Abstract Structural, chemical, and thermodynamic behaviours of metallic nanostructures surrounded by a variety of ceramic/refractory materials play a crucial role in their high-temperature applications. In this work, we report the effect of high-temperature annealing on a system of Au@SiO2 core-shell nanoparticles dispersed on Si3N4 grids. The thermal degradation of the Au–SiO2–Si3N4 system has been explained using minute compositional changes at different interfaces involving Au–SiO2, SiO2–Si3N4 and Au–Si3N4. High Angle Annular Dark Field Imaging coupled with Energy Dispersive X-ray Spectroscopy elemental mapping technique has been used for the same. Possible reactions among SiO2 and Si3N4 substrate with the aid of Au at high temperature leading to thermal decomposition of the system have been explained using High-Resolution Transmission Electron Microscopy and Selected Area Electron Diffraction analysis.

中文翻译：

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Au@SiO2核壳纳米粒子在Si3N4支撑膜上的温度依赖性界面行为

摘要 被各种陶瓷/耐火材料包围的金属纳米结构的结构、化学和热力学行为在其高温应用中起着至关重要的作用。在这项工作中，我们报告了高温退火对分散在 Si3N4 网格上的 Au@SiO2 核壳纳米粒子系统的影响。Au-SiO2-Si3N4 系统的热降解已经通过不同界面的微小成分变化来解释，包括 Au-SiO2、SiO2-Si3N4 和 Au-Si3N4。高角度环形暗场成像与能量色散 X 射线光谱元素映射技术已被用于相同的目的。