"Michael Pardee" <michaeltnull@cybertrails.com> wrote in
news:34udnW8YX54hhofZnZ2dnUVZ_vidnZ2d@sedona.net:

>
> "Grumpy AuContraire" <Grumpster@GrumpyvilleNOT.com> wrote in message
> news:4419AB76.117B2581@GrumpyvilleNOT.com...
>>
>> What about bead blasting? Of course, if the enclosed silicon is
>> kaput, you're SOL...
>>
>> JT
>>
>> (Who appreciates parts recycling (back to me) whenever possible)
>
> I think that would doom the sensor. My understanding is they are a
> porous zirconia cup with platinum film inside and outside to create
> the electrodes.
>


Yep.
http://www.dynacer.com/oxygen_sensors.htm

Bead blasting would destroy the outer platinum. And you'd then not have the
ability of electron flow, which requires both an anode and a cathode...

I wonder if pure heat and no chemicals would do it, if you could heat up
the element enough to burn off contaminants? Platinum melts at 3,200F.
Exhaust gas in the combustion chamber is about 2,300F.

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/