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Corrosion of 316 stainless steel by Metalorganic Cp2Mg

Hi,

I have a 316 stainless steel MOCVD reactor with several high surface area machined sections. I suspect that one of the reaction gases containing metal-organic BIS CYCLOPENTADIENYL MAGNESIUM (Cp2Mg) reacts with the free iron (Fe) and to lesser degree manganese (Mn) on the stainless steel surface contaminating my films with Fe and Mn.

I am looking for a good stainless steel passivation and/or coating technique that would be corrosion/reaction resistant to Cp2Mg. My thinking is a stainless steel finish leaving high Cr content surface would be good. Any suggestions would be greatly appreciated.

Alexander Manasson
Engineer - Springfield, New Jersey
November 11, 2010

I can't comment on the specifics of Cp2Mg, but a good iron-free, high-chrome surface is what you'll get if you passivate per industry standards such as ASTM A967. Let us know if we can help.

Ray Kremer
Stellar Solutions, Inc.

McHenry, Illinois

November 19, 2010

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