Long-term oxidation resistance and deterioration mechanism of magnetron sputtered Cr-Al-Si-N coatings on zirconium alloys in 1200 °C steam atmosphere
Source abstract
Abstract
Abstract Oxidation behavior of magnetron sputtered Cr-Al-Si-N coatings on zirconium-alloy coupons was studied in 1200 °C steam up to 8 h, revealing the microstructural evolution and the oxidation resistance by electron microscopy. A ∼310 μm thick Zr-O layer formed on the uncoated coupon after the 6 h oxidation, whereas the coated coupon retained almost unoxidized, due to a homogenous and stable bilayer scale of Cr2O3/α-Al2O3 on the surface. It was assumed that the column-free structure and isotropic nanostructure of coatings could favor a timely and in situ formation of the bilayer scale, followed by long-term maintenance of its integrity.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear Materials and Properties · Fusion materials and technologies · High-Temperature Coating Behaviors
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