Example of intergranular corrosion

Q.  Knife Line Attack is a type of _______
- Published on 11 Sep 15

a. bimetal corrosion
b. intergranular corrosion
c. localized corrosion
d. uniform corrosion

ANSWER: intergranular corrosion


  • Sravanthi    -Posted on 16 Nov 15
    Knife Line Attack: It is a type of intergranular corrosion which stabilizes steel which is in contact with the weld after heating till the sensitization temperature.

    - This type of corrosion is called as knife line attack as the attack appears razor sharp.

    - Knife line attack can be prevented by restabilizing metals by post welding heat treatment at a temperature of 1065°C.

    - Intergranular corrosion: This corrosion occurs on the grain boundaries of metals. This corrosion is caused due to difference in chemical composition, migration of impurities, etc.

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