Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
(OP)
Hi guys. I wonder is it possible to use endothermic gas instead of hydrogen atmosphere for 80Ni soft magnetic materials heat treatment? Any disandvantages?





RE: Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
If it is hydrogen rich and very low dew point then it should work.
Most endo gas isn't dry enough for this application.
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Plymouth Tube
RE: Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
Btw, what are the disadvantages of the higher dew point than recommended (-50c)?
RE: Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
At your dew point oxidation is a sure thing. You are OK at annealing temp, but as you cool the metal will oxidize.
You might get away with -40, but nothing higher.
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Plymouth Tube
RE: Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
RE: Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
Forming a thin oxide layer is one way of decreasing eddy current, but should be in a controllable manner.
RE: Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
RE: Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment
RE: Endothermic gas atmosphere and 80Ni soft magnetic materials heat treatment