A method for preparing a wear-resistant layer on a magnesium-based surface of a graphene oxide alloy by laser cladding

Abstract

The invention discloses a method for preparing a graphene oxide alloy magnesium-based surface abrasion-resistant layer by laser cladding. The method includes the steps: adsorbing Ti ions under the action of functional groups of graphene oxide by the aid of high hydrothermal pressure in an environment without water, and acquiring anatase GO@TiO2 (anatase) in final-period baking; adjusting and mixing the acquired powder, fine Fe powder, Al2O3 particles, Si powder and glycerol according to a certain proportion to obtain adhesive mixed powder; grinding a substrate magnesium alloy plate by the aidof abrasive paper, and uniformly coating the surface of a substrate with the adhesive mixed powder; rapidly and uniformly pre-sintering the powder on the surface of the substrate by the aid of a flamegun; treating a material by laser cladding. A surface cladding material of a magnesium alloy treated by the method is low in abrasion loss and has the advantages of high surface hardness and the like, the materials has various enhanced phases such as Al2O3, SiC and GO, and the method has the advantages of simplicity, safety, low cost, easiness in operation, controllability and the like.

Description

technical field [0001] The invention belongs to the technical field of material preparation. Background technique [0002] Graphene nanosheets are made of sp 2 A one-atom-thick two-dimensional material composed of hybridized carbon atoms exhibits a series of unusual physical properties. Because of its special two-dimensional structure, graphene nanosheets have attracted great interest from researchers in physics, chemistry and materials science. Basic research and engineering application research on graphene have become a research hotspot in recent years. Due to the high strength of graphene, its tensile strength can reach 130GPa, implying that graphene has a huge application space in material application research. [0003] Due to the extremely outstanding physical properties of graphene such as strength, current research focuses on the enhancement of its mechanical properties, while ignoring its excellent properties in terms of material wear and hardness. A large number ...

AI Technical Summary

Problems solved by technology

In fact, due to the limitations of electroless plating, this method is more harmful to the human body, and it also needs to carboxylate graphene separately, which has a long production cycle. At the same time, it uses the powder spraying sintering method, which has a high degree of waste for this type of powder and has certain limitations

[0008] Therefore, there is still a lack of a cost-effective preparation technology for the preparation of a graphene oxide wear-resistant layer on the surface of magnesium-based materials.