Laser-induced metal surface composite TiCN strengthening method with tio2, isopropylamine, carbon black, methane and nitrogen as components

Abstract

The invention discloses a method for strengthening a laser induced metal surface layer composite TiCN by using TiO2, isopropylamine, carbon black, methanol and nitrogen as components, and relates to the technical field of strengthening treatment on metal surfaces. A mixture of the TiO2, the isopropylamine and carbon black is applied to the metal surface, and the metal surface applied with the mixture is scanned by a laser beam in a co-existence of the methanol and the nitrogen. By adopting the method, TiCN is generated by in-situ compounding of the metal surface layer, so that the strengthening to the metal surface and the abrasion resistance are realized.

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.