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A kind of molybdenum rhenium cerium alloy and preparation method thereof

A technology of cerium alloy and molybdenum-rhenium, which is applied in the field of molybdenum-rhenium-cerium alloy and its preparation, can solve the problems of high cost, ineffective strengthening effect of rhenium, and high price of rhenium metal, and achieve easy mixing and uniformity, improved plasticity, and increased strength Effect

Active Publication Date: 2020-08-11
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some studies have added rhenium to molybdenum to improve the strength and plasticity of molybdenum, but due to the high price of rhenium metal, the cost of using rhenium metal to improve the strength and plasticity of molybdenum metal is high, and the strengthening effect of low rhenium content is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The molybdenum-rhenium-cerium alloy of this embodiment is composed of rhenium, cerium oxide, molybdenum and unavoidable impurities; the mass of rhenium is 5% of the mass of the molybdenum-rhenium-cerium alloy, and the mass of cerium in the cerium oxide is molybdenum-rhenium-cerium 0.6% of alloy mass.

[0028] The method for preparing molybdenum-rhenium-cerium alloy in this embodiment may further comprise the steps:

[0029] Step 1. Divide 737g of cerium oxide powder and 5000g of rhenium powder into 10 equal parts respectively, then put a part of 73.7g of cerium oxide powder and a part of 500g of rhenium powder into a three-dimensional mixer and mix evenly to obtain a single part of mixed powder Take out, repeat the process of mixing and taking out a part of 73.7g cerium oxide powder and a part of 500g rhenium powder until the cerium oxide powder and rhenium powder are mixed, then put all single parts of mixed powder into a three-dimensional mixer and mix evenly to obtai...

Embodiment 2

[0038]The molybdenum-rhenium-cerium alloy of this embodiment is composed of rhenium, cerium oxide, molybdenum and inevitable impurities; the mass of rhenium is 8% of the mass of the molybdenum-rhenium-cerium alloy, and the mass of cerium in the cerium oxide is molybdenum-rhenium-cerium 0.9% of alloy mass.

[0039] The method for preparing molybdenum-rhenium-cerium alloy in this embodiment may further comprise the steps:

[0040] Step 1. Divide 1106g of cerium oxide powder and 8000g of rhenium powder into 10 equal parts respectively, then put one part of 110.6g of cerium oxide powder and one part of 800g of rhenium powder into a three-dimensional mixer and mix evenly to obtain a single part of mixed powder Take out, repeat the mixing and taking-out process of one part of 110.6g cerium oxide powder and one part of 800g rhenium powder until the cerium oxide powder and rhenium powder are mixed, then put all single parts of mixed powder into a three-dimensional mixer and mix evenly...

Embodiment 3

[0049] The molybdenum-rhenium-cerium alloy of this embodiment is composed of rhenium, cerium oxide, molybdenum and unavoidable impurities; the mass of the rhenium is 10% of the mass of the molybdenum-rhenium-cerium alloy, and the mass of cerium in the cerium oxide is molybdenum-rhenium-cerium 0.3% of alloy mass.

[0050] The method for preparing molybdenum-rhenium-cerium alloy in this embodiment may further comprise the steps:

[0051] Step 1. Divide 368.6g of cerium oxide powder and 10000g of rhenium powder into 10 equal parts respectively, then put one part of 36.86g of cerium oxide powder and one part of 1000g of rhenium powder into a three-dimensional mixer and mix evenly to obtain a single part of mixed powder Finally, take it out, repeat the mixing and taking out process of one part of 6.86g cerium oxide powder and one part of 1000g rhenium powder until the cerium oxide powder and rhenium powder are mixed, and then put all the single parts of mixed powder into the three-...

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Abstract

The present invention discloses a molybdenum rhenium cerium alloy composed of rhenium, cerium oxide, molybdenum and unavoidable impurities. A preparation method of the molybdenum rhenium cerium alloyis further disclosed. The preparation method includes adopting a near-specific gravity mixing method to mix molybdenum trioxide powder, cerium oxide powder and rhenium powder, conducting air milling,converting molybdenum trioxide into molybdenum by conducting reduction twice, and then conducting isostatic pressing and high temperature sintering to obtain the molybdenum rhenium cerium alloy. The rhenium in the molybdenum rhenium cerium alloy forms a strengthening phase in a molybdenum matrix, and improves the strength of the alloy. The cerium oxide is dispersed in the alloy, softens the grainboundary of the alloy, and strengthens the toughness and the plasticity of the molybdenum rhenium cerium alloy. According to the preparation method, the molybdenum trioxide powder is used as the molybdenum raw material, the uniformity of all elements in the molybdenum rhenium cerium alloy powder is improved, the elements in the molybdenum rhenium cerium alloy are not prone to segregation, and theperformance of the molybdenum rhenium cerium alloy is improved.

Description

technical field [0001] The invention belongs to the technical field of alloy preparation, and in particular relates to a molybdenum-rhenium-cerium alloy and a preparation method thereof. Background technique [0002] Adding carbon, titanium hydride, zirconium hydride or lanthanum to the molybdenum matrix to prepare molybdenum-based alloys can effectively improve the strength of molybdenum, but the plasticity is limited. Some studies have improved the strength and plasticity of molybdenum by adding rhenium to molybdenum. However, due to the high price of rhenium metal, the cost of using rhenium metal to improve the strength and plasticity of molybdenum metal is high, and the strengthening effect of low rhenium content is not obvious. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a molybdenum-rhenium-cerium alloy for the above-mentioned deficiencies in the prior art. The molybdenum-rhenium-cerium alloy introduce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/04C22C1/05
CPCC22C1/05C22C27/04
Inventor 刘仁智杨秦莉庄飞王娜崔玉青
Owner JINDUICHENG MOLYBDENUM CO LTD
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