a zro 2 Ceramic particle reinforced molybdenum-based composite material and preparation method thereof

A technology of composite materials and ceramic particles, which is applied in the field of molybdenum-based composite materials, can solve the problems that the high-temperature performance of metal molybdenum and molybdenum alloys cannot meet the use requirements, and achieve easy automatic control, good comprehensive performance and high-temperature mechanical properties, and simple process Effect

Inactive Publication Date: 2016-08-17
HENAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the invention is to provide a kind of ZrO 2 Molybdenum-based composite materials reinforced with ceramic particles solve the problem that the high-temperature performance of existing metal molybdenum and molybdenum alloys cannot meet people's use requirements

Method used

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  • a zro <sub>2</sub> Ceramic particle reinforced molybdenum-based composite material and preparation method thereof

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Effect test

Embodiment 1

[0024] The ZrO of this embodiment 2 The ceramic particle reinforced molybdenum-based composite material is made of the following raw materials: 1.74g of zirconium nitrate pentahydrate, 91.04g of ammonium dimolybdate, and 136.56g of citric acid.

[0025] The ZrO of this embodiment 2 The preparation method of ceramic particle reinforced molybdenum-based composite material comprises the following steps:

[0026] 1) Take 91.04g of ammonium dimolybdate to prepare an aqueous solution with a mass concentration of 25%, take 136.56g of citric acid to prepare an aqueous solution with a mass concentration of 30%, and take 1.74g of zirconium nitrate pentahydrate to prepare a mass concentration of zirconium nitrate It is a 35% aqueous solution. Add zirconium nitrate aqueous solution to ammonium dimolybdate aqueous solution to produce a white precipitate, then add citric acid aqueous solution, and the white precipitate disappears to form a transparent mixed solution. Add nitric acid or amm...

Embodiment 2

[0031] The ZrO of this embodiment 2 The ceramic particle reinforced molybdenum-based composite material is made of the following raw materials: 8.72g of zirconium nitrate pentahydrate, 87.36g of ammonium dimolybdate, and 131.05g of citric acid.

[0032] The ZrO of this embodiment 2 The preparation method of ceramic particle reinforced molybdenum-based composite material comprises the following steps:

[0033] 1) Take 91.04g of ammonium dimolybdate to prepare an aqueous solution with a mass concentration of 30%, take 136.56g of citric acid to prepare an aqueous solution with a mass concentration of 35%, and take 8.72g of zirconium nitrate pentahydrate to prepare a mass concentration of zirconium nitrate It is a 25% aqueous solution. Add zirconium nitrate aqueous solution to ammonium dimolybdate aqueous solution to produce a white precipitate, then add citric acid aqueous solution, and the white precipitate disappears to form a transparent mixed solution. Add nitric acid or amm...

Embodiment 3

[0038] The ZrO of this embodiment 2 The ceramic particle reinforced molybdenum-based composite material is made of the following raw materials: 17.44g of zirconium nitrate pentahydrate, 82.76g of ammonium dimolybdate, and 124.15g of citric acid.

[0039] The ZrO of this embodiment 2 The preparation method of ceramic particle reinforced molybdenum-based composite material comprises the following steps:

[0040] 1) Take 82.76g of ammonium dimolybdate to prepare an aqueous solution with a mass concentration of 35%, take 124.15g of citric acid to prepare an aqueous solution with a mass concentration of 25%, and take 17.44g of zirconium nitrate pentahydrate to prepare a mass concentration of zirconium nitrate It is a 30% aqueous solution. Add nitric acid or ammonia water dropwise to the ammonium dimolybdate aqueous solution to adjust its pH to 1. Add the zirconium nitrate aqueous solution to the ammonium dimolybdate aqueous solution to produce a white precipitate, then add citric ...

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Abstract

The invention discloses ZrO2 ceramic particle reinforced molybdenum-based composite material and a preparation method thereof. The ZrO2 ceramic particle reinforced molybdenum-based composite material is mainly prepared from the following raw materials by weight: 1-14 parts of zirconium nitrate, 80-92 parts of ammonium dimolybdate and 120-138 parts of citric acid. The ZrO2 ceramic particle reinforced molybdenum-based composite material takes zirconium nitrate, ammonium dimolybdate and citric acid as raw materials; in the obtained molybdenum-based composite material, the particle size of the reinforcement phase ZrO2 ceramic particles is small, the particle size is on a nano or submircro level; the distribution of the ceramic particles is uniform; and the content of impurities is low. The ZrO2 ceramic particle reinforced molybdenum-based composite material has good high-temperature mechanical properties, processability and high usage temperature.

Description

technical field [0001] The invention belongs to the technical field of molybdenum-based composite materials, in particular to a ZrO 2 Ceramic particles reinforced molybdenum-based composites, also involving a ZrO 2 A method for preparing ceramic particle-reinforced molybdenum-based composite materials. Background technique [0002] Metal molybdenum and its alloys have the characteristics of high melting point, low high-temperature creep rate, small expansion coefficient, excellent thermal and electrical conductivity, thermal shock resistance, and strong wear and corrosion resistance. As high-performance materials, they are widely used in metallurgy, machinery, Petroleum, chemical industry, national defense, aviation, aerospace, electronics, nuclear industry and many other fields. However, the strength, toughness and hardness of metal molybdenum are poor at high temperature, the recrystallization temperature is low, and it is easy to be brittle after recrystallization. Thes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/04C22C32/00C22C1/05
Inventor 张国赏魏世忠崔超鹏郭松亮徐流杰李继文刘伟徐锐周玉成朱向炜
Owner HENAN UNIV OF SCI & TECH
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