Laser induced metal surface layer composite TiCN reinforcing method with TiO2, formamide, carbon black, acetylene and nitrogen gas as components

Abstract

The invention discloses a laser induced metal surface layer composite TiCN reinforcing method with TiO2, formamide, carbon black, acetylene and nitrogen gas as components, and relates to the technical field of metal surface reinforcement processing. The method comprises the following steps: applying TiO2, formamide and carbon black mixture on a metal surface, and under acetylene and nitrogen gas existing condition, scanning with laser beams on the metal surface to which the mixture is applied. By adopting the above method, TiCN can be generated on the metal surface layer in an in-situ composite manner, thus enhancing the metal surface and improving the wear resistance.

Description

technical field [0001] The invention relates to the technical field of metal surface strengthening treatment. Background technique [0002] Titanium carbide nitride (TiCN) is a non-oxide material with excellent performance and wide application. It is also a coating material with excellent performance. It is an infinite solid solution of titanium carbide and titanium nitride, and has both titanium carbide and titanium nitride. It has the advantages of high hardness, wear resistance, corrosion resistance, oxidation resistance, etc., and has good thermal conductivity, electrical conductivity and chemical stability. It is widely used in cutting tools, powder metallurgy and cermet products. It is the current research and One of the most widely used thin film materials. [0003] The preparation techniques of TiCN coating are mainly chemical vapor deposition (CVD) and physical vapor deposition (PVD). The deposition temperature of the CVD method is high, exceeding the heat treatme...

AI Technical Summary

Problems solved by technology

The deposition temperature of the CVD method is high, exceeding the heat treatment temperature of most steel materials, and CVD uses chlorides as raw materials, and requires a set of equipment for preparing Ti-containing halide gases. The process is complicated and the cost is high, which is different from the current green industry. contradict

The PVD method has a lower formation temperature, thinner coating, low bonding strength with the substrate, easy peeling of the coating from the substrate, and poor wrapping properties

[0004] Regardless of the CVD or PVD method, the TiCN coating obtained is relatively thin, with a thickness of only a few microns (μm), and the coating is mechanically bonded to the substrate, the strength of the bonding surface is low, and the coating is prone to peeling off during use.