Question

Which of the following is/are the preventive measures of fretting corrosion?

(a) Lubricate with low-viscosity, high-tenacity oil

(b) Increasing surface hardness by shot-peening or cold working

(c) Use gaskets to absorb vibrations

(d) Lubricate with low-viscosity, high-tenacity oil, increasing surface hardness by shot-peening and use gaskets to absorb vibrations

The question was asked in an internship interview.

My question comes from Eight Forms in portion Eight Forms of Corrosion of Corrosion Engineering

Answer 1

Correct choice is (d) Lubricate with low-viscosity, high-tenacity oil, increasing surface hardness by shot-peening and use gaskets to absorb vibrations

Explanation: Preventive measures to minimize fretting corrosion:

i. Lubricate with low-viscosity, high-tenacity oil, and greases

ii. Increasing surface hardness by shot-peening or cold working

iii. Use gaskets to absorb vibrations and exclude oxygen at bearing surfaces

iv. Increase the load to decrease slip between two metals.