Forming method of metal base carbon nanotube composite material part

Abstract

The invention discloses a forming method of a metal base carbon nanotube composite material part. The forming method comprises the following steps: (1) metal powder and a carbon nanotube are preheatedto obtain a metal base carbon nanotube composite material; (2) program files and SLM equipment are prepared; and (3) when the oxygen volume content of a forming chamber is not more than 0.1%, according to the program files and forming process parameters, selective melting is started for gradual stacking to form the needed part. The forming method uses a selective laser melting technology for layer-by-layer melting to improve dispersibility of the carbon nanotube in a metal matrix; due to high cooling speed, the interface reaction of the carbon nanotube and the metal matrix and the element segregation are reduced; through control of core process parameters, the stability of forming the metal base carbon nanotube composite material is improved; the compactness of the formed material can reach above 99.8%; a complicated part can be directly formed; the production period is shortened; the forming efficiency is improved; and higher production and application value is achieved.

Description

technical field [0001] The invention belongs to the technical field of laser selective melting technology rapid prototyping methods, and in particular relates to a forming method of metal-based carbon nanotube composite material parts. Background technique [0002] With the rapid development of high-tech fields such as aerospace, weaponry and automation, it is difficult for a single traditional material to meet the requirements of excellent comprehensive performance such as low specific gravity, high strength, high plasticity and toughness, and high thermal stability. Metal matrix composites have become a focus of attention and research due to their excellent comprehensive properties. The preparation technology of traditional silicon carbide, carbon fiber, and alumina reinforced metal matrix composites is relatively mature, but their shortcomings such as high brittleness and poor wear resistance limit the widespread use of such composites. A new composite material reinforce...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a forming method of metal-based carbon nanotube composite parts, which solves the problems of complex processing technology, low production efficiency and difficulty in forming complex parts in existing forming methods