High-temperature ni-based alloy powder preparation method

A nickel-based alloy and high-temperature technology, which is applied in the field of preparation of high-temperature nickel-based alloy powder, can solve problems such as unsolved problems, and achieve the effects of controllable particle size, high purity, and friendly production environment

Inactive Publication Date: 2016-11-30

JINCHUAN GROUP LIMITED

6 Cites 3 Cited by

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Problems solved by technology

However, there are no public reports on the nickel-aluminum and nickel-chromium powders used as anode catalyst materials for MCFC...

Abstract

The invention relates to a high-temperature ni-based alloy powder preparation method. The method is characterized in that the mother alloy is prepared by smelting electrolytic nickel, electrolytic aluminum or chromium as raw materials according to a certain proportion, and is smelted again by adding burning loss elements according to the requirements of the alloy powder components, and the high-temperature alloy powder is prepared by deoxidization, alloying, ultra-high pressure atomization, filtration and vacuum drying. The high-temperature ni-based alloy powder prepared by the method has the advantages of high product purity, short flow, small granularity, controllability, and low energy consumption.

Technology Topic

DeoxidizationChromium +5

Examples

Experimental program(2)

Example Embodiment

[0015] Example 1

[0016] A method for preparing high-temperature nickel-based alloy powder, the specific steps are as follows:

[0017] (1) Preparation of master alloy: use 80% electrolytic nickel and 20% electrolytic aluminum as raw materials, and smelt at 1600℃;

[0018] (2) Melting: Use a 100 kg intermediate frequency induction furnace. After electrolytic nickel is melted, a covering agent is added. The covering agent is 30% fluorite and 70% lime by weight. The amount of covering agent added is 2% of the mass of the master alloy. When the metal is completely melted After pouring into ingots for use;

[0019] (3) Deoxidation: After the electrolytic nickel is melted, the covering agent is added, and the aluminum lime is diffused and deoxidized. The amount of aluminum lime added is 0.5% of the mass of the master alloy. After the "slag white", the master alloy is added;

[0020] (4) Alloying: The degree of alloying mainly depends on the electromagnetic stirring of the intermediate frequency furnace itself. The induction coil power of the frequency furnace is 200Kw, and the alloying time is set to 40min;

[0021] (5) Atomization: Atomization produces powder, the atomization water pressure is 70MPa, argon protection is used, and the atomization temperature is 1800℃;

[0022] (6) Vacuum drying: the powder produced in step (5) is filtered and dried in vacuum for 4 hours, and the vacuum degree of the drying is 0.8 MPa, and the high temperature nickel-based alloy powder product of the present invention is obtained. The obtained high-temperature nickel-based alloy powder: Ni96Al4 purity ≥99.5%; particle size: D50=8.9μm.

Example Embodiment

[0023] Example 2

[0024] A method for preparing high-temperature nickel-based alloy powder, the specific steps are as follows:

[0025] (1) Preparation of master alloy: use 60% electrolytic nickel and 40% electrolytic chromium as raw materials, and smelt at 1700℃;

[0026] (2) Melting: Use a 100 kg intermediate frequency induction furnace. After electrolytic nickel is melted, a covering agent is added. The covering agent is 10% fluorite and 90% lime by weight. The amount of covering agent added is 6% of the mass of the master alloy. When the metal is completely melted After pouring into ingots for use;

[0027] (3) Deoxidation: After the electrolytic nickel is melted, the covering agent is added, and the aluminum lime is diffused and deoxidized. The amount of aluminum lime added is 2% of the mass of the master alloy. After the "slag white", the master alloy is added;

[0028] (4) Alloying: The degree of alloying mainly depends on the electromagnetic stirring of the intermediate frequency furnace itself. The induction coil power of the frequency furnace is 100Kw, and the alloying time is set to 20min;

[0029] (5) Atomization: Atomization produces powder, the atomization water pressure is 110MPa, argon protection is used, and the atomization temperature is 1500℃;

[0030] (6) Vacuum drying: the powder produced in step (5) is filtered and dried in vacuum for 2 hours, and the vacuum degree of the drying is 0.4 MPa, and the high temperature nickel-based alloy powder product of the present invention is obtained. The obtained high-temperature nickel-based alloy powder: Ni97Cr3, purity ≥99.5%; particle size: D50=6.5μm.

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Classification and recommendation of technical efficacy words

short process
Reduce energy consumption

Method for recovering cobalt and lithium from waste lithium ion batteries

InactiveCN101818251Ashort processeasy to operate

Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

Method for preparing and recovering ternary anode material from waste nickel-cobalt-manganese ternary lithium ion batteries

ActiveCN106848470Aavoid separationshort process

Owner:CENT SOUTH UNIV

High-temperature ni-based alloy powder preparation method

A nickel-based alloy and high-temperature technology, which is applied in the field of preparation of high-temperature nickel-based alloy powder, can solve problems such as unsolved problems, and achieve the effects of controllable particle size, high purity, and friendly production environment

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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