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In this work the microstructure as well as the electrochemical behaviour of coated AISI 4340 steel substrates are reported. Titanium, reactive titanium nitride (TiN) and TiN films, obtained from a titanium film nitrided at 900°C, were deposited on steel substrates by magnetron sputtering. A solid titanium sample was also nitrided at 900°C for the purpose of comparison. The study of corrosion resistance...
The corrosion behavior of sputter-deposited Cr-Nb alloys in 12 M HCl solution was investigated by electrochemical and XPS methods. All of the Cr-Nb alloys are spontaneously passivated in 12 M HCl solution open to air at 30°C. The open circuit potentials for chromium-rich alloys containing 42 at% or less niobium are located in the passive region of chromium and niobium, but those for niobium-rich...
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