Study of heat induced changes in elastic properties of multilayer Mo/ZrSi2 membranes
2017
Abstract The paper describes a technique for manufacturing of sub-micron metal membranes based on magnetron deposition of multilayer structures. Tensile stress, biaxial elastic modulus and mechanical strength of 25–50 nm thick multilayer Mo/ZrSi 2 membranes were measured, and the behavior of these parameters before and after vacuum heating of samples at the level of heat loads up to 1 W/cm 2 was studied. The elastic properties were obtained from measurements of deformation dependence of the round membranes on the applied pressure differential. A rapid increase in tensile stress of a 25 nm thick Mo/ZrSi 2 film was observed at a uniform heat load of 0.25 W/cm 2 which was probably caused by desorption of water molecules from the membrane surface.
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