Formation of boron carbide-boron nitride carbon compositions

Patent metadata

Field	Value
Publication number	US-9957199-B2
Application number	US-201715429767-A
Country	US
Kind code	B2
Filing date	Feb 10, 2017
Priority date	Jan 26, 2012
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

A composition having nanoparticles of a boron carbide and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising boron and an organic component. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining boron and an organic compound having a char yield of at least 60% by weight, and heating to form boron carbide or boron nitride nanoparticles.

First claim

What is claimed is:

1. A composition comprising:
elemental boron; and
1,2,4,5-tetrakis(phenylethynyl)benzene, N,N′-(1,4-phenylenedimethylidyne)-bis-(3-ethynylaniline), dianilphthalonitrile, or resorcinol phthalonitrile.

2. The composition of claim 1 , wherein the composition comprises fibers, carbon fibers, ceramic fibers, or metal fibers.

3. The composition of claim 1 , wherein the composition comprises:
the elemental boron; and
1,2,4,5 tetrakis(phenylethynyl)benzene.

4. The composition of claim 1 , wherein the composition comprises:
the elemental boron; and
N,N′-(1,4-phenylenedimethylidyne)-bis-(3-ethynylaniline).

5. The composition of claim 1 , wherein the composition comprises:
the elemental boron; and
dianilphthalonitrile.

6. The composition of claim 1 , wherein the composition comprises:
the elemental boron; and
resorcinol phthalonitrile.

7. A composition comprising:
elemental boron; and
a thermoset made from 1,2,4,5-tetrakis(phenylethynyl)benzene.

8. A composition consisting of:
elemental boron; and
an organic compound that is not a polymer or prepolymer having a char yield of at least 60% by weight.

9. A composition consisting of:
elemental boron;
an organic compound that is not a polymer or prepolymer having a char yield of at least 60% by weight; and
fibers, carbon fibers, ceramic fibers, or metal fibers.

10. A composition comprising:
elemental boron; and
an organic compound having a char yield of at least 60% by weight; and consisting of carbon, hydrogen, and one or more of nitrogen and oxygen.

11. The composition of claim 10 , wherein the composition comprises fibers, carbon fibers, ceramic fibers, or metal fibers.

Assignees

• Us Navy

Inventors

• Keller Teddy M
• Saab Andrew P
• Laskoski Matthew

Classifications

• C04B35/522

  Graphite (C04B35/536 takes precedence) · CPC title

• C04B2235/95

  Products characterised by their size, e.g. microceramics · CPC title

• C04B2235/524

  Non-oxidic, e.g. borides, carbides, silicides or nitrides · CPC title

• C04B2235/3821

  Boron carbides · CPC title

• C04B35/64

  Burning or sintering processes (C04B33/32 takes precedence {; powder metallurgy B22F}) · CPC title