inhibition of stainless steel against chloride ion

[aligali]

Hi dear colleagues
what are ways for protection of stainless steel cladding against chloride ion saturated water?

 

[CoryPad]

Alloy with Mo at a concentration near 6 % by mass.

 

[EdStainless]

Not by chemically treating the water, only by using a better alloy.

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Plymouth Tube

 

[SJones]

Cathodic protection?

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04

 

[strider6]

what kind of stainless steel and at what chloride conc and temp?

S.

Corrosion Prevention & Corrosion Control

 

[moltenmetal]

We could hope you mean "insulation cladding", in which case the answer would be "paint"...

If you mean "internal vessel cladding", you're beat-

 

[EdStainless]

Well, raising the sulfate level will lessen the impact of the chlorides slightly. This isn't a practical inhibition method.

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Plymouth Tube

 

[aligali]

hi dear colleagues and thanks for your attentions
I mean "internal vessel cladding" and the water cut of petrolume flude has 10000 ppm chloride salts and temperature is between 60 and 100 C degree. we inject a water soluble inhibitor but the Fe content in outlet water from seperator is high.

 

[andyfox1]

You could try

http://www.sub-one.com

- it's a pretty new process but if they can get it pinhole free you should have a reasonably long-lasting coating...

Andy

 

[strider6]

did u made an inspection on the vessel to see what is happening? you didn't tell what kind of SS is...if it's a 316 then i think you make a wrong material selection..

S

Corrosion Prevention & Corrosion Control