Preparation method of laser cladding forming composite material enhanced by nano materials

Abstract

The invention discloses a preparation method of a laser cladding forming composite material enhanced by nano materials. The composite material is prepared by following steps: one or a plurality of the nano materials are distributed in one or a plurality of matrix materials, and the mixture is subjected to laser cladding forming so as to obtain the composite material. The kinds and distribution conditions of the nano materials can be changed according to need. The nano materials can be nanoparticle, nanotbe, nanowire, nanofiber and a combination of the above forms. The matrix materials are selected from materials suitable for laser cladding forming technology, such as metal, ceramic, polymer and a combination of the materials above. The preparation method comprises a plurality of operation and steps, and is used for preparing the laser cladding forming composite material enhanced by the nano materials. According to the preparation method, the nano materials are used for enhancing laser cladding forming materials, so that properties of the laser cladding forming materials are improved; in addition, the laser cladding forming technology possesses high speed and efficiency, so that preparation time of the composite material is shortened greatly, production efficiency of the composite material is increased, and high speed production of the composite material is realized.

Description

technical field [0001] The invention relates to a manufacturing method of laser cladding forming composite materials reinforced by nanometer materials, which is suitable for rapid manufacturing in industrial fields such as aerospace, ships and vehicles. Background technique [0002] Nanomaterials are materials whose characteristic scale is on the order of nanometers in at least one direction. Because of their extremely small size, nanomaterials have different surface electronic structures and crystal structures, and have quantum effects, small size effects, surface effects, and interface effects that macroscopic objects do not have, and therefore have excellent mechanical, Electromagnetic and chemical properties. In the field of composite materials, nanomaterials are ideal reinforcement and toughening phases. For example, nanotubes, nanowires and nanofibers can bridge at the crack tip to form a crack arrest mechanism and improve the ability of materials to resist fracture a...

AI Technical Summary

Problems solved by technology

On the one hand, although nanomaterials are widely used in the field of composite materials, traditional manufacturing methods are difficult to control the types and proportions of nanomaterials in composite materials, resulting in inefficient utilization of nanomaterials

On the other hand, laser cladding forming adopts the manufacturing method of layer-by-layer accumulation, the inside of the forming material is not compact enough, and it is prone to various defects such as cracks, and the mechanical properties are not high, especially the fatigue and fracture properties are poor.

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