Development of a novel nanoscratch technique for quantitative measurement of ice adhesion strength

International Conference on Materials Engineering and Applications

Loho, T.^1 ; Dickinson, M.^1

Department of Chemical and Materials Engineering, University of Auckland, Auckland, New Zealand^1

关键词: Adhesion measurement;    Ice adhesion strength;    Ice surfaces;    Lateral force;    Micro-nano scale;    Nano-scale surface roughness;    Nanoindenters;    Quantitative measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/348/1/012003/pdf
DOI  :  10.1088/1757-899X/348/1/012003

来源: IOP

【 摘 要 】

The mechanism for the way that ice adheres to surfaces is still not well understood. Currently there is no standard method to quantitatively measure how ice adheres to surfaces which makes ice surface studies difficult to compare. A novel quantitative lateral force adhesion measurement at the micro-nano scale for ice was created which shears micro-nano sized ice droplets (less than 3 μm in diameter and 100nm in height) using a nanoindenter. By using small ice droplets, the variables associated with bulk ice measurements were minimised which increased data repeatability compared to bulk testing. The technique provided post- testing surface scans to confirm that the ice had been removed and that measurements were of ice adhesion strength. Results show that the ice adhesion strength of a material is greatly affected by the nano-scale surface roughness of the material with rougher surfaces having higher ice adhesion strength.