Hydrothermal corrosion of TiAlN and CrN PVD films on stainless steel

Vacuum-arc chromium-based coatings for protection of zirconium alloys from the high-temperature oxidation in air

“…It is well known, that even little additions of chromium in zirconium increase the heat resistance of the latter [15]. The corrosion resistance of Cr-N coatings is better than that of the stainless steel and other nitride coatings in the high-temperature pressurized water [16,17] and the oxidation rate in air at ≈ 600 ÷800 °С is low [18].…”

Corrosion performance of ZrN/ZrO 2 multilayer coatings deposited on 304 stainless steel using multi-arc ion plating

“…However, when it is used in an environment containing chloride ions, several corrosion related phenomena such as stress induced corrosion, pitting corrosion and intergranular corrosion often occur, and it is well known that the chloride ions are commonly existed in salt, sweat, sea water and soil. In recent years, research has been focused on solving the above problems using various types of coatings, such as TiN [1], ZrN [2], TiAlN [3], TiSiN [4], ZrO2 [5], Ti/TiN [6], CrN/TiN [7], TiN/TiAlN [8]. Among these coatings, ZrN has an outstanding anti-corrosion property, and zirconium metal possesses a high melting point and a good corrosion resistance.…”

Ceramic coating for corrosion (c3) resistance of nuclear fuel cladding

“…In addition, the increase in nitrogen partial pressure was expected to assist in modifying the metal/nitrogen ratio as it was believed that unreacted or lightly bound aluminum was diffusing to the coating surface and reacting with the water forming the boehmite phase. However, as shown in Table 2 Previously Korablov [48] claimed that PVD TiAlN with Ti/Al=55 at% was composed of a high amount of AlN that can be hydrolyzed in water easily and demonstrated the existence of the boehmite phase after 3 h exposure to water at 300ºC, however no information was provided about the nucleation and growth mechanism of the boehmite phase. Abid [49] observed the formation of boehmite phase on AlN PVD thin film surface upon reacting with boiling water, however no information was also given about the nucleation and growth mechanisms.…”