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Preparation method for Al2O3p / Mo alloy

An al2o3p, alloy technology, applied in the field of molybdenum-based alloys, can solve the problem that the preparation method is not suitable for large-scale mass production, etc., and achieves improved high-temperature recrystallization temperature, anti-wear and anti-arc ablation properties, high hardness, and good wear resistance. Effect

Active Publication Date: 2017-10-17
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of Al 2 o 3p / Mo alloy preparation method, thereby solving existing Al 2 o 3p The preparation method of / Mo alloy is not suitable for mass production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Al in this example 2 o 3p / Mo alloy, the volume percentage composition is Al 2 o 3 0.05%, the balance being Mo, prepared by the following method:

[0028] 1) Weigh 4000g of ammonium tetramolybdate and put it into a resistance furnace for calcination, calcine at 520°C for 4h, and pass through a 40-mesh sieve to obtain MoO 3 Powder;

[0029] 2) In an autoclave with a capacity of 250ml, add 8.5g of aluminum nitrate and 2.5g of urea respectively, add 10ml of glycerol as template agent and dispersant, then add distilled water, the filling degree is 80%, and heat the autoclave to 180 ℃, keep warm for 20h, and obtain AlOOH nanoparticle suspension with good dispersion after cooling;

[0030] 3) MoO 3 Put the powder into a ball mill tank, dry mill for 8 hours, then pour the AlOOH nanoparticle suspension prepared in step 2), add 1000ml of water and 500ml of absolute ethanol, wet mill for 8 hours, then dry at 140°C for 24 hours, pass 40 AlOOH / MoO prepared by mesh sieve 3 ...

Embodiment 2

[0035] Al in this example 2 o 3p / Mo alloy, the volume percentage composition is Al 2 o 3 0.4%, the balance being Mo, prepared by the following method:

[0036] 1) Weigh 4000g of ammonium tetramolybdate and put it into a resistance furnace for calcination, calcine at 510°C for 3 hours, pass through a 40-mesh sieve to obtain MoO 3 Powder;

[0037] 2) In an autoclave with a capacity of 250ml, add 68.0g of aluminum nitrate and 20.0g of urea respectively, add 20ml of glycerol as template agent and dispersant, then add distilled water, the filling degree is 80%, and heat the autoclave to 160 ℃, keep warm for 25h, and obtain AlOOH nanoparticle suspension with good dispersion after cooling;

[0038] 3) MoO 3 Put the powder into a ball mill jar, dry mill for 10 hours, then pour the AlOOH nanoparticle suspension prepared in step 2), add 1000ml of water and 500ml of absolute ethanol, wet mill for 10 hours, then dry at 160°C for 24 hours, and pass 40 AlOOH / MoO prepared by mesh si...

Embodiment 3

[0043] Al in this example 2 o 3p / Mo alloy, the volume percentage composition is Al 2 o 3 0.25%, and the balance is Mo, prepared by the following method:

[0044] 1) Weigh 4000g of ammonium dimolybdate and put it into a resistance furnace for calcination, calcine at 500°C for 5h, and pass through a 40-mesh sieve to obtain MoO 3 Powder;

[0045] 2) In an autoclave with a capacity of 250ml, add 14.77g of aluminum chloride and 5g of urea respectively, add 40ml of glycerol as template agent and dispersant, then add distilled water, the filling degree is 80%, and heat the autoclave to 170 ℃, keep warm for 22h, and obtain AlOOH nanoparticle suspension with good dispersion after cooling;

[0046] 3) MoO 3 Put the powder into a ball mill jar, dry mill for 9 hours, then pour the AlOOH nanoparticle suspension prepared in step 2), then add 1000ml of water and 500ml of absolute ethanol, wet mill for 9 hours, then dry at 180°C for 24 hours, and pass 40 AlOOH / MoO prepared by mesh si...

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PUM

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Abstract

The invention relates to a preparation method for Al2O3p / Mo alloy. The preparation method for the Al2O3p / Mo alloy comprises the steps that calcination is conducted on ammonium molybdate to prepare MoO3 powder, dry grinding is conducted, and the MoO3 powder is prepared to be used; soluble aluminum salt and urea are taken as raw materials, and A1OOH nano particle turbid liquid is prepared through a hydrothermal reaction; the A1OOH nano particle turbid liquid and the dry-grinded MoO3 powder are taken according to proportioning to conduct wet-grinding, drying is conducted, and composite powder is prepared; reduction is conducted on the composite powder at a hydrogen atmosphere, and composite molybdenum powder is obtained; and the composite molybdenum powder is subjected to pressing and sintering, and molybdenum alloy is prepared. According to the preparation method for the A12O3p / Mo alloy, the composite powder is prepared by adopting solid-liquid adulteration and combining ball-milling, the adulteration efficiency is high, the adulteration effect is good, the quality and the stability of the composite powder are good, and the composite powder is easy to collect, and suitable for mass production; and then the molybdenum alloy is prepared through hydrogen reduction, pressing and sintering, ceramic phase A12O3 nano particles are highly dispersed and distributed in a molybdenum matrix, and the wear resistance performance and the anti-electric-arc-erosion performance of the molybdenum alloy are improved.

Description

technical field [0001] The invention belongs to the field of molybdenum-based alloys, in particular to an Al 2 o 3p / Mo alloy preparation method. Background technique [0002] Because of its high melting point, low thermal expansion coefficient, good thermal and electrical conductivity, high temperature strength and good wear resistance, and molybdenum is easier to process than tungsten, molybdenum wire is widely used in high-temperature heating elements and high-temperature-resistant structural elements, such as a large number of high-power The wick, support wire, side rod and lead wire of high-illuminance special lamps; used as heating wire in resistance furnace, used as wire cutting wire in machining, etc. However, the properties of molybdenum itself have limitations, such as low temperature brittleness, high temperature or recrystallization brittleness, etc., which limit the processing and application of molybdenum wire. For example, under the high-speed wear of the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C27/04
CPCC22C1/056C22C27/04
Inventor 周玉成魏世忠姚丽莹司岸恒李秀青徐流杰张国赏徐锐
Owner HENAN UNIV OF SCI & TECH
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