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Preparation method of supersaturation Al(Ti) metal solid solution powder

A technology of solid solution and powder, which is applied in the field of preparation of supersaturated Al metal solid solution powder, can solve problems such as difficulty in preparing supersaturated Al(Ti) solid solution powder, poor uniformity of ball milling products, and difficulty in the amount of grinding aids. Precise control, stable plasma glow and stable distribution

Inactive Publication Date: 2017-11-07
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the uniformity of the ball milling product is poor, and the grinding aid is difficult to complete the portion, resulting in greater pollution
Even so, it is difficult to prepare supersaturated Al(Ti) solid solution powders with a solid solubility of less than 5 mol% based on metal tanks and grinding balls

Method used

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  • Preparation method of supersaturation Al(Ti) metal solid solution powder
  • Preparation method of supersaturation Al(Ti) metal solid solution powder
  • Preparation method of supersaturation Al(Ti) metal solid solution powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of supersaturated Al (Ti) metal solid solution powder, the steps are as follows:

[0032] 1) First put Al powder and Ti powder into the ball mill tank according to the atomic ratio of 100:2. The particle size of Al powder and Ti powder are both less than 100 mesh, and the total mass of the two powders is 3g. Then put the ball into the ball and add 12ml of heptane;

[0033] 2) The electrode rod is installed on the cover plate of the ball mill tank, and the cover plate is covered. The electrode rod is located in the middle of the inside of the tank body, and the electrode rod and the outer surface of the ball mill tank are respectively connected to the two poles of the high-voltage AC power supply;

[0034] 3) Use a vacuum pump to evacuate the closed ball mill tank for 2 minutes, then fill it with argon, repeat the process 3 times, reduce the water and oxygen content in the ball mill tank, and fill the gas medium for the last time to make the air pres...

Embodiment 2

[0042] The difference from Example 1 is that the gas medium charged into the ball mill jar is hydrogen, and the gas medium is charged for the last time so that the air pressure in the ball mill jar is 1 atm, and the rest of the working principles are the same as in Example 1.

Embodiment 3

[0044] The difference from Example 1 is that the Al powder and the Ti powder are loaded into the ball mill according to the atomic ratio of Al:Ti=100:0.5, the total mass of the two powders is 10g, and 20ml of heptane is added to the ball mill , the rest of the working principle is the same as that of Embodiment 1.

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Abstract

The invention provides a preparation method of supersaturation Al(Ti) metal solid solution powder. Al powder and Ti powder are ground with an adherent wall ball milling method and a planetary ball milling method alternately, and at the same time the Al powder and the Ti powder are subjected to auxiliary ball milling with a plasma-assisted ball milling method of double-dielectric barrier discharge to prepare the supersaturation Al(Ti) metal solid solution powder. The fineness and uniformity of the Al(Ti) metal solution powder prepared with the preparation method are improved greatly, and at the same time the ball milling time of samples is shortened; and the working efficiency is improved, and the method can be also applied to preparation of Al metal solid solution powder of other transition elements.

Description

technical field [0001] The invention belongs to the technical field of solid solution powder preparation, and in particular relates to a preparation method of supersaturated Al(Ti) metal solid solution powder. Background technique [0002] The equilibrium solid solubility of Ti in Al is only 0.12% atomic ratio. To prepare a supersaturated Al(Ti) solid solution with a solid solubility higher than this concentration, non-equilibrium methods, such as quenching or high-energy ball milling, must be used. The quenching method requires a higher cooling rate, but the quenched product is not a small particle powder, and the ball milling method can directly produce a powdery supersaturated Al(Ti) solid solution. [0003] At present, the ball milling pots and balls usually used in high-energy ball milling are mainly made of metal, such as stainless steel pots or hard alloy pots, but because of the high viscosity of Al, Al tends to stick to the metal pot wall and balls during ball milli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04
CPCB22F9/04B22F2009/041B22F2009/043B22F2201/01B22F2201/10B22F2202/13
Inventor 黄存可郭进罗红整黄丹马树元
Owner GUANGXI UNIV
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