In Situ Phase Transformations in CrN/Cr-Сoated E110 Alloy under High Temperature

Autor: Syrtanov, Maxim, Pirozhkov, Alexey, Sidelev, Dmitrii
Zdroj: Key Engineering Materials; February 2022, Vol. 910 Issue: 1 p940-946, 7p
Abstrakt: The paper considers phase transformations in the E110 zirconium alloy with multilayer CrN/Cr coatings under linear heating up to 1250 °C with isothermal exposure for 20 min. The multilayer CrN/Cr coatings can decelerate Cr-Zr interdiffusion by formation of a barrier ZrN layer at the “coating-alloy interface” due to CrN decomposition at high temperature. The duration of barrier effect depends on a layer thickness of CrN/Cr multilayers. This effect results in a better corrosion resistance of the E110 alloy with multilayer CrN/Cr coatings under high-temperature oxidation at 1100 °C in air in comparison with Cr-coated E110 alloy.
Databáze: Supplemental Index