Effect of alloying element on microstructure, mechanical property, and oxidation resistance of Zr─Me─C (Me═Si/Y) coatings
Source abstract
Abstract
Abstract Accident‐tolerant fuels (ATFs) are proposed to provide improved safety response to a loss of coolant accident (LOCA) scenario while maintaining good operational characteristics under normal conditions. In this work, Zr─Me─C (Me═Si or Y) was proposed as candidate coatings for ATF applications. The influence of Si and Y with varied concentration on microstructural evolution, mechanical property, and oxidation resistance of Zr─Me─C coatings were investigated. Based on combined results of X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, and X‐ray photoelectron spectroscopy, it was found that Si or Y doped ZrC 0.55 coatings presented tunable composition and microstructure. Improved air oxidation and spallation resistance were achieved with the incorporation of Me atoms, attributing to the formation of SiO 2 and ZrSiO 4 and/or the stabilization of zirconia. Under a simulated LOCA condition, decreased weight gains of 13.6 at.% Si and 22.5 at.% Y coated Zry‐4 alloys were achieved. nc‐ZrSiC/nc‐ZrSi (13.6 at.% Si) coating exhibited enhanced mechanical property and oxidation resistance in both high‐temperature air and LOCA conditions, which could be regarded as potential candidate for the applications in ATFs.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Nuclear Materials and Properties · High-Temperature Coating Behaviors · Fusion materials and technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shenyang National Laboratory for Materials Science, Institute of Metal Research Chinese Academy of Sciences Shenyang China
Life Management Technology Center, Suzhou Nuclear Power Research Institute China Nuclear Power Technology Research Institute Suzhou China
Funding
National Natural Science Foundation of China
References (49)
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