HOT TEST FLUID CONTAINING VAPOR PHASE INHIBITION

摘要

This invention covers formulation providing protection against corrosion in both the liquid and vapor phase. Such formulations are used in applications where engine parts or fuel cell systems are subjected to a running-in or hot test prior to final assembly or storage. The invention includes a concentrate as well as a dilute solution. The synergistic combination of inorganic ammonium derivatives in combination with monocarboxylic or dicarboxylic acids and a silicate dramatically increases the period of protection for both ferrous and aluminum alloys. This enables storage for a longer period when the engine parts are shipped or stored prior to assembling.