The Microstructure and Wear Resistance of a Copper Matrix Composite Layer on Copper via Nitrogen-Shielded Arc Cladding

Abstract

A TiN and TiN·Ti 2 Cu reinforced copper matrix composite layer was cladded onto a T3 copper substrate to improve the anti-wear performance of copper products by means of the nitrogen-shielded gas tungsten arc cladding method (N 2 -GTAC). Better than the traditional preparation method of TiN, the TiN particles in the cladding layer were in situ generated using N atoms of shielding gas and Ti atoms of pre-deposited metal powders. In addition, the composite phase TiN·Ti 2 Cu occurred in the cladding layer, which also had a positive effect on anti-wearing. As Ti increased, the amount and grain size of TiN·Ti 2 Cu and TiN increased as a result. The hardness of the cladding layer increased with the increasing amount of reinforced phase generated in the layer. The hardness of the layer reached a maximum of 410 HV, which is nearly 5.1 times greater than that of copper. The TiN·Ti 2 Cu-and TiN-reinforced phases improved the wear resistance of the cladding layers. The cladding layer with 15 wt % Ti had the longsest launch stage (600 s) and the lowest fiction coefficient (0.56).

Effects of Cu-Ni-Ti Interlayer on Microstructure and Wear Resistance around Gas Tungsten Arc Cladding Copper Matrix Composite Coatings on Steel

“…Because of its superior properties, the copper-steel composite is widely used for aerospace, metallurgy, electric power, and other applications [3,4]. At present, the preparation methods of copper-steel composite structures mainly include explosive bonding [5], diffusion bonding [6], high-energy beam cladding [7], and arc cladding [8,9], etc. Arc cladding is developed based on arc welding and has significant advantages in production efficiency, process adaptability, and cost.…”

Directly Writing Patterning of Conductive Material by High Voltage Induced Weak Electric Arc Machining (HV-μEAM)

“…With the further development of lightweight, miniaturization, and functional integration of mechanical products, the application of microstructure and miniature devices with characteristic sizes ranging from nm to mm and with certain functions and patterns has increased at a rapid pace in various areas such as aerospace [1], instrumentation [2], material protection [3], and functional surface [4]. Micro-nanomanufacturing is a necessary means to achieve miniaturization and patterning of products and is an insurmountable and important link in the process of connecting design to application [5].…”

The Effect of Thickness on the Properties of Laser-Deposited NiBSi-WC Coating on a Cu-Cr-Zr Substrate

“…Therefore, surface engineering, including surface modification and surface repairs, are attractive techniques for improving component performance. For example, electroplating [1], thermal spraying [2], and arc cladding [3] have been adopted. However, the bonding strength between the coating and the copper substrate and/or insufficient wear resistance are critical problems when using these methods.…”