A kind of mechanical alloying preparation method of nickel aluminum powder

A mechanical alloying, nickel-aluminum technology, applied in the field of material processing, can solve the problems of uneven particle size distribution of powder, small production output, expensive equipment, etc., to improve component uniformity, optimize alloying effect, suppress The effect of oxidation

Inactive Publication Date: 2018-09-28
QINGDAO R & D INST XIAN JIAOTONG UNIV +1
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  • Summary
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Problems solved by technology

[0003] At present, the main preparation methods of powder used in 3D printing are atomization method, chemical reduction method and mechanical alloying, etc. Among them, the process involved in atomization method is complicated, the equipment is expensive, and the components prepared by chemical reduction method are uniform, but the production capacity It is small and will produce chemical reagent wastewater at the same time. The main advantages of the mechanical alloying method are that the equipment is cheap and the processing method is simple. large-scale applications

Method used

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Embodiment Construction

[0019] The present invention will be further described below in combination with specific embodiments.

[0020] The mechanical alloying preparation method of nickel-aluminum powder includes the following steps, the selected alloy components include Al: 20-30%, Cr: 2-2.8%, Nb: 1.5-2.5%, Re: 0.2-0.8 %, the balance being Ni,

[0021] Select the element powder corresponding to the above components according to the above atomic percentage, the particle size of the powder is 100-200 microns, and then add it to the ethylene glycol solvent to obtain the mixture, the quality of the ethylene glycol solvent is 4% of the total mass of the element powder times, followed by ultrasonic vibration stirring, stirring for 10 minutes and then heating and concentrating the above-mentioned solvent under the condition of continuing stirring, concentrating ethylene glycol to 1.2 times the total mass of the element powder. Stir mechanically with a rotating shaft. The above process is to make all the...

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Abstract

The invention discloses a mechanical alloying preparation method of nickel aluminum powder. The preparation method includes the steps that a proper powder material is selected and added into ethylene glycol to be stirred, the mixture is added into a high-energy planetary ball mill after being concentrated, ball milling is performed by adopting grinding balls of different sizes, glucose serves as an antioxidant, and variable-angle balling milling is performed. By means of the mechanical alloying preparation method of the nickel aluminum powder, the oxidation phenomenon in the alloying process is inhibited, and component uniformity of the alloying process is improved.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a method for preparing nickel-aluminum powder by mechanical alloying. Background technique [0002] Intermetallic Ni 3 Al has abnormal yield strength-temperature effect, as well as high wear resistance and corrosion resistance. It has become an important structural material in the contemporary aerospace industry, civil industry and other fields, especially in the field of aeroengine blades. prospect. 3D printing, or additive manufacturing, is a rapid prototyping process that has emerged in recent years. It adopts layer-by-layer powder coating, laser or electron beam melting and molding to realize the finishing molding of precision parts and avoid the occurrence of defects in the casting process. Defects such as shrinkage cavity and porosity have become a new material processing method. [0003] At present, the main preparation methods of powder used in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04C22C19/05
CPCB22F9/04B22F2009/041C22C19/05
Inventor 候晓翠余钊辉徐甄真王茜
Owner QINGDAO R & D INST XIAN JIAOTONG UNIV
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