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Anonymous Poster

Strip turbine blades coating

04/23/2008 4:36 PM

Hi, I need process or liquid solution (Acid) for strip coating for industrial turbines blades.

Thank
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Casper
Active Contributor
South Africa - Member - New Member

Join Date: Apr 2008
Location: Z.A JHB
Posts: 12
#1

Re: Strip turbine blades coating

04/24/2008 2:17 AM

Hi guest

your turbine blades are coated with what?
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Anonymous Poster
#3
In reply to #1

Re: Strip turbine blades coating

04/24/2008 2:21 PM

with Al-Pt pack process, and some cases only Al difusion pack
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Pineapple
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Join Date: Jan 2008
Location: Toronto, Canada
Posts: 302
Good Answers: 4
#2

Re: Strip turbine blades coating

04/24/2008 10:46 AM

Try sandblasting.

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RHABE
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Join Date: Dec 2006
Location: Germany 49° 26' N, 7° 46' O
Posts: 1950
Good Answers: 109
#4

Re: Strip turbine blades coating

04/25/2008 5:04 AM

Hi,

so if your coating is mostly Al203 = alumina then this is soluble in HNO3 around 20% concentration and warm if not acting with sufficient velocity.

But this will attack also your base-metal, so you should add the nitrates of your base-metal to slow down this dissolution. May be this works, may be not.

Else you can try to dissolve the alumina in molten Na2CO3 (Soda), this will selectively dissolve only the oxides.

Please try and let us know what are the results.

RHABE
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