Abstract
In this study, four kinds of nanoparticles, graphite, WS2, Fe3O4, and TiN, were used as lubricating additives for steel/copper friction pairs to solve the problem of welding contact tube wear with non-copper-coated solid wire at high temperature. The single and composite nanoparticles have excellent dispersion stability in absolute ethanol under the action of the compound surfactant NaSTA + OA + PVP (i.e., sodium stearate, oleic acid, and polyvinylpyrrolidone). The tribological test results showed that the maximum decrement, with reference to the average coefficient of friction and wear volumes, were measured with nanoparticle concentration in 1:1:1 ratio at 300 °C. Compared with dry friction, the average friction coefficient and wear volume are reduced by 74.3% and 84.8%, respectively, which may be attributed to the formation of a stable tribo-film mainly composed of C–O, Fe2O3, WO3, TiO2, TiNxOy composite on the worn surface. Therefore, it is considered that the combined lubrication effects of the ball-bearing effect, repairing of worn surfaces, and the tribo-film resulted in the lowest friction and wear.
Funder
National Natural Science Foundation of China
Beijing Municipal Natural Science Foundation
Subject
General Materials Science,General Chemical Engineering
Reference21 articles.
1. Global Progress on Welding Consumables for HSLA Steel
2. High-performance, non-copper-coated solid wire for MAG welding SE wire;Koshiishi;Kobelco Technol. Rev.,2001
3. Comparison of mechanical properties on 15CDV6 steel plates by TIG welding with and without copper coated filler wires;Sapthagiri;Int. J. Adv. Res. Found.,2015
4. Welding fume reduction by nano-alumina coating on electrodes – towards green welding process
5. Effect of the Wear of Contact Tips on the Weld beads made by GMAW Process;Koh;J. Korea Acad. Ind. Coop. Soc.,2011
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献