Nace 3 Study Guide Chapters 1-5

How do Pollutants and Acid Gases affect corrosion: {Ans: In addition to the direct effect of chemical attack, these materials reduce the electrical resistance of the electrolyte. Reduction of resistance in the corrosion cell permits higher corrosion currents so increased corrosion rates occur.}What are some common errors when using an electric hygrometer {Ans: Failure to acclimate the instrument to the environment with adequate time.}Coatings Specification {Ans: Formal, structured document containing information on a project (scope, terms, schedule, inspection, etc.)}How do electrons and ions travel. {Ans: Electrons travel through metal, Ions travel through an electrolyte.}Coating should only be applied to a substrate when that substrate is {Ans: 5F above the determined dew point in order to prevent moisture on the surface from being coated.}During the day Steel usually {Ans: absorbs heat and it is usually warmer than the air temperature.}