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Rare earth carbonic acid cobalt and nickel composite powder and production method thereof

A technology of composite powder and rare earth carbonic acid, which is applied in the field of powder metallurgy, can solve the problems of poor dispersion of composite powder, low degree of alloying, and application limitations, and achieve the effects of low production cost, uniform distribution of rare earth, and low cost

Active Publication Date: 2011-07-13
GEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional manufacturing methods of cobalt-nickel composite powder include mechanical mixing method and atomization method, wherein: the CoNi alloy powder obtained by mechanical mixing method has a low degree of alloying, and the face-centered cubic structure of fully alloyed CoNi solid solution in the obtained composite powder The phase content is only 60-80%, and the non-alloyed hexagonal crystal structure phase content is as high as 20-40%, and the particle size is relatively coarse; and the CoNi alloy powder prepared by the atomization method, due to the high melting temperature required, leads to The particle size of the powder is also relatively coarse, generally exceeding 5 μm, and the cost is high, which limits its application
Moreover, the dispersion of rare earth additives in the composite powder obtained by traditional manufacturing methods is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: The weight ratio of cobalt nickel: yttrium = 100:0.3.

[0029] When sodium carbonate or ammonium carbonate and yttrium chloride are used as raw materials, the prepared solution is composed of: the concentration of cobalt chloride solution: 1.0M, the concentration of nickel chloride solution: 1.0M, and the concentration of yttrium chloride solution: 0.004M , The solution concentration of sodium carbonate or ammonium carbonate is: 2.006M.

[0030] Heat the above-prepared solutions separately to dissolve the solids completely, adjust the pH of the solution to 8.0-9.0, stir evenly and heat to 50-90°C, keep the temperature constant and stir continuously. After the chemical co-deposition reaction is completed, the precipitated powder and the solution Separate and filter, wash with clean water, and dry in a vacuum oven at 70 to 90°C for 1 to 1.5 hours to make a rare earth cobalt-nickel carbonate composite powder (cobalt-nickel: yttrium weight ratio = 100:0.3), an...

Embodiment 2

[0032] Embodiment 2: The weight ratio of cobalt-nickel:yttrium=100:5.

[0033] When using sodium bicarbonate (ammonium bicarbonate) and yttrium chloride as raw materials, the preparation solution consists of: the solution concentration of cobalt chloride is: 1.5M, the solution concentration of nickel chloride is: 1.5M, and the solution concentration of yttrium chloride is: : 0.088M, the solution concentration of sodium bicarbonate (ammonium bicarbonate) is: 2.264M;

[0034] Heat the prepared A, B, C, and D solutions above to completely dissolve the solids, adjust the pH value of the solution to 8.0-9.0, stir evenly and heat to 50-90°C, keep the temperature constant and stir continuously, until the chemical co-deposition reaction is completed Afterwards, the precipitated powder is separated and filtered from the solution, washed with clean water, and dried in a vacuum oven at 70 to 90° C. for 1 to 1.5 hours to make a rare earth cobalt-nickel carbonate composite powder (cobalt n...

Embodiment 3

[0036] Embodiment 3: The weight ratio of cobalt-nickel:cerium or lanthanum=100:0.3.

[0037] When using sodium carbonate or ammonium carbonate and cerium chloride (lanthanum) as raw materials, the preparation solution consists of: the solution concentration of cobalt chloride is: 1.0M, the solution concentration of nickel chloride is: 1.0M, cerium chloride (lanthanum) The solution concentration is: 0.0026M, the solution concentration of sodium carbonate or ammonium carbonate is: 2.004M.

[0038] Heat the above-prepared solutions separately to dissolve the solids completely, adjust the pH of the solution to 8.0-9.0, stir evenly and heat to 50-90°C, keep the temperature constant and stir continuously. After the chemical co-deposition reaction is completed, the precipitated powder and the solution Separation and filtration, washing with clean water, drying in a vacuum oven at 70 to 90°C for 1 to 1.5 hours, making rare earth cobalt nickel carbonate / cerium (lanthanum) composite pow...

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Abstract

The invention relates to a rare earth carbonic acid cobalt and nickel composite powder and a production method thereof. The composite powder comprises rare earth elements and main components of carbonate and / or bicarbonate, cobalt and nickel, wherein the total mol content of cobalt and nickel is 30-60 % (mol), the mol content of carbonate and / or bicarbonate is 40-70% (mol), the mol ratio of cobalt and nickel is 0.9-1.1, and the weight parts of rare earth elements is 0.3-5%(wt) of the total weight of the cobalt and nickel. According to the invention, rare earth carbonic acid cobalt and nickel composite powder with finer granularity, higher alloying degree and better dispersivity of rare earth additive components at lower cost can be produced.

Description

technical field [0001] The invention relates to the field of powder metallurgy, more specifically, the invention relates to a cobalt-nickel alloy powder and a manufacturing method thereof. Background technique [0002] In the field of diamond tools and hard alloy materials, CoNi alloy powder is widely used due to its excellent bonding performance and strength performance, and the addition of rare earth components can further improve the processing performance and mechanical properties of CoNi alloy powder. [0003] The traditional manufacturing methods of cobalt-nickel composite powder include mechanical mixing method and atomization method, wherein: the CoNi alloy powder obtained by mechanical mixing method has a low degree of alloying, and the face-centered cubic structure of fully alloyed CoNi solid solution in the obtained composite powder The phase content is only 60-80%, and the non-alloyed hexagonal crystal structure phase content is as high as 20-40%, and the particl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24
Inventor 刘沙许开华
Owner GEM CO LTD
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