No, I am referencing the existing engineering concept known as "stiction". Aluminum deforms on the surface when compressed into another surface and doesn't like to release. I don't know how that interacts with coefficients of friction since we aren't talking about stuff moving but the threshold that has to be reached first before they can move. Aluminum generally has more stiction, while materials like brass and bronze are known for being "self lubricating". This is probably related to galling as well.