Thank you David. Will try to find that one.



Doug Pauls
Principal Materials and Process Engineer
Rockwell Collins

On Fri, Jun 15, 2018 at 2:49 PM, David Douthit <[log in to unmask]> wrote:

> Dougleas,
>
> I believe I found it: J. D. Sinclair -
> “Deposition of Airborne Sulfate , Nitrate , and Chloride Salts as It
> Relates to Corrosion of Electronics,” vol. 137, no. 4, pp. 1200-1206, 1990.
>
>
>
> Good luck!
>
>
>
> David A. Douthit
>
> > On Jun 15, 2018, at 12:31 PM, David Douthit <[log in to unmask]> wrote:
> >
> > Douglas,
> >
> > I am searching my records for some AT&T/BELL labs testing to simulate
> “dirty air/condensation”. These experiments determined that condensation
> would begin on average at 60% Rh and a film would form with a Ph factor
> between 2 and 4! I think this is called corrosion!
> >
> > If I find those methods (done in the 80’s) I will forward you the
> references!
> >
> > David A. Douthit
> >
> >
> >> On Jun 15, 2018, at 7:14 AM, Douglas Pauls <[log in to unmask]
> COM> wrote:
> >>
> >> Good morning all,
> >>
> >> I am about to turn one of my co-ops loose on a project.  Years back, I
> >> recall a test method, I think from a Mil-STD, that involved exposing a
> >> circuit to "branch water".  This was water with some form of
> electrolyte in
> >> it to represent condensed water from a dirty atmosphere.  Is anyone
> >> familiar with the test method I am thinking of?  Or something similar?
> >>
> >>
> >> Doug Pauls
> >> Principal Materials and Process Engineer
> >> Rockwell Collins
> >>
> >
>