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US 5,665,326 AGranted
Method for synthesizing titanium nitride whiskers
AssigneeAdvanced Refractory Technologies, Inc.
InventorsArvind Goel, Vithal Revankar
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Abstract
A method for making titanium nitride whiskers comprising reacting titanium in the presence of nitrogen in a direct nitridation reaction, concurrently reacting titania in the presence of nitrogen in a carbothermal nitridation reaction, optionally in the presence of a transport species reaction under conditions necessary to make titanium nitride whiskers.
Claims23
A method for making titanium nitride whiskers comprising:
- in concurrent reactions in a reactant bed,
- reacting titanium in the presence of nitrogen in a direct nitridation reaction under conditions necessary to make titanium nitride whiskers;
- and
- reacting titania in the presence of nitrogen in a carbothermal nitridation reaction under conditions necessary to make titanium nitride whiskers.
1 more element
A method for making titanium nitride whiskers comprising:
- in concurrent reactions in a reactant bed,
- reacting titanium in the presence of nitrogen in a direct nitridation reaction under conditions necessary to make titanium nitride whiskers;
- and
- reacting titanium in the presence of nitrogen in a transport species reaction under conditions necessary to make titanium nitride whiskers.
1 more element
A method for making titanium nitride whiskers comprising:
- providing a reactant bed comprising a mixture of ammonium chloride, titanium, titania, and a metal-containing carbon catalyst;
- providing a flow of nitrogen gas to the reactant bed;
- providing a flow of hydrogen chloride gas to the reactant bed;
- and
- heating the reactant bed to conduct a first direct nitridation reaction concurrently with a second carbothermic nitridation reaction concurrently in the presence of a third transport species reaction, under conditions effective to produce titanium nitride whiskers.
2 more elements
A method for making titanium nitride whiskers comprising:
- providing a reactant bed having a density no greater than about 0.05 g/cc comprising a mixture of ammonium chloride, titanium, and a metal-containing carbon catalyst;
- providing a flow of nitrogen gas to the reactant bed;
- providing a flow of a hydrogen chloride gas to the reactant bed;
- and
- heating the reactant bed to conduct a direct nitridation reaction concurrently with a transport species reaction, under conditions effective to produce titanium nitride whiskers.
2 more elements
Dependencies are inferred from the claim text.