Effect of thermal annealing on the mechanical properties of low-emissivity physical vapor deposited multilayer-coatings for architectural applications

Meszaros R, Merle B, Wild M, Durst K, Göken M, Wondraczek L (2012)

Publication Type: Journal article

Publication year: 2012

Journal

Thin Solid Films Elsevier

Book Volume: 520

Pages Range: 7130-7135

Journal Issue: 24

DOI: 10.1016/j.tsf.2012.07.086

Abstract

Low-emissivity (low-E) coatings comprising a stack of multiple physical vapor deposited metallic and dielectric layers play an important role in energy management of modern buildings. The production process of such architectural glazings often requires that the coatings withstand a short-term thermal load of up to 700~°C. Here, we report on thermally-induced variations in the mechanical properties of representative large-area magnetron-sputtered low-E stacks on glass, developed specifically for high temperature stability. Coatings are investigated before and after heat treatment by bulge testing, curvature analyses using Stoney's equation, and nanoindentation. For as-deposited coatings, an in-plane residual compressive stress about 48~MPa and Young's modulus of 120~GPa are found, depending on the type of substrate. Short-term exposure to up to 700~°C converts this situation to in-plane residual tensile stress of >~400~MPa, while Young's modulus decreases to about 105~GPa. These changes in the residual stress state are explained on the basis of structural, topological and dimensional changes in the coating stack. They identified as one of the primary factors governing temperature-resistance of low-E coatings.

Authors with CRIS profile

Robert Meszaros Lehrstuhl für Glas und Keramik Benoit Merle Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Karsten Durst Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Lothar Wondraczek Professur für Werkstoffwissenschaften (Glas und Keramik)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Involved external institutions

Interpane Glas Industrie AG DE Germany (DE)

How to cite

APA:

Meszaros, R., Merle, B., Wild, M., Durst, K., Göken, M., & Wondraczek, L. (2012). Effect of thermal annealing on the mechanical properties of low-emissivity physical vapor deposited multilayer-coatings for architectural applications. Thin Solid Films, 520(24), 7130-7135. https://dx.doi.org/10.1016/j.tsf.2012.07.086

MLA:

Meszaros, Robert, et al. "Effect of thermal annealing on the mechanical properties of low-emissivity physical vapor deposited multilayer-coatings for architectural applications." Thin Solid Films 520.24 (2012): 7130-7135.

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