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Corrosion & NDT Exam Study Guide with Verified Solutions

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Corrosion & NDT Exam Study Guide with Verified Solutions Chemical Corrosion - Answer-result of direct exposure of unprotected surface to a corrosive liquid or gas Metals more susceptible to corrosion are _____ and less susceptible are _____ - Answer-anodic, cathodic 4 things required for meta...

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  • October 6, 2024
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EmillyCharlotte
EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024




Corrosion & NDT Exam Study Guide
with Verified Solutions

Chemical Corrosion - Answer✔✔-result of direct exposure of unprotected surface to a corrosive liquid or

gas


Metals more susceptible to corrosion are _____ and less susceptible are _____ - Answer✔✔-anodic,

cathodic


4 things required for metals to corrode - Answer✔✔-1) A metal that will corrode (anode)


2) A dissimilar metal with less tendency to corrode (cathode)


3) Conductive pathway


4) Electrolyte


Most anodic will give up electrons _____ - Answer✔✔-most easily


What element is at the top of the nobility chart? - Answer✔✔-Mg


What are the 12 types of corrosion? - Answer✔✔-1) Uniform surface corrosion


2) Pitting


3) Intergranular


4) Exfoliation


5) Oxidization


Page 1/9

, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024


6) Galvanic


7) Concentration cell


8) Stress


9) Fretting


10) Filiform


11) Microbiological


12) Fatigue


Untreated uniform surface corrosion is indicated by _____ - Answer✔✔-clumps of white powder


Oxidization is also called - Answer✔✔-dry corrosion


Galvanic corrosion is also known as - Answer✔✔-disimilar metal corrosion


Filiform corrosion is normally caused by _____ - Answer✔✔-water under the paint


Smoking rivets are an example of _____ - Answer✔✔-fretting corrosion


Fatigue corrosion is caused by _____ - Answer✔✔-cyclic stress


7 Examples of corrosive agents - Answer✔✔-1) Acids and alkalis


2) Mercury


3) Liquids


4) Paint strippers




Page 2/9

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