Differential Scanning Calorimetry (DSC)
Differential Scanning Calorimetry (DSC)
(OP)
Hi,
I'm trying to use DSC to study phase transformation in a steel. I'm using an STA 449 F3 Jupiter equipment from Netzsch. The problem is that my equipment doesn't have vacuum and I saw some oxidation at the sample at the end of test. I'm using high purity argon (99.999%) as purge at 50 ml/min and I'd already tried to purge the chamber using argon for 1 hour before start test. My sample is 6 mm diameter and 0.2 mm tickness (between 10 and 20 mg as somebody told me and I saw in some books).
My question is: Does anybody knows how can I solve this oxidation problem in my sample without using vacuum?
Thanks.
I'm trying to use DSC to study phase transformation in a steel. I'm using an STA 449 F3 Jupiter equipment from Netzsch. The problem is that my equipment doesn't have vacuum and I saw some oxidation at the sample at the end of test. I'm using high purity argon (99.999%) as purge at 50 ml/min and I'd already tried to purge the chamber using argon for 1 hour before start test. My sample is 6 mm diameter and 0.2 mm tickness (between 10 and 20 mg as somebody told me and I saw in some books).
My question is: Does anybody knows how can I solve this oxidation problem in my sample without using vacuum?
Thanks.





RE: Differential Scanning Calorimetry (DSC)
2. Store samples in a container with descant to assure that they are very dry.
3. cycle the chamber empty before a run if you haven't used it for a while.
4. Install a dew point meter on the vent line, purge until you reach -40.
This is all in the details.
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P.E. Metallurgy, Plymouth Tube
RE: Differential Scanning Calorimetry (DSC)