Method for preparing amorphous nano-sheets

A nanosheet and amorphous technology, which is applied in the field of preparation of amorphous nanosheets, can solve the problems of expensive, difficult to obtain amorphous alloy powder, complex equipment, etc., and achieve the effect of low cost, precise composition, and simple equipment

Inactive Publication Date: 2009-11-04
HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The atomization method is widely used to produce amorphous alloy powder in large quantities, but its equipment is complicated and expensive, and it has high requirements on the fluidity of the alloy, so it is difficult to obtain nano-scale amorphous alloy powder; although the chemical deposition method can obtain nano-scale Grade amorphous alloy powder, but it is difficult to obtain ternary and above amorphous alloy powder, and the waste liquid produced by this method pollutes the environment; mechanical alloying is to prepare amorphous alloy powder by ball milling a mixture of metal element powders The method has simple equipment and low cost, but it is difficult to obtain amorphous alloy powder for insoluble metals, and it needs argon protection. However, it needs to be vacuumed, but in the process of vacuuming, it is inevitable that part of the alloy powder is drawn out and it is difficult to Precisely control the composition of amorphous alloy powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Weigh copper 5.4246±0.0001g, zirconium 3.8939±0.0001g and titanium 0.6815±0.0001g with an analytical balance, put them into a copper crucible in a vacuum electric arc furnace, and evacuate to 4*10 -4 Pa, filled with argon to make the pressure of the vacuum chamber up to 0.5 atmospheres, after smelting Ti for suction, then smelting the alloy 3 times, taking out and breaking into powder with an average diameter of 30 microns, and then putting the powder into the powder with a ball-to-material ratio of 15 : 1 in the ball mill jar, add alcohol to completely cover the ball and material, put it on the ball mill and take it out after ball milling for 184h under the ball milling speed of 300r / min, and obtain the Cu with an average thickness of 350nm and a degree of amorphization of 99.8%. 60 Zr 30 Ti 10 Amorphous powder.

Embodiment 2

[0012] Weigh 4.8765±0.0001g of copper, 4.4551±0.0001g of zirconium and 0.6684±0.0001g of titanium with an analytical balance, put them into the copper crucible of the vacuum electric arc furnace, and evacuate to 5*10 -4 Pa, filled with argon gas to make the pressure of the vacuum chamber reach 0.45 atmospheres, after smelting Ti for suction, then smelting the alloy 4 times, taking out and breaking into powder with an average diameter of 40 microns, and then putting the powder into the powder with a ball-to-material ratio of 20 : 1 in the ball mill tank, add alcohol to completely cover the ball and the material, put it on the ball mill, and take it out after ball milling for 80h under the ball milling speed of 400r / min, to obtain a sheet with an average thickness of 250nm and a degree of amorphization of 99.6% Cu 55 Zr 35 Ti 10 Amorphous powder.

Embodiment 3

[0014] Weigh copper 5.9947±0.0001g, zirconium 3.3101±0.0001g and titanium 0.6952±0.0001g with an analytical balance, put them into a copper crucible in a vacuum electric arc furnace, and evacuate to 6*10 -4 Pa, filled with argon gas to make the pressure of the vacuum chamber reach 0.55 atmospheres, after smelting Ti for suction, then smelting the alloy 5 times, taking out and breaking into powder with an average diameter of 50 microns, and then putting the powder into the powder with a ball-to-material ratio of 18 : 1 in the ball mill jar, add alcohol to completely cover the ball and the material, put it on the ball mill, take it out after ball milling for 60h under the ball milling speed of 500r / min, and obtain the flaky Cu with an average thickness of 280nm and a degree of amorphization of 99.4%. 65 Zr 25 Ti 10 Amorphous powder.

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Abstract

The invention discloses a method for preparing amorphous nano-sheets. The method is characterized by comprising the following steps: (1) proportioning block-shaped Cu, Zr and Ti with the purity over 99.9 percent by weight according to the atomicity percentage of Cu being 55 to 65, Zr being 35 to 25 and Ti being 10; (2) putting the proportioned materials into a crucible of an electric arc furnace for melting; (3) melting alloy 3 to 5 times to smash master alloy into power with the diameter between 30 and 50 microns; (4) putting the powder into a stainless steel ball-milling pot and pouring alcohol or acetone into the pot to completely cover the powder and milling balls; and (5) performing ball-milling for 60 to 184 hours at a ball-milling speed between 300 and 500 r/min to obtain nano-scale flaky amorphous alloy powder. The method for preparing the amorphous nano-sheets has the advantages of no pollution, precise components, no need for vacuum pumping in a ball-milling process, simple equipment and low cost.

Description

technical field [0001] The invention relates to a preparation method of an amorphous nanosheet. Background technique [0002] The methods for preparing amorphous alloy powder mainly include atomization method, mechanical alloying method and chemical deposition method. The atomization method is widely used to produce amorphous alloy powder in large quantities, but its equipment is complicated and expensive, and it has high requirements on the fluidity of the alloy, so it is difficult to obtain nano-scale amorphous alloy powder; although the chemical deposition method can obtain nano-scale Grade amorphous alloy powder, but it is difficult to obtain ternary and above amorphous alloy powder, and the waste liquid produced by this method pollutes the environment; mechanical alloying is to prepare amorphous alloy powder by ball milling a mixture of metal element powders The method has simple equipment and low cost, but it is difficult to obtain amorphous alloy powder for insoluble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00
Inventor 蔡安辉熊翔安伟科罗云李小松
Owner HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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