US Patent 7253092 Tungsten plug corrosion prevention method using water

Disclosed herein is a method of making integrated circuits. In one embodiment the method includes forming tungsten plugs in the integrated circuit and forming electrically conductive interconnect lines in the integrated circuit after formation of the tungsten plugs. At least one tungsten plug is electrically connected to at least one electrically conductive interconnect line. Thereafter at least one electrically conductive interconnect line is contacted with water for a period of time less than 120 minutes.