Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
58 words
A method for introducing a controlled level of oxygen into agglomerated molybdenum metal powder, said method comprising a) contacting said powder with a relatively dilute solution containing a sufficient amount of an oxidizing agent for a sufficient time to increase the oxygen content of said powder; and b) removing the resulting partially oxidized powder from the resulting solution.
Claim 2
Independent Claim
58 words
A method for introducing a controlled level of oxygen into agglomerated molybdenum metal powder, said method comprising a) contacting said powder with a relatively dilute solution containing a sufficient amount of an oxidizing agent for a sufficient time to increase the oxygen content of said powder; and b) removing the resulting partially oxidized powder from the resulting solution.
Claim 3
Dependent Claim
49 words
A method of claim 1 wherein said powder is contacted with a solution consisting essentially of in percent by weight from about 1% to about 10% of said oxidizing agent with from about 2 moles to about 5 moles of said oxidizing agent being present per mole of molybdenum.
Claim 4
Dependent Claim
12 words
A method of claim 2 wherein said oxidizing agent is hydrogen peroxide.
Claim 5
Independent Claim
55 words
A method for introducing a controlled level of oxygen into agglomerated molybdenum metal powder, said method comprising heating said molybdenum powder at a sufficient temperature for a sufficient time in the presence of water vapor, and a non-oxidizing atmosphere with the amount of said non-oxidizing temperature being controlled to produce a partially oxidized molybdenum powder.
Claim 6
Independent Claim
55 words
A method for introducing a controlled level of oxygen into agglomerated molybdenum metal powder, said method comprising heating said molybdenum powder at a sufficient temperature for a sufficient time in the presence of water vapor, and a non-oxidizing atmosphere with the amount of said non-oxidizing temperature being controlled to produce a partially oxidized molybdenum powder.
Claim 7
Dependent Claim
15 words
A method of claim 4 wherein the temperature is from about 700°C to about 900°C.
Claim 8
Dependent Claim
11 words
A method of claim 5 wherein said non-oxidizing atmosphere is nitrogen.
Claim 9
Dependent Claim
24 words
A method of claim 6 wherein the oxygen content of said partially oxidized molybdenum powder is from about 3% to about 15% by weight.
Claim 10
Independent Claim
92 words
A method for introducing a controlled level of oxygen into agglomerated molybdenum plasma spray powder, said method comprising: a) forming a relatively uniform mixture of agglomerated powders consisting essentially of molybdenum, and one or more oxygen containing compounds of molybdenum wherein said mixture has an oxygen content of greater than about 10% by weight; and b) reducing said mixture at a sufficient temperature for a sufficient time to remove a portion of the oxygen therefrom and form a molybdenum powder having an oxygen content of no greater than about 10% by weight.
Claim 11
Independent Claim
92 words
A method for introducing a controlled level of oxygen into agglomerated molybdenum plasma spray powder, said method comprising: a) forming a relatively uniform mixture of agglomerated powders consisting essentially of molybdenum, and one or more oxygen containing compounds of molybdenum wherein said mixture has an oxygen content of greater than about 10% by weight; and b) reducing said mixture at a sufficient temperature for a sufficient time to remove a portion of the oxygen therefrom and form a molybdenum powder having an oxygen content of no greater than about 10% by weight.
Claim 12
Dependent Claim
17 words
A method of claim 8 wherein said mixture consists essentially of molybdenum, ammonium paramolybdate, and molybdenum oxides.
Claim 13
Dependent Claim
16 words
A method of claim 8 wherein the reducing temperature is from about 700°C to about 1000°C.
Claim 14
Dependent Claim
23 words
A method of claim 10 wherein the oxygen content of the reduced molybdenum powder is from about 7% to about 10% by weight.