Batch preparation method for titanium-based air suction element with high porosity

A high-porosity, mass-produced technology, applied in chemical instruments and methods, other chemical processes, metal processing equipment, etc., can solve the problems of titanium-based non-evaporable getter comprehensive performance and mass production capacity gap, and achieve product stability Good performance, low preparation cost and large surface area

Inactive Publication Date: 2017-05-31
DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, research on titanium-molybdenum alloys and titanium-zirconium-vanadium alloys as getters is still in its infancy, and the comprehensive performance and mass production capacity of titanium-based non-evaporable getters still have a large gap compared with foreign countries.

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  • Batch preparation method for titanium-based air suction element with high porosity

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Under the condition of argon protection, according to the weight ratio of 9:1, the volume ratio of titanium powder with a particle size of 25 μm and an average particle size of 45 μm is 1:1:1:1 Molybdenum powder, zirconium vanadium iron powder , the mixture of zirconium aluminum powder and zirconium nickel powder is mixed for 24h until uniform, and the titanium-based raw material is obtained.

[0028] (2) Under the protection of argon, in parts by weight, 19 parts of titanium-based raw materials and 1 part of ammonium bicarbonate with a particle size of 20 μm are uniformly mixed, and 19 parts of organic binder are added, and mixed for 2 hours in total. Stop for 0.5h for 5 minutes to form injection feed, the organic binder is a mixture of paraffin wax, high-density polyethylene, polypropylene and stearic acid, wherein the mass percentage of paraffin wax is 70%, and the mass percentage of high-density polyethylene is 10% , the mass percentage of polypropylene is 10%, ...

Embodiment 2

[0033] (1) Under the condition of argon protection, according to the weight ratio of 7:3, the volume ratio of titanium powder with a particle size of 45 μm and an average particle size of 45 μm is 1:1:1:1 Molybdenum powder, zirconium vanadium iron powder , the mixture of zirconium aluminum powder and zirconium nickel powder is mixed for 24h until uniform, and the titanium-based raw material is obtained.

[0034] (2) Under the protection of argon, by weight, 4 parts of titanium-based raw materials and 1 part of ammonium bicarbonate with a particle size of 25 μm are uniformly mixed, and 1 part of organic binder is added, and mixed for 2 hours in total. Stop for 0.5h for 5 minutes to form injection feed, the organic binder is a mixture of paraffin wax, high-density polyethylene, polypropylene and stearic acid, wherein the mass percentage of paraffin wax is 70%, and the mass percentage of high-density polyethylene is 10% , the mass percentage of polypropylene is 10%, and the balan...

Embodiment 3

[0039] (1) Under the condition of argon protection, according to the weight ratio of 4:1, the volume ratio of titanium powder with a particle size of 30 μm and an average particle size of 45 μm is 1:1:1:1 Molybdenum powder, zirconium vanadium iron powder , the mixture of zirconium aluminum powder and zirconium nickel powder is mixed for 24h until uniform, and the titanium-based raw material is obtained.

[0040](2) Under argon protection, in parts by weight, mix 1 part of titanium-based raw material with 1 part of ammonium bicarbonate with a particle size of 23 μm, add 1 part of organic binder, and mix for 2 hours in total. Stop for 0.5h for 5 minutes to form injection feeding, the organic binder is a mixture of paraffin wax, high-density polyethylene, polypropylene and stearic acid, wherein the mass percentage of paraffin wax is 40%, and the mass percentage of high-density polyethylene is 20% , the mass percentage of polypropylene is 20%, and the balance is stearic acid.

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Abstract

The invention provides a batch preparation method for a titanium-based air suction element with the high porosity. The preparation method comprises the following steps that under the condition of argon protection, titanium powder and a mixture of molybdenum powder, zirconium ferrovanadium powder, zirconium aluminum powder and zirconium nickel powder are evenly mixed, and a titanium-based raw material is obtained; under inert gas protection, the titanium-based raw material and ammonium bicarbonate are evenly mixed, an organic binder bond is added, and an injecting feedstock is formed; the feedstock is deposited on modified metal wires, subjected to forming through isostatic cool pressing and taken out after pressure relief and demoulding, and a blank is formed; under a vacuum state, the blank is stored in trichloro ethylene to be subjected to chemical degreasing treatment and then taken out for cooling, and a chemical degreasing blank is obtained; and the chemical degreasing blank is subjected to high-temperature sintering in a vacuum sintering furnace, cooled and taken out of the vacuum sintering furnace, and then the high-porosity titanium-based air suction element with the porosity being higher than 50% is obtained. According to the titanium-based air suction element with the high porosity, a preparation technique is simple and easy to operate, and the air suction element is high in porosity, good in manipulative performance and excellent in air suction performance.

Description

technical field [0001] The invention belongs to the technical field of getter materials, and in particular relates to a batch preparation method of high-porosity titanium-based getter elements. Background technique [0002] With the rapid development of electronic technology and vacuum technology, people continue to put forward higher requirements for the performance of electronic materials and vacuum materials, and the update and progress of getter materials has become one of the key technologies to promote their development. Getter materials refer to materials that have special activity for certain (certain) gases under certain conditions. Because of its excellent performance, it occupies an irreplaceable important position in the field of electronic vacuum technology. And because of the harsh environmental conditions and strict performance requirements, the improvement of existing getter materials and the development of new getter materials have become the objects of con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/04B22F3/11C22C14/00B01J20/02
CPCB01J20/0211B01J20/0214B01J20/0218B01J20/0225B01J20/0229B01J20/0248C22C14/00B22F3/04B22F3/1025B22F3/1103B22F1/103B22F1/10
Inventor 王海燕
Owner DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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