Aluminum alloys are indispensable in industrial applications due to their excellent mechanical properties, but they are prone to corrosion in humid environments. Micro-arc oxidation (MAO) technology can form a ceramic-like oxide layer on their surface, significantly enhancing corrosion resistance and other properties. This study used aluminum alloys as substrates, added sodium molybdate to a silicate electrolyte, and prepared MAO/ Na2MoO4 composite films using a constant-voltage mode. Optimized process parameters were determined as: current 2A, positive voltage +400V, negative voltage -50V, frequency 500Hz, time 10min, duty cycle 30% (1:1). The electrolyte composition was 20g/L Na2SiO3, 4 g/L Na2MoO4 , 2g/L NaOH, and 1g/L NaF. Electrochemical testing demonstrated enhanced corrosion resistance, with no corrosion observed after 600 hours of salt spray testing. This research provides theoretical foundations and technical support for surface protection of alloy materials.
In the field of new energy vehicles, enhancing the corrosion resistance of aluminum alloy terminals while maintaining their high conductivity presents a significant challenge. Traditional anodized Al alloy surfaces fail to meet service conductivity demands. Here, a FeCoNiCrMo high‐entropy coating was electrodeposited...
This study presents a comparative assessment of organic coating systems applied to nano-treated 1050, 5005, and 7075 aluminum alloys, aiming to enhance corrosion resistance in high-performance industrial environments. The alloys were subjected to a zirconium oxide-based nano pretreatment with varying activation duratio...
Canberk Minaz, Fatih Apaydın· Pamukkale Üniversitesi Mühen...· 0 citations
For nickel–titanium products intended for medical applications, surface stability in physiological environments is one of the key factors determining the long-term performance of the material. Despite the presence of a naturally formed passive layer, TiNi alloys may undergo corrosion degradation, accompanied by changes...
E. A. Bolshevich, S. G. Anikeev· Materials. Technologies. Des...· 0 citations
Magnesium alloys, particularly AZ91, have emerged as promising candidates for biomedical implants due to their low density, biocompatibility, and mechanical properties resembling natural bone. However, their high chemical reactivity and poor corrosion resistance in physiological environments remain major limitations....
Z. Kolahi, V. Pouyafar, R. Meshkabadi et al.· Materialwissenschaft und Wer...· 0 citations
Aluminum bronze alloys are widely used in marine engineering components due to their good mechanical properties, wear resistance, and corrosion resistance. However, surface degradation such as wear and corrosion remains a challenge during long-term service. In this study, nanosecond pulsed laser surface melting (LSM) w...
Ling-Yu Guo, Hao-Jun Cheng, Fu-Shao Li et al.· Materials· 0 citations
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