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Preparation method of getter

A technology of getter and preparation steps, which is applied in the field of getter preparation, can solve the problems of insufficient suction capacity, cracking and looseness, and low suction rate, and achieve simple preparation steps, not easy to break, and sufficient suction capacity Effect

Inactive Publication Date: 2016-06-22
CHANGZHOU C PE PHOTO ELECTRICITY SCI & TECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: due to the low strength of the current non-evaporable getter, the thermal stress and mechanical load in the use process easily lead to its cracking and loosening, and the phenomenon of de-powdering occurs, and the inhalation rate is low, and the inhalation The disadvantage of insufficient capacity provides a method of taking iron oxide to rust it into ferric oxide, mixing it with aluminum powder and magnesium powder, putting it into a closed box, adding magnesium strips, inflating oxygen, and igniting the magnesium strips for reaction. After pickling and alkali leaching and drying, add organic polar solvent to soak, mix and react with foaming agent, and calcinate in muffle furnace to obtain getter, so as to improve its air absorption rate and air absorption capacity. Purpose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First take by weighing 200g of iron oxide, place it in a dark and humid place for 7 days, spray water in the iron oxide every other day, the spraying amount is 5% of the quality of iron oxide, and get ferric oxide after being placed for 7 days, in parts by weight Calculate, take 45 parts of ferric oxide, 30 parts of aluminum powder and 25 parts of magnesium powder, stir at 120r / min to make it fully mixed, and get a mixed powder; then put the above-mentioned mixed powder into a closed box, Add magnesium tape with 1% of the mixed powder mass, and feed oxygen at the same time, and control the oxygen feed rate to be 22mL / s. When the oxygen content in the airtight box is 88%, stop feeding, ignite the magnesium tape, and seal the reaction for 1h. After the reaction is completed, cool down to normal temperature; collect the mixture obtained after the above reaction, add hydrochloric acid with a mass fraction of 30% to it, make it submerge the mixture for 2cm, soak for 10min, an...

example 2

[0020] First take by weighing 250g of iron oxide, place it in a dark and humid place for 8 days, spray water in the iron oxide every other day, the spraying amount is 6% of the quality of iron oxide, and get ferric oxide after standing for 8 days, in parts by weight Calculate, take 50 parts of ferric oxide, 28 parts of aluminum powder and 22 parts of magnesium powder, stir at 120r / min to make it fully mixed, and get a mixed powder; then put the above-mentioned mixed powder into a closed box, Add magnesium tape with 2% of the mixed powder mass, and feed oxygen at the same time, control the oxygen feed rate to 25mL / s, stop feeding when the oxygen content in the airtight box is 90%, ignite the magnesium tape, and seal the reaction for 1h. After the reaction is completed, cool down to normal temperature; collect the mixture obtained after the above reaction, add hydrochloric acid with a mass fraction of 33% to it, make it submerge the mixture for 3cm, soak for 13min, and then add a...

example 3

[0023] First take 300g of iron oxide by weighing, place it in a dark and humid place for 9 days, spray water in the iron oxide every other day, the spraying amount is 7% of the quality of iron oxide, and get ferric oxide after being placed for 9 days, in parts by weight Calculate, take 55 parts of ferric oxide, 25 parts of aluminum powder and 20 parts of magnesium powder, stir at 120r / min to make it fully mixed, and get a mixed powder; then put the above-mentioned mixed powder into a closed box, Wherein, a magnesium tape with 3% mass of the mixed powder is added, and oxygen is introduced at the same time, and the oxygen feed rate is controlled to be 28mL / s. After the reaction is completed, cool down to normal temperature; collect the mixture obtained after the above reaction, add hydrochloric acid with a mass fraction of 35% to it, make it submerge the mixture for 3 cm, soak for 15 minutes, and then add a concentration of 0.3mol / L sodium hydroxide solution to it after soaking ...

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Abstract

The invention discloses a method for preparing a getter, and belongs to the technical field of getter preparation. In the present invention, ferric oxide is rusted into ferric oxide, mixed with aluminum powder and magnesium powder, put into a closed box, added with magnesium tape, aerated with oxygen, ignited with magnesium tape for reaction, and then acid-washed and alkali-leaked and baked After drying, it is soaked in an organic polar solvent, mixed and reacted with a foaming agent, and calcined in a muffle furnace to obtain a getter. The beneficial effects of the present invention are: the preparation steps of the present invention are simple, the strength of the obtained product is increased by 40-45%, and it is not easy to break, loosen and powder off after use; the air absorption rate is 15% higher than that of other products, the air absorption capacity is sufficient, Good ability.

Description

technical field [0001] The invention relates to a method for preparing a getter, and belongs to the technical field of getter preparation. Background technique [0002] Getter, also known as getter, is a general term for preparations or devices that are used to obtain, maintain vacuum and purify gases, etc., and can effectively absorb certain (species) gas molecules. There are various forms such as powder, dish, ribbon, tube, ring, cup, etc. Getters are widely used in vacuum electronic devices, creating a good working environment for the device, stabilizing the characteristic parameters of the device, and having an important impact on the performance and service life of the device: increasing the vacuum degree of the vacuum device in a short time, in the Eliminate the residual and re-released gas after the exhaust of the device is sealed off and during the aging process, which is beneficial to shorten the exhaust time; maintain a certain degree of vacuum during the storage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/28B01J20/06B01D53/02
CPCB01J20/28016B01D53/02B01J20/0248B01J20/04B01J20/046B01J20/06B01J2220/4806B01J2220/4812
Inventor 陈蓉蓉盛艳花
Owner CHANGZHOU C PE PHOTO ELECTRICITY SCI & TECHN
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