I am a student attempting to manufacture thin film heaters by depositing
>platinum on a ceramic base. My heaters keep burning open when I apply
>even low voltages.
Measure the current. Are they failing by over-current, because the>platinum on a ceramic base. My heaters keep burning open when I apply
>even low voltages.
overall resistance is too high ? Or are they failing by localised
over-heating, which is probably caused by a small region of high
resistance. Identifying this might give you a hint as to their failure
mode.
And never test with a constant voltage source that isn't current
limited !