A kind of mechanical alloying preparation method of nickel aluminum powder

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 ...