption is 21% (weight percentage), tungsten powder consumption is 77% (weight percentage) and thorium powder 2% (weight percentage), other is with embodiment 1.

Embodiment 3

[0025] During powder mixing, rhenium powder consumption is 38% (weight percentage), tungsten powder consumption is 58% (weight percentage) and thorium powder 4% (weight percentage), other is with embodiment 1.

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PUM

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Abstract

The invention discloses a rhenium tungsten wire emitting material and usage. The material is mainly composed of rhenium and tungsten. The product of the invention has stable performance, long service life and favorable glass sealing performance and eliminates material fragility. The invention is mainly applicable to electrode main posts such as HID car xenon lamp, ceramic metal halide lamp and high intensity discharge lamp and preparation of microwave oven transmitting tube transmission lamp filament, light wave oven transmission tube transmission lamp filament, microwave oven magnetron transmission lamp filament or light wave oven magnetron transmission lamp filament.

Description

Technical field: [0001] The invention relates to an emitting material. Background technique: [0002] The traditional rhenium tungsten wire electrode main rod material and emitting filament are generally thoriated tungsten materials, which have defects in current tolerance, working stability, etc., and have a short service life. resulting in air leakage. And because thorium is a radioactive element, the use of thorium tungsten materials will inevitably cause harm to the human body in the process of manufacturing and product use. It is very easy to become brittle when carbonized at a high temperature of 2200°C, resulting in a high scrap rate, and the process is difficult to control. It is also difficult to completely pick out the scrap in the final inspection, and the product reliability is also low. Invention content: [0003] The object of the present invention is to provide a rhenium tungsten wire emitting material with stable operation and good use effect and its appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/04H01J61/073H01J1/14H01J9/04
Inventor 朱惠冲
Owner 佛山宁宇科技股份有限公司
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