Microwave purification process
A method of purifying a target powder having an oxygen content, the method comprising: flowing hydrogen gas through a microwave production chamber; applying microwaves to the hydrogen gas as the hydrogen gas flows through the microwave production chamber, thereby forming hydrogen radicals from the hydrogen gas; flowing the hydrogen radicals out of the microwave production chamber to the target powder disposed outside of the microwave production chamber; and applying the hydrogen radicals to the target powder, thereby removing a portion of the oxygen content from the powder. Preferably, the target powder is agitated as the hydrogen radicals are being applied.
1. A method of purifying a target powder having an oxygen content, the method comprising:
flowing hydrogen gas through a microwave production chamber;
applying microwaves to the hydrogen gas as the hydrogen gas flows through the microwave production chamber, thereby forming hydrogen radicals from the hydrogen gas;
flowing the hydrogen radicals out of the microwave production chamber to a target powder disposed outside of the microwave production chamber; and
applying the hydrogen radicals to the target powder, thereby removing a portion of the oxygen content from the target powder.
2. The method of claim 1 , wherein the target powder is housed within a target chamber and the step of applying the hydrogen radicals to the target powder further comprises the steps of:
flowing the hydrogen radicals into the target chamber; and
flowing the removed oxygen content out of the target chamber.
3. The method of claim 2 , wherein the step of applying the hydrogen radicals to the target powder further comprises the steps of:
agitating the target powder within the target chamber; and
flowing the hydrogen radicals through the target chamber as the target powder is being agitated.
4. The method of claim 3 , wherein the target chamber houses a rotatable paddle wheel having an interior circumference and a plurality of paddles disposed in an annular configuration along the interior circumference, the target powder disposed in the paddle wheel, the step of agitating the target powder comprising the step of rotating the paddle wheel.
5. The method of claim 4 , wherein the rotatable paddle wheel comprises a first end through which the hydrogen radicals enter and a second end through which the removed oxygen content exits, the rotatable paddle wheel extending from the first end to an expanding frusto-conical surface to a substantially cylindrical surface to a narrowing frusto-conical surface to the second end, the plurality of paddles being disposed on the substantially cylindrical surface.
6. The method of claim 4 , further comprising the step of heating the target chamber prior to the step of applying the hydrogen radicals to the target powder, wherein the target chamber is heated to a temperature equal to or less than 1200 degrees Fahrenheit.
7. The method of claim 1 , further comprising the step of heating the target powder prior to the step of applying the hydrogen radicals to the target powder.
8. The method of claim 1 , wherein the step of flowing the hydrogen gas comprises applying a vacuum force to the hydrogen gas and the step of flowing the hydrogen radicals comprises applying a vacuum force to the hydrogen radicals.
9. The method of claim 1 , the step of applying microwaves to the hydrogen gas results in the formation of hydrogen ions within the microwave production chamber, and the method further comprises the steps of:
flowing the hydrogen ions out of the microwave production chamber to the target powder disposed outside of the microwave production chamber; and
applying the hydrogen ions to the target powder.
10. The method of claim 1 , wherein the target powder is boron.
11. The method of claim 1 , wherein the target powder is ruthenium.