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US 9,305,677 B2Granted
Boron nitride converted carbon fiber
AssigneeThe Regents of the University of California
InventorsMichael Rousseas, William Mickelson, Alexander K. Zettl
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Abstract
This disclosure provides systems, methods, and apparatus related to boron nitride converted carbon fiber. In one aspect, a method may include the operations of providing boron oxide and carbon fiber, heating the boron oxide to melt the boron oxide and heating the carbon fiber, mixing a nitrogen-containing gas with boron oxide vapor from molten boron oxide, and converting at least a portion of the carbon fiber to boron nitride.
Claims20
A method comprising:
- (a) providing boron oxide and carbon fiber, the carbon fiber having a circular cross-section;
- (b) heating the boron oxide to melt the boron oxide and heating the carbon fiber;
- (c) mixing a nitrogen-containing gas with boron oxide vapor from molten boron oxide;
- and
- (d) converting a portion of the carbon fiber proximate a perimeter of the circular cross-section of the carbon fiber to boron nitride, the boron nitride having a thickness of about 10 nanometers to 1.5 microns.
2 more elements
A structure
- comprising:
- a carbon fiber core;
- and
- a boron nitride layer surrounding the carbon fiber core, the boron nitride layer having the same surface morphology as the carbon fiber core, the boron nitride layer having a thickness of about 10 nanometers to 1.5 microns.
1 more element
A
- structure comprising:
- a
- carbon fiber core;
- and
- a boron nitride layer surrounding the carbon fiber core, the structure having a color selected from a group consisting of red, green, blue, and variations thereof, the color being determined by a thickness of the boron nitride layer.
2 more elements
Dependencies are inferred from the claim text.