Galvanic corrosion - Study guides, Class notes & Summaries

Summary NACE CP2 Study Guide Complete Solutions Verified oxidation loss of electrons, positive charge atoms (anode) reduction gain of electrons, negative charged atoms (cathode) forms of corrosion uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hyd...

CWB Welding Inspector Level 2 Exam (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A Q: Define Erosion-Corrosion? Answer: description of the damage that occurs when corrosion contributes to erosion by removing protective films or scales, or by exposing the metal surface to further corrosion under the combined action of erosion and corrosion. Q: What kind of units/equipment are affected by Erosion, Erosion-Corrosion? Answer: All types of equip...

NACE CIP Level 1 Study Guide Questions and Answers Latest 2024/2025. What is Passivation? - AnswerA layer of oxides formed on the surface of a metal that provides corrosion protection. What is an example of passivation? - AnswerStainless Steel What are the elements of a corrosion cell? - AnswerAnode, Cathode, Metallic Pathway, Electrolyte Describe what happens at the anode. - AnswerThe metal dissolves into the electrolyte What is the function of the electrolyte? - AnswerAllows the passage ...

NACE CP2 Exam Questions and Answers (Graded A) NACE CP2 Exam Questions and Answers (Graded A) NACE CP2 Exam Questions and Answers (Graded A) oxidation - ANSWER-loss of electrons, positive charge atoms (anode) reduction - ANSWER-gain of electrons, negative charged atoms (cathode) forms of corrosion - ANSWER-uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, se...

Describe Passivation - correct answer Passivation is the formation of a protective oxide film on the surface reducing its chemical activity and its ability to corrode. Describe the following factors and how they affect corrosion: - correct answer • Oxygen: Oxygen increases the rate of corrosion. • Temperature: Corrosion usually accelerated with increasing temperature • Chemical Salts: Increase the rate of corrosion by increasing the efficiency of the electrolyte. • Humidity (or Wet...

As a dental amalgam restoration ages in the oral cavity, microleakage decreases because of? A)fluoride release B)galvanic currents C)increase in surface flow D)increase in edge strength E)formation of corrosion product Correct Answer: E)formation of corrosion product A fall in blood pressure could occur when a patient is experiencing each of the following conditions EXCEPT one. Which one is the EXCEPTION? A)shock B)syncope C)anxiety D)allergic reaction E)Addison's disease Corr...

How is the process of steel corrosion ALWAYS described? - ANSWER electrochemical Based on the galvanic series presented in the NACE CIP Level 1 Manual, which three can be used effectively as galvanic anodes for carbon steel? - ANSWER zinc, aluminum, magnesium A decrease in temperature will generally cause the corrosion rate to _____ - ANSWER decrease The electrolyte is a medium which carries the following type of current? - ANSWER Ionic Corrosion occurring uniformly across a surface ...

As a dental amalgam restoration ages in the oral cavity, microleakage decreases because of? A)fluoride release B)galvanic currents C)increase in surface flow D)increase in edge strength E)formation of corrosion product Correct Answer: E)formation of corrosion product A fall in blood pressure could occur when a patient is experiencing each of the following conditions EXCEPT one. Which one is the EXCEPTION? A)shock B)syncope C)anxiety D)allergic reaction E)Addison's disease Corr...

NACE CIP Level 1 CBT Exam Questions and Correct Verified Answers (2024 New Update) How is the process of steel corrosion ALWAYS described? : correct answer : electrochemical Based on the galvanic series presented in the NACE CIP Level 1 Manual, which three can be used effectively as galvanic anodes for carbon steel? : correct answer : zinc, aluminum, magnesium A decrease in temperature will generally cause the corrosion rate to _____ : correct answer : decrease The electrolyte is a m...

oxidation - ANSWER loss of electrons, positive charge atoms (anode) reduction - ANSWER gain of electrons, negative charged atoms (cathode) forms of corrosion - ANSWER uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hydrogen embrittlement, SCC (Car...