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Molybdenum alloy and preparation method thereof

A technology of molybdenum alloy and molybdenum powder, which is applied in the field of molybdenum alloy and its preparation, can solve the problems of short service life, easy oxidation, and poor corrosion resistance of pure molybdenum electrodes, and achieve strong oxidation and corrosion resistance, good performance, and guaranteed glass quality effect

Inactive Publication Date: 2021-01-05
ZIGONG CEMENTED CARBIDE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a molybdenum alloy to solve the problems of poor corrosion resistance, short service life, high temperature and easy oxidation of existing pure molybdenum electrodes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a molybdenum alloy, specifically comprising the following steps:

[0027] The first step ball milling

[0028] ZrH with a mass ratio of 36.5:1 2 Powder and Y 2 o 3 The powder was put into a ball mill tank for ball milling, the ball-to-material ratio was 1.5:1, the speed of the ball mill was 150r / min, and the ball milling time was 15h. Ball milling and sieving to obtain doped zirconium hydride powder.

[0029] Step 2 Mixing

[0030] Put 29.81Kg of pure molybdenum powder, 157.5g of doped zirconium hydride powder, 15g of silicon powder and 15g of boron powder obtained in the first step into the mixer for mixing. The rotation speed of the V-shaped mixer is 25r / min, and the mixing time is 10h to obtain doped molybdenum powder.

[0031] The third step is pressing and sintering

[0032] Put the doped molybdenum powder in the second step into a rubber sleeve, and press it with an isostatic press with a pressing pressure of 180 MPa and a holding tim...

Embodiment 2

[0037] A preparation method of molybdenum alloy, which is different from embodiment 1, specifically comprises the following steps:

[0038] The first step ball milling

[0039] ZrH with a mass ratio of 25:1 2 Powder and Y 2 o 3 The powder was put into a ball mill jar for ball milling, the ball-to-material ratio was 3:1, the ball milling speed was 150r / min, and the ball milling time was 8h. Ball milling and sieving to obtain doped zirconium hydride powder.

[0040] Step 2 Mixing

[0041] Add 28.88Kg of pure molybdenum powder, 970g of doped zirconium hydride powder, 60g of silicon powder and 90g of boron powder obtained in the first step into a V-shaped mixer for mixing. The speed of the V-shaped mixer is 30r / min, and the mixing time is 8h to obtain doped molybdenum powder.

[0042] The third step is pressing and sintering

[0043] Put the doped molybdenum powder in the second step into a rubber sleeve, and press it with an isostatic press with a pressing pressure of 200 ...

Embodiment 3

[0047] A kind of preparation method of molybdenum alloy, specifically comprises the following steps different from embodiment 2: the first step ball milling

[0048] ZrH with a mass ratio of 25:1 2 Powder and Y 2 o 3 The powder was put into a ball mill jar for ball milling, the ball-to-material ratio was 2:1, the ball milling speed was 200r / min, and the ball milling time was 9h. Ball milling and sieving to obtain doped zirconium hydride powder.

[0049] Step 2 Mixing

[0050] Add 29.03Kg of pure molybdenum powder, 970g of doped zirconium hydride powder, 15g of silicon powder and 15g of boron powder obtained in the first step into a V-shaped mixer for mixing. The rotation speed of the V-type mixer is 25r / min, and the mixing time is 16h to obtain doped molybdenum powder.

[0051] The third step is pressing and sintering

[0052]Put the doped molybdenum powder in the second step into a rubber sleeve, and press it with an isostatic press with a pressing pressure of 180 MPa a...

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Abstract

The invention relates to a molybdenum alloy. The molybdenum alloy comprises the following components in percentage by weight: 0.5%-5.0% of Zr, 0.01%-0.2% of Y, 0.05%-0.3% of B, 0.05%-0.2% of Si, 0.19%-1.89% of O and 92.41%-99.20% of Mo. The invention further relates to a preparation method of the molybdenum alloy. The molybdenum alloy prepared through the method is high in recrystallization temperature, high-temperature strength, and oxidation resistance and corrosion resistance, and the service life of the molybdenum alloy is prolonged by 30% or above compared with a pure molybdenum electrodewhen the molybdenum alloy is used as a glass melting electrode; and moreover, doped alloy elements cannot pollute a glass melt and cannot color glass, so that the quality of the glass can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a molybdenum alloy and a preparation method thereof. Background technique [0002] Metal molybdenum has the advantages of high melting point, excellent high temperature creep resistance, good thermal conductivity, small thermal expansion coefficient and specific heat capacity, high high temperature strength, etc., and has good wettability and low contact resistance when in contact with glass melt. Ideal material for heating electrodes for glass melting. [0003] In recent years, with the continuous attention of the glass manufacturing industry to electric melting technology and the strengthening of environmental protection, the glass melting method has gradually changed from traditional flame heating to full electric melting heating; at the same time, the development of the glass industry and high-quality optical The large number of applications of glass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C1/04C22F1/18
CPCC22C27/04C22C1/045C22F1/18
Inventor 唐鑫鑫杨晓青李志翔柳兴光卫茹张清斌
Owner ZIGONG CEMENTED CARBIDE CORP
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