Use of sacrificial anodes

[JNJdropout]

Are sacrifical anodes only used where two dissimilar metallic parts are in contact with eachother in an electrolyte, or are they beneficial in protecting a stand alone, single metal part from corrosion due to sulfuric acid. Process I'm talking about is continuous anodizing of an aluminum strip.

Thanks

 

[StephenA]

I have used plenty of sacrificial anodes on steel pipes (single metal)in seawater.

 

[JJPellin]

We use sacrifical anodes in almost all of our carbon steel heat exchangers on the cooling water side. Our cooling water is neutral PH and not salty.