Preparing method for alloy powder

A technology of alloy powder and alloy, which is applied in the field of preparation of alloy powder, to achieve the effect of easy operation, strong feasibility and application prospect, and simple process

Inactive Publication Date: 2018-04-03
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the actual problem is how to obtain cheap non-spherical metal powder

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0033] The invention provides a preparation method of alloy powder, comprising the following steps:

[0034] (1) Under an inert atmosphere, the alkali metal salt or alkaline earth metal salt is heated to a molten state, and electrolysis is performed, and the following electrochemical reaction occurs on the cathode:

[0035] Me n+ + ne = Me (1)

[0036] Me n+ Alkali metal or alkaline earth metal ions, because the alkali metal or alkaline earth metal will dissolve in the electrolyte around the cathode to form an electrolyte containing metal mist. At this time, add an alloy-containing compound or an alloy-containing anode to the electrolyte around the cathode to decompose the alloy ions, the following reaction occurs:

[0037] Me+Me 1 n+ → Me n+ +Me 1 (2)

[0038] is reduced to the metal Me 1 The titanium alloy powder and the alloy element powder are alloyed in the electrolyte to obtain the corresponding titanium alloy powder. The alloy-containing compound is at least ...

Embodiment 1

[0041] Embodiment 1 adopts the method of the present invention to prepare titanium-aluminum alloy powder

[0042] Under the protection of argon atmosphere, the analytically pure NaCl-KCl electrolyte was heated to 850°C, a graphite anode and a steel cathode were inserted, and electrolysis was carried out by energizing. After 10 minutes of electrolysis, the molten salt in the cathode area was continuously fed with AlCl by using a quartz tube. 3 and TiCl 4 , the two are mixed in advance according to the molar ratio of 1:1, AlCl 3 and TiCl 4 The total amount of Na added is slightly less than the total amount of Na required for the stoichiometric ratio. After the electrolysis is completed, keep the temperature for 30 minutes. The electrolyte is cooled to below 100°C with the furnace. Titanium and aluminum ions that have not been reduced to simple substances, and then washed with water to AgNO 3 No chlorine ion was detected in the solution, it was filtered and air-dried at room t...

Embodiment 2

[0043] Example 2 Preparation of titanium-aluminum alloy powder by the method of the present invention

[0044]Under the protection of argon atmosphere, the analytically pure NaCl-KCl mixed salt is heated up to 700°C, a metal aluminum anode, a metal titanium anode and a steel cathode are inserted, and the electrolysis is carried out by energizing, and a current is energized on the two anodes They are 3A and 2A respectively. After 60 minutes of electrolysis, the electrolyte is cooled to below 100°C with the furnace, the electrolyte is chiseled out and broken, and the salt and unreduced titanium and aluminum ions are washed away with 0.2% hydrochloric acid, and then water Wash to AgNO 3 No chlorine ion was detected in the solution, it was filtered and air-dried at room temperature, and the O content was analyzed to be 1400PPm. The obtained titanium-aluminum alloy powder D of the present embodiment 50 It is 1.59um, Ti is 63.02% in chemical analysis alloy composition, and Al is 3...

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Abstract

The invention relates to a preparing method for alloy powder and belongs to the technical field of metal refining. According to the technical purpose to be achieved, the preparing method for the alloypowder is provided and includes the following steps that alkali metal or alkali-earth metal is dissolved into fused salt of the alkali metal or alkali-earth metal, then metal ions of the alloy powderare added, the metal ions are reduced, and the alloy powder is prepared. The preparing method has the beneficial effects that the technology is simple, operation is easy, and the cost is low; and inaddition, the grain size of prepared metal powder ranges from 0.5 microns to 50 microns, the content of O in the powder is as low as 0.05% to 0.1%, and very high feasibility and application prospectsare achieved.

Description

technical field [0001] The invention relates to a method for preparing alloy powder, and belongs to the technical field of metal extraction. Background technique [0002] With the rise of 3D printing technology, refractory metals with high melting point have gradually become an important means of forming and processing. For 3D printing parts with high precision, the raw material is required to be spherical metal powder with a certain particle size. The main methods for preparing spherical metal powder are rotating electrode method, atomization method and plasma spheroidization method. At present, rotating electrode method and atomization method are two main methods for preparing spherical metal powder. [0003] Due to the limitation of the rotation speed of the electrode, the spherical metal powder prepared by the rotating electrode method has a relatively coarse particle size, and the powder particles below 45um account for about 5% of the total mass. The low yield leads ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C5/04B33Y70/00
CPCC25C5/04B33Y70/00
Inventor 穆天柱邓斌谢波
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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