Dewetting dynamics of metal/metallic coated ceramic systems at high temperatures
Year: 2024
Type: article
Abstract: This work focuses on kinetic analysis of high-temperature dewetting at metal/ceramic interfaces. Metal films were deposited on ceramics via magnetron sputtering, followed by wetting tests with tin, aluminum, and copper droplets. Results revealed asymmetric wetting-dewetting, indicating strong chemical bonds instead of reversible physical ones at high temperatures, deviating from traditional model predictions. Current room-temperature dewetting models (including hydrodynamic model, molecular kinetic theory and the combined model) fail to accurately describe high-temperature dewetting dynamics on metallized ceramics. Dewetting is governed by the metal film diffusion in droplets or the decomposition reaction kinetic at triple line, seen in diffusion-limited model in Sn/Ag-Ti on ZrO 2 and Sn/FeCoNiCrCu coated h-BN, and decomposition reaction model in Cu/FeCoNiCrCu on sapphire. These insights are crucial for designing stable high-temperature metallurgical interfaces.
Source: Applied Surface Science Advances
Authors: Ran Sui, Qiaoli Lin
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,970
OpenAlex ID: W4404850328