STOP!!!
The tantalum foil should not be used for high temperature in air. Above a few
hundred degrees Celsius it will oxidize rapidly and disintegrate.
I accidently learned this the hard way many years ago!
Either use an inert atmosphere or vacuum. Or use a different heater ribbon,
suitable
way to use
them is with a high vacuum system (turbo pump), and with relatively inert
samples.
Ultimately you are better off getting a Pt strip instead.
Jools
From: rietveld_l-requ...@ill.fr On Behalf Of
Mibeck, Blaise
Sent: torsdag 25. juli 2019 16.27
To: Payzant, Andrew
Cc: rietveld_l@ill.
file/e-andrew-payzant
From: Timothy Hyde
Date: Friday, July 26, 2019 at 6:07 AM
To: "Mibeck, Blaise" , Julian Richard Tolchard
, "Payzant, Andrew"
Cc: Rietveld list
Subject: RE: [EXTERNAL] Mounting Sample on High Temperature XRD Ribbon Heater
Blaise,
Andrew, below corre
andrew-payzant
From: "Mibeck, Blaise"
Date: Thursday, July 25, 2019 at 4:23 PM
To: Julian Richard Tolchard , "Payzant,
Andrew"
Cc: Rietveld list
Subject: Re: [EXTERNAL] Mounting Sample on High Temperature XRD Ribbon Heater
Been a long day. I did have a new platinum ribbon
Habib,
Reinhard has nailed it – no need for a larger discussion as these artifacts are
well understood. The late William Parrish published a paper describing these
sort of artifacts ages ago (maybe 1950’s?).
Andrew
---
Dr. E.
POWDER DIFFRACTION ?
https://www.cambridge.org/core/journals/powder-diffraction
---
Dr. E. Andrew Payzant, FASM
Distinguished R Staff Member
Leader, Materials Engineering Group
Neutron Scattering Division
Mailing Address:
Oak
