Hydrophobic surfaces for heat exchangers via atomic layer deposition

Abstract

A method of applying a hydrophobic surface coating to one or more internal surfaces of a fluid passage component, the method including: flowing a rare earth precursor into the fluid passage component; allowing the rare earth precursor to react with the one or more internal surfaces of the fluid passage component; removing excess rare earth precursor from the fluid passage component; flowing an oxide forming precursor into the fluid passage component; allowing the oxide forming precursor to react with the rare earth precursors on the one or more internal surfaces to form a hydrophobic surface coating on each of the one or more internal surfaces; and removing excess oxide forming precursor from the fluid passage component.

Dependencies are inferred from the claim text.