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US 5,514,349 AGranted
A system for making nonstructured materials
AssigneeNanophase Technologies Corporation
InventorsJohn C. Parker, Mohammed N. Ali, Byron B. Lympany
Life of this patent
Estimating the term…
Abstract
A method and system for synthesizing nanocrystalline material. A system includes a chamber, a nonconsumable cathode shielded against chemical reaction by a working gas not including an oxidizing gas, but including an inert gas, a consumable anode vaporizable by an arc formed between the cathode and the anode, and a nozzle for injecting at least one of a quench and reaction gas in the boundaries of the arc.
Claims30
A system for synthesizing nanocrystalline material, comprising:
- a chamber for containing means for generating a nanocrystalline aerosol selected from the group consisting of a metal, a semiconductor and a ceramic;
- a nonconsumable cathode disposed within said chamber and having means for providing a working gas flow for shielding said cathode against chemical reaction and further creates an elongated ionized arc;
- a consumable anode disposed within said chamber and inclined at an angle relative to said cathode, material being vaporizable from said anode by said elongated ionized arc;
- means for injecting at least one of a quench and a reaction gas within at least one point of the boundary defining said elongated ionized arc and said means for injecting further for establishing an arc truncation point;
- means for providing power to said anode and said cathode allowing formation of a reaction zone and further for generating a nanocrystalline aerosol containing nanocrystals;
- means for injecting a cooling gas stream into said nanocrystalline aerosol at a point downstream beyond said arc truncation point;
- and
- means to collect the nanocrystalline material.
5 more elements
A system for synthesizing nanocrystalline material, comprising:
- a chamber for containing means for generating a nanocrystalline aerosol;
- a cathode disposed within said chamber and having means for providing a working gas flow for shielding said cathode against chemical reaction and further creates an elongated ionized arc;
- an anode disposed within said chamber and inclined at an angle relative to said cathode, material being vaporizable from said anode by said elongated ionized arc;
- means for injecting at least one of a quench and a reaction gas within at least one point of the boundary deeming said elongated ionized arc and said means for injecting further for establishing an arc truncation point;
- means for providing power to said anode and said cathode allowing formation of a reaction zone and further for generating a nanocrystalline aerosol containing nanocrystals;
- means for injecting a cooling gas stream into said nanocrystalline aerosol at a point downstream beyond said arc truncation point;
- and
- means to collect the nanocrystalline material.
5 more elements
A system for synthesizing nanocrystalline material, comprising;
- a chamber within which a nanocrystalline aerosol can be generated;
- a cathode disposed within said chamber;
- means for providing a working gas flow for generating an elongated ionized arc extending from said cathode;
- an anode disposed within said chamber and positioned near said cathode with material from said anode being vaporized by said elongated ionized arc;
- means for injecting at least one of a quench and a reaction gas along at least one point of said elongated ionized arc, said injecting means also for adjusting distance of said injecting means relative to said anode and for changing particle size of the nanocrystalline material;
- means for proving power to said anode and said cathode, allowing formation of a reaction zone and said means further for generating a nanocrystalline aerosol from said material vaporized from said anode;
- and
- means for collecting the nanocrystalline material.
5 more elements
Dependencies are inferred from the claim text.