Corrosion comparison Gas-liquid 1

[MBWijngaarden]

I would like to know the difference in corrosivity e.q. what is more corrosive. Gas or liquid H2SO4 of high percentage (between 94 and 98 %) and operating at 50 degree celcius with a maximum of 140 degree celcius.

I would like to use this information to place a sample of some metal in the tank to calculate the corrosion rate.

 

[strider6]

you have corrosion in the gas phase if the acid and water condense.. if there is no condensation you'll not have any corrosion...

http://www.corrosionist.com/corrosion_protection_sulfuric_acid.htm

S

Corrosion & Rust Prevention Control

 

[cloa]

Depends on the metal.

 

[zdas04]

It doesn't depend on the metal, it depends on the presence of liquid as strider6 said. I can't set up a viable galvanic cell without an electrolyte and gas is not an electrolyte.

David