Determination of Gold Surface Mechanical Behavior in Electro-Thermo-Mechanical Coupled Service Using Atomic Force Microscopy

Quan Wang; Ran Hu; Jin Zhang; Ping Yang

doi:10.4028/www.scientific.net/AMR.266.209

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Determination of Gold Surface Mechanical Behavior in Electro-Thermo-Mechanical Coupled Service Using Atomic Force Microscopy
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 266Determination of Gold Surface Mechanical Behavior...

Determination of Gold Surface Mechanical Behavior in Electro-Thermo-Mechanical Coupled Service Using Atomic Force Microscopy

Abstract:

In this paper, gold (Au) surface mechanical behaviors in electro-thermo-mechanical coupled service are studied using atomic force microscopy. The experimental results indicate that some pile-ups of the metal, caused by indentation, are formed whether or not an external electric field is applied during indentation. Scanned topographical images reveal a bright area around the indentation hole, indicating the area where the material had been pushed out. It was determined that when a DC external field is applied to a sample, the hardness value of the tested sample presents an increase trend with the increment of electric current, but a decrease trend for the residue area and the elastic modulus.