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JSPWiki v2.0.52


Difference between version 19 and version 1:
Lines 1-4 were replaced by lines 1-6
- ||Name||Description ||T-range||sample\\space\\diameter||Thread on stick
- |[FS]|small furnace |350...700 K |50|M6 female
- |[FT]|tantalum furnace|500...1400 K|50|M6 female
- |[FI]|ILL-type furnace|500...1800 K|40|M8 male
+ ||Name||Description ||T-range||sample\\space\\diameter||max.\\sample\\diameter||Thread on stick
+ |[FS]|small furnace |350...700 K |25*| |M6 female
+ |[FT]|tantalum furnace|375...1400 K|50|45|M6 female
+ |[FI]|ILL-type furnace|500...1800 K|40|35|M8 male
+ (*) 50 mm without radiation screen. However, in this mode very large temperature
+ gradients are expected.
At line 7 added 26 lines.
+
+ Working with high temperature furnace need great care:
+ * the choice of an adequate container:
+ ** does the sample react with the container? For metallic
+ samples, please check the phase diagrams of possible alloys
+ which might be created when the sample reacts with the container
+ or sample stick.
+ ** is the sample outgasing? It is preferred to work with
+ either an open container, or with a container connected
+ to a tube sample stick, allowing to control the atmosphere
+ from outside.
+ * the thermocouples have to be fixed well, and the proper
+ calibration curve has to be selected.
+ * __never use Cadmium or Indium in a furnace__, even not at relatively 'low' temperatures
+
+ The pictures below shows what might happen, if these rules are not
+ obeyed.
+
+ [FurnaceList/moltenSample.jpg]
+ \\Picture 1: Reaction of the sample with the container.
+
+ [FurnaceList/ftCd1.jpg]
+ [FurnaceList/ftCd2.jpg]
+ [FurnaceList/ftCd3.jpg]
+ [FurnaceList/ftCd4.jpg]
+ \\Picture 2,3,4,5: Molten and condensed Cadmium.

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