iandol on fri 21 sep 01
Dear Steve Mills and Mike Bailey,
Being about reduction firings, no doubt the popular chemistry may be =
reiterated without criticism. So I have only two suggestions.
Perhaps it is time for research relating Oxyprobe readings to the =
quantity or partial pressure of oxygen present in a kiln's atmosphere to =
be presented so that we may make better use of the Ellingham Diagram.=20
The second point which needs to be opened up follows on from the =
comments of Kingery et al relating to the meaning of the term =
"Reduction" and the alternative ways we can cause this process to =
happen. We need some way of assessing carbon and carbon monoxide if we =
are to invoke those substances as the cause of, rather than accessories =
to reduction processes.
If these issues are not addressed I feel (no offence meant by this to =
someone brave enough to author a new volume on such a well trod topic) =
that this will just be another collection of "show and tell statements".
Best regards,
Ivor Lewis. Redhill, South Australia=20
Steve Mills on sun 23 sep 01
Dear Ivor,
Thank you for taking the lid off another topic which, if I am any Judge,
should run and run, and with a bit of luck provide Mike with the bones
of ANOTHER chapter (if not a whole book) on a subject with as many
opinions as there are grains of sand (or glazes) in this world. :-)
Steve
Rubbing his hands with glee in:
Bath
UK
In message , iandol writes
>Dear Steve Mills and Mike Bailey,
>
>Being about reduction firings, no doubt the popular chemistry may be =3D
>reiterated without criticism. So I have only two suggestions.
>
>Perhaps it is time for research relating Oxyprobe readings to the =3D
>quantity or partial pressure of oxygen present in a kiln's atmosphere to =
>=3D
>be presented so that we may make better use of the Ellingham Diagram.=3D2=
>0
>
>The second point which needs to be opened up follows on from the =3D
>comments of Kingery et al relating to the meaning of the term =3D
>"Reduction" and the alternative ways we can cause this process to =3D
>happen. We need some way of assessing carbon and carbon monoxide if we =3D
>are to invoke those substances as the cause of, rather than accessories =3D
>to reduction processes.
>
>If these issues are not addressed I feel (no offence meant by this to =3D
>someone brave enough to author a new volume on such a well trod topic) =3D
>that this will just be another collection of "show and tell statements".
>
>Best regards,
>
>Ivor Lewis. Redhill, South Australia=3D20
--
Steve Mills
Bath
UK
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