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Tribocorrosion
Published in Czesław Kajdas, Ken'ichi Hiratsuka, Tribocatalysis, Tribochemistry, and Tribocorrosion, 2018
Czeslaw Kajdas, Ken’ichi Hiratsuka, Feng Gao, Sukbae Joo, Hong Liang
Tribocorrosion processes are very widely spread, including among others: automotive, aeronautic, and naval industries, mining plus metallurgy, chemical and crude oil industries, medical prostheses and micronanotechnologies. Works [5,6] present more detailed information/data on tribocorrosion. Paper [6] defines tribocorrosion as the electrochemical and mechanical process leading to wear of metallic materials immersed in a corrosive environment under sliding or rolling contact conditions. Due to synergy effects between mechanical and electrochemical phenomena, the material loss in tribocorrosion usually is very higher. Early paper by Landolt et al. [7] reviewed and discussed the synergy effects. The friction process significantly affects the corrosion resistance of metallic surfaces. On the other hand, the corrosion process influences the composition of material surfaces by enhancement of adsorbed layers and corrosion oxides, and thereby changes their mechanical properties. Significance of tribocorrosion in biomedical applications has recently been overviewed by Mathew et al. [8].
Specific testing techniques in tribology: laboratory techniques for evaluating friction, wear, and lubrication
Published in J.-P. Celis, P. Ponthiaux, Testing tribocorrosion of passivating materials supporting research and industrial innovation: Handbook, 2017
Corrosion wear is one of the common wear mechanisms observed on components. The sliding action exposes fresh material to its environment and this material further reacts with the corrosive media. The brown debris (Fe2O3·nH2O or FeO(OH), Fe(OH)3) noticed in tribological tests on low carbon steels is an example of corrosion wear. Dental bracket-wire combinations, the acetabular cup–femoral head in hip implants, undersea drills, and fretting contacts made of reactive materials operating in ambient air, all suffer from corrosive wear. The synergism between wear and corrosion is a complex event known as ‘tribocorrosion’. Corrosion wear is one of the most accelerated forms of wear because materials undergo a combined mechanical and chemical attack.
NP-ODE: Neural process aided ordinary differential equations for uncertainty quantification of finite element analysis
Published in IISE Transactions, 2022
Yinan Wang, Kaiwen Wang, Wenjun Cai, Xiaowei Yue
Tribocorrosion is a material degradation process involving both mechanical wear and corrosion of the material, which jeopardizes a material’s long-term sustainability and structural integrity. Tribocorrosion analysis is very important for design and manufacturing systems. The synergetic effects of mechanical damage and corrosion can cause more severe material degradation than the sum of pure wear and corrosion. To investigate the effects of a material’s mechanical and electrochemical properties on their tribocorrosion behavior, an FEA model is developed to simulate both the dynamic process of wear and the time-dependent evolution of a corroding surface during tribocorrosion. We conduct an experimental study of two aluminum alloys (with 5 wt% Mn and 20 wt% Mn, respectively). The scheme of FEA and the meshed geometry are shown in Figure 8. The model first simulates a scratching wear process and produces results including the wear volume loss, and surface and subsurface stress and strain caused by the process. A phenomenological model reflecting the change in anodic potential caused by plastic strain is used to incorporate the wear–corrosion synergy. The corrosion process simulation considers the impact on the electrochemical state of the system caused by mechanical deformation.
Assessing the Tribocorrosion Performance of Nickel–Aluminum Bronze in Different Aqueous Environments
Published in Tribology Transactions, 2019
Beibei Zhang, Jianzhang Wang, Hao Liu, Junya Yuan, Pengfei Jiang, Fengyuan Yan
Tribocorrosion is a degradation phenomenon of materials resulting from the simultaneous mechanical and electrochemical interactions for a tribological contact in a corrosive environment (Chen, et al. (1); Zhang, et al. (2)). The combined action of mechanical loading and corrosion attack often results in a synergism and, hence, the total material loss under tribocorrosion condition is significantly higher than the simple sum of the degradation due to individual process (Dalmau, et al. (3); Zhang, et al. (4); Xiao, et al. (5)). Detrimental as it is, the tribocorrosion phenomenon is encountered in many areas, especially in the field of ocean exploitation. Marine machinery and devices, such as offshore platforms, shipping, and seawater handling systems, have played an important role in ocean development and exploitation (Kowk, et al. (6); Basumatary, et al. (7)). Usually, the key components of these systems suffer from enhanced material degradation due to the synergistic effects between wear and corrosion when the moving parts work in a corrosive marine environment. It is generally acknowledged that the occurrence of tribocorrosion in marine engineering causes enormous economic losses accounting for 3.5% the gross domestic product in industrialized countries (Wood (8, 9)). Additionally, it can pose a potential safety risk and indirectly cause environmental pollution if failures take place.
Tribocorrosion behaviours of cold-sprayed diamond–Cu composite coatings in artificial sea water
Published in Surface Engineering, 2018
Zhe Wang, Xiuyong Chen, Yongfeng Gong, Xiaoyan He, Yingkang Wei, Hua Li
The corrosive wear behaviours of the coatings were evaluated by sliding wear testing and in situ electrochemical measurements in artificial sea water (ASW) prepared according to ASTM D1141–98. Sliding wear testing was performed on a tribometer (Rtec, MFT-3000, U.S.A.) with the ball-on-disc reciprocating mode using the Si3N4 balls of 6 mm in diameter as the counterpart. A constant load of 10 N, oscillating stroke of 5 mm, sliding speed of 0.02 m s−1, and sliding distance of 72 m were chosen for the testing. The friction coefficient-time plots were recorded automatically and each measurement was performed three times. Based on the wear track depth profiles detected by a surface profiler (Alpha-Step IQ, KLA Tencor, U.S.A.), wear losses of the coatings can be obtained after the sliding testing. Electrochemical characterisation was done with an external potentiostat (Modulab 2100A, Solartron Analytical U.K.) in ASW. A standard saturated calomel electrode was used as the reference electrode and platinum was used as the counter electrode. To examine the tribocorrosion behaviours of the samples, a series of experiments were conducted: (1) corrosive wear testing was carried out in open circuit potential (OCP) condition and the evolution of OCP was recorded; (2) potentiodynamic testing involved measurement of polarisation curves during sliding and corrosion only, and it was initiated after a stable OCP. The electrode potential was raised from −0.5 to 0.5 V at a scanning rate of 0.5 mV s−1.