caa a22 4500 477050425 CHVBK 20180405111339.0 cr unu---uuuuu 170330e19961001xx s 000 0 eng 10.1007/BF00242194 doi (NATIONALLICENCE)springer-10.1007/BF00242194 Effect of coating thickness and surface treatment of titanium on the properties of IrO2-Ta2O5 anodes [Elektronische Daten] [J. Krýsa, L. Kule, R. Mráz, I. Roušar] The effect of coating thickness and the effect of surface treatment of the titanium base metal on the surface morphology and electrochemical properties of IrO2-Ta2O5 anodes were investigated. It was observed that for an iridium content of 0.45-1.2 mg cm−2 the service life is proportional to the iridium content in the coating. During etching of titanium in 5% HF at 25 °C a surface with macroroughness is formed, while during etching in HCl at 30, 50 and 80°C a microrough surface with visible pitting is formed. The morphology of the IrO2-Ta2O5 active layer (0.32-0.39 mg Ir cm−2) depends strongly on the pretreatment of the titanium base metal. After etching of titanium in HF, the resulting IrO2-Ta2O5 layer is adherent to the macrorough surface of the titanium base metal. After etching of titanium in HCl the resulting surface of the IrO2-Ta2O5 layer is microrough with partly filled pitting holes. The service life of IrO2-Ta2O5 coating with different roughness does not differ and has a value of 1500 ± 400 h (0.5 M H2SO4, 25 °C and j = 2 A cm−2). Chapman & Hall, 1996 Krýsa J. Department of Inorganic Technology, Institute of Chemical Technology, Technicka 5, 166 28, Prague 6, Czech Republic aut Kule L. Department of Inorganic Technology, Institute of Chemical Technology, Technicka 5, 166 28, Prague 6, Czech Republic aut Mráz R. Department of Inorganic Technology, Institute of Chemical Technology, Technicka 5, 166 28, Prague 6, Czech Republic aut Roušar I. Department of Inorganic Technology, Institute of Chemical Technology, Technicka 5, 166 28, Prague 6, Czech Republic aut Journal of Applied Electrochemistry Kluwer Academic Publishers 26/10(1996-10-01), 999-1005 0021-891X 26:10<999 1996 26 10800 https://doi.org/10.1007/BF00242194 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00242194 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Krýsa J. Department of Inorganic Technology, Institute of Chemical Technology, Technicka 5, 166 28, Prague 6, Czech Republic aut NATIONALLICENCE 700 1- Kule L. Department of Inorganic Technology, Institute of Chemical Technology, Technicka 5, 166 28, Prague 6, Czech Republic aut NATIONALLICENCE 700 1- Mráz R. Department of Inorganic Technology, Institute of Chemical Technology, Technicka 5, 166 28, Prague 6, Czech Republic aut NATIONALLICENCE 700 1- Roušar I. Department of Inorganic Technology, Institute of Chemical Technology, Technicka 5, 166 28, Prague 6, Czech Republic aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 26/10(1996-10-01), 999-1005 0021-891X 26:10<999 1996 26 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer