Tribocorrosion and the surface repassivation behavior of Monel 400 alloy in artificial seawater

Abstract

Purpose This paper aims to study the tribocorrosion and the surface repassivation behaviors of Monel 400 alloy in artificial seawater. Design/methodology/approach In this study, the tribocorrosion behavior of Monel 400 alloy was studied under different applied loads in artificial seawater by using a pin-on-disk tribometer equipped with an electrochemical workstation. The applied loads were selected ranging from 50 to 200 N. The surface repassivation behavior of Monel 400 alloy was studied by X-ray photoelectron spectroscopy. Findings It was demonstrated that mass loss was determined by the combined effect of mechanical wear and chemical corrosion. The surface repassivation mechanism of the alloy is that layer corrosion product film formed on the surface of Monel 400 alloy, which can protect metal matrix from future corrosion. Originality/value This research adds original content in revealing the tribocorrosion and surface repassivation behaviors of Monel 400 alloy under different loads, which offer a theoretical basis for the application under the corrosion and wear environment of Monel 400.

Analysis of processing efficiency, surface, and bulk chemistry, and nanomechanical properties of the Monel® alloy 400 after ultrashort pulsed laser ablation

“…Accordingly, in figures 8(a)-(c), the polished and laserablated Monel ® alloy 400 has a lot of NiO and very little metallic Ni on its surface. This demonstrates that the passive film's surface outer layer is primarily made of NiO, whereas the inside layer is primarily made of Ni [55].…”

“…The higher percentage of CuO in figures 8(e), (f) demonstrates that the outer layers on the laser-ablated surfaces are primarily composed of CuO, whereas the interior layers are composed primarily of Cu [55].…”

Effect of scan speed on corrosion and tribocorrosion properties of cobalt-chromium alloy in situ produced by selective laser melting

“…Moreover, the contacting surfaces are immersed in the body fluid, so corrosion could occur. As a result, metallic materials should have higher resistance to tribocorrosion for this type of application (Çomaklı, 2021; Lu et al , 2022; Ma et al , 2018). However, there is no adequate study on the nature of the relationship between corrosion and tribocorrosion of CoCrMoW manufactured with SLM with scan speed.…”

Laser Processing of Diffusion Boronized Layer Produced on Monel® Alloy 400—Microstructure, Microhardness, Corrosion and Wear Resistance Tests

“…Nickel alloys are widely used in the automotive and chemical or marine industries. A representative of such alloys is Monel ® Alloy 400, but its low hardness and wear resistance restrict the fields in which it can be applied [1,2]. Although it has good corrosion resistance, mechanical properties are undoubtedly important.…”