Oxidation resistant induction devices
View Patent ↗Certain embodiments described herein are directed to induction devices comprising an oxidation resistant material. In certain examples, the induction device comprises a coil of wire that is produced from the oxidation resistant material. In some examples, the oxidation resistant induction device can be used to sustain an inductively coupled plasma in a torch.
1. An induction device comprising a helical induction coil comprising a plurality of coil turns coupled to each other, in which the helical induction coil comprises an oxidant resistant material and is configured to receive a torch to sustain a plasma in the torch by providing radio frequency energy to the torch, and in which the oxidation resistant material is present in an effective amount to sustain the plasma in the torch for at least ten hours without substantial oxidation of the helical induction coil.
2. The induction device of claim 1 , in which the oxidation resistant material comprises a non-coated material.
3. The induction device of claim 2 , in which the non-coated material comprises an aluminum alloy.
4. The induction device of claim 2 , in which the oxidation resistant material is selected to provide an overall electrode potential that is negative when the oxidation resistant material is reacted with oxygen.
5. The induction device of claim 1 , in which the induction coil consists essentially of an aluminum alloy.
6. The induction device of claim 1 , in which the oxidation resistant material is electrically coupled to a radio frequency source.
7. The induction device of claim 1 , in which the induction coil comprises at least 97% by weight of the oxidation resistant material.
8. An induction device comprising a helical induction coil comprising a plurality of coil turns coupled to each other, in which the helical induction coil comprises an oxidant resistant paramagnetic material and is configured to receive a torch to sustain a plasma in the torch by providing radio frequency energy to the torch, and in which the oxidation resistant paramagnetic material is present in an effective amount to sustain a plasma in the torch for at least ten hours without substantial oxidation of the helical induction coil.
9. The induction device of claim 8 , in which the oxidation resistant paramagnetic material comprises a non-coated material.
10. The induction device of claim 9 , in which the non-coated paramagnetic material comprises an aluminum alloy.
11. The induction device of claim 9 , in which the oxidation resistant paramagnetic material is selected to provide an overall electrode potential that is negative when the oxidation resistant paramagnetic material is reacted with oxygen.
12. The induction device of claim 8 , in which the induction coil consists essentially of an aluminum alloy.
13. The induction device of claim 8 , in which the induction coil consists essentially of platinum.
14. The induction device of claim 8 , in which the oxidation resistant paramagnetic material is electrically coupled to a radio frequency source.