Hard-anodized is a widely used method in the aeronautical sector to improve aluminum alloys abrasion and corrosion resistance. Aim of this work was characterize mechanical properties resistance hard-anodized 6061 citric acid solution as replacement sulfuric were investigated. Aluminum alloy base material produce hard anodizing; process carried out solution, applying current densities 3 4.5 A/cm...

Titanium is a highly reactive metal so that a thin layer of oxide forms on its surface whenever exposed to the air or other environments containing oxygen. This layer increases the corrosion resistance of titanium. The oxide film is electrochemically formed through anodizing. In this study, anodizing of titanium was performed in phosphate-base solutions such as H3Po4, NaH2Po4, and Na2Hpo4 at 9....

Developing highly active and durable electrocatalysts, consisting of earth-abundant elements, for oxygen evolution reaction (OER) is pivotal large-scale water splitting hydrogen production. Herein, we report that the commercially available FeNiCo alloy can be converted to a electrocatalyst OER by galvanostatic anodizing in fluoride-containing ethylene glycol electrolyte. Anodizing develops poro...

Anodizing was applied to improve the heat dissipation performance of aluminum (Al) alloys, by forming an oxide layer, such that they could be employed in aerospace applications. The methods were hard sulfuric acid (high hardness), soft (low boric-sulfuric mixed acid, tin-sulfuric and chromic solutions. Each process completed under optimized conditions. surface morphology observed using field em...

Anodizing promises fast, cost-effective, and precise fabrication of mixed metal oxides from alloys complex chemistries compositions. Applicable to a whole class valve metals their alloys, this versatile method has found new dimensions its applicability unique combination non-valve in the quest finding applications. Hereby anodic passive films on Al-Ce thin-film combinatorial alloy library cover...

It is now established that hexagonally ordered domain structures can be formed in anodic alumina films by repeated anodization and stripping of the porous oxide. We find that the domain size is a linear function of time and increases with temperature. The pore density is initially high but decreases with anodizing time, as dominant pores deepen. Very small pores exist in native oxide in air or ...

M. Gombar, J. Kmec, Faculty of Management, University of Presov, Presov; M. Badida, L. Sobotova, Faculty of Mechanical Engineering, Technical University of Kosice, Košice, Slovakia The contribution researches and solves the suitability of utilize of electrolyte, consisting of the oxalic acid, boric acid, sodium chloride and aluminium cations in the process of anodizing aluminium in operating co...