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Preparation method of low-oxygen molybdenum alloy and application thereof

A technology of molybdenum alloy and molybdenum powder, which is applied in the direction of metal processing equipment, manufacturing tools, X-ray tube parts, etc., can solve the problem of high oxygen content in molybdenum alloy, achieve high recrystallization temperature, strong toughness at room temperature, and high yield Effect

Inactive Publication Date: 2011-05-04
XIAN GEMEI METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The invention provides a method for preparing a low-oxygen molybdenum alloy and its application, which mainly solves the problem of high oxygen content in the molybdenum alloy prepared by powder metallurgy

Method used

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  • Preparation method of low-oxygen molybdenum alloy and application thereof
  • Preparation method of low-oxygen molybdenum alloy and application thereof
  • Preparation method of low-oxygen molybdenum alloy and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Comparative test a:

[0028] 1) Take the industrial molybdenum powder with the Fischer particle size of 5 μm, 7 μm, 9 μm, 11 μm, 13 μm, 15 μm, 18 μm, 24 μm, 30 μm, 40 μm, and 50 μm, and the hafnium hydride powder with the Fischer particle size of 3 μm to 10 μm, and the Fischer particle size 0.1 μm ~ 3 μm carbon black. The added mass of hafnium hydride powder is 1.20%, the added mass of carbon black powder is 0.15%, and the rest is molybdenum powder. Mix the selected molybdenum powder, hafnium hydride powder and carbon black powder evenly.

[0029] 2) Raw material forming

[0030] The raw materials uniformly mixed in the step 1) are subjected to static pressure molding under a pressure of 220 MPa to 300 MPa to obtain a blank, and the size of the blank is Φ120mm×130mm.

[0031] 3) Raw material sintering

[0032] Sinter the shaped billet in a hydrogen protective atmosphere. The sintering temperature is shown in the table below. The size of the billet after sintering is...

Embodiment 2

[0053] 1) Take industrial molybdenum powder with a Fisherby particle size of 4 μm, 5 μm, 7 μm, 9 μm, 11 μm, 13 μm, 15 μm, 20 μm, 30 μm, 40 μm, and 50 μm, titanium hydride powder with a Fisher’s particle size of 3 μm to 10 μm, and a Fisherley particle size of 3 μm ~10μm zirconium hydride powder, and carbon black with a Fischer particle size of 0.1μm~3μm. The added mass of titanium hydride powder is 0.50%, the added mass of zirconium hydride powder is 0.10%, the added mass of carbon black powder is 0.12%, and the rest is molybdenum powder. Mix the selected molybdenum powder, titanium hydride, zirconium hydride powder and carbon black powder evenly.

[0054] 2) Raw material forming

[0055] The raw materials uniformly mixed in step 1) are subjected to static pressure molding under a pressure of 200 MPa to obtain a billet, the size of which is Φ120mm×130mm.

[0056] 3) Raw material sintering

[0057] Sinter the shaped billet in a hydrogen protective atmosphere. The sintering te...

Embodiment 3

[0063] 1) Take industrial molybdenum powder with a Fischer particle size of 15 μm, select titanium hydride powder with a Fischer particle size of 3 μm to 10 μm and carbon black powder with a Fischer particle size of 0.1 μm to 3 μm according to the mass ratio of ingredients in the following table, and the rest is molybdenum powder. Mix the selected molybdenum powder, titanium hydride powder and carbon black powder evenly.

[0064] 2) Raw material forming

[0065] The raw materials uniformly mixed in step 1) are subjected to static pressure molding under a pressure of 200 MPa to obtain a billet, the size of which is Φ120mm×130mm.

[0066] 3) Raw material sintering

[0067] The molded blank was sintered in a hydrogen protective atmosphere, the highest sintering temperature was 2180°C, and the size of the blank after 7 sintering was Φ100mm×120mm.

[0068] 4) The sintered billet is forged, and the sample size after forging is Φ230mm×18mm.

[0069] The composition and properties ...

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Abstract

The invention provides a preparation method of a low-oxygen molybdenum alloy. The method comprises the following steps: 1) selecting raw materials: uniformly mixing industrial molybdenum powder with Fisher particle size of 3-100 mum, powder containing strengthening elements with Fisher particle size of 3-10 mum, and carbon simple substance powder with Fisher particle size of 0.1-3 mum at certain mass ratio; 2) forming the raw materials: performing static pressing or mould pressing treatment on the mixed raw materials under pressure of 100-300 MPa to obtain formed blank; and 3) sintering the raw materials: sintering the formed blank in vacuum, hydrogen or inert gas environment at the high temperature of between 1,800 and 2,300 DEG C for 5-15 h to obtain the low-oxygen molybdenum alloy. Through the invention, the problem of high oxygen content of the molybdenum alloy prepared by powder metallurgy is solved. The low-oxygen molybdenum alloy prepared by the method can be used for preparing an X-ray tube rotating anode target, a composite target-based target, a high-temperature crucible, a hot-forging die and a high-temperature ceramic gasket.

Description

technical field [0001] The present invention relates to a method for preparing a molybdenum alloy and its application, in particular to a method for preparing a low-oxygen molybdenum alloy containing one or more strengthening elements of titanium, zirconium, hafnium, tantalum and niobium and carbon elements. In its application, the molybdenum alloy prepared by the method can have an oxygen content below 20ppm, and the optimum can reach 1ppm. Background technique [0002] Molybdenum alloys containing one or more strengthening elements of titanium, zirconium, hafnium, tantalum, niobium and carbon elements have good high temperature performance, so they are widely used in medical equipment, aerospace, electronics industry and glass ceramics manufacturing industry, etc. Widely used in the industry. For example, alloys such as TZM, MHC, and MTC are typical of the above-mentioned types of alloys. [0003] Studies have shown that the plasticity-brittle transition temperature, rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C27/04H01J35/10B21J13/02
Inventor 陈兴友陈兴付张登临顾攀左振皋张骞王瑞晗
Owner XIAN GEMEI METAL MATERIAL
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