Refractory metal ceramics and methods of making thereof

Patent metadata

Field	Value
Publication number	US-2017107157-A1
Application number	US-201615207544-A
Country	US
Kind code	A1
Filing date	Jul 12, 2016
Priority date	Jan 26, 2012
Publication date	Apr 20, 2017
Grant date	—

Abstract

A composition having nanoparticles of a refractory-metal carbide or refractory-metal nitride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. 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 particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles with an organic compound having a char yield of at least 60% by weight to form a precursor mixture.

First claim

1 . A composition comprising:
a refractory-metal hydride; and an organic compound having a char yield of at least 60% by weight.

2 - 3 . (canceled)

4 . The composition of claim 1 , wherein the refractory-metal hydride is titanium hydride, zirconium hydride, hafnium hydride, tungsten hydride, niobium hydride, molybdenum hydride, chromium hydride, tantalum hydride, or vanadium hydride.

5 . The composition of claim 1 , wherein the organic compound:
contains only carbon and hydrogen; contains aromatic and acetylene groups; contains only carbon, hydrogen, and nitrogen or oxygen; contains no oxygen; or contains a heteroatom other than oxygen.

6 . The composition of claim 1 , wherein the organic compound is 1,2,4,5-tetrakis(phenylethynyl)benzene or a prepolymer thereof, N,N′-(1,4-phenylenedimethylidyne)-bis-(3-ethynylaniline), dianilphthalonitrile, or resorcinol phthalonitrile.

7 . (canceled)

8 . The composition of claim 1 , wherein the composition comprises a material selected from the group consisting of fibers, carbon fibers, ceramic fibers, and metal fibers.

9 . A composition comprising:
a refractory-metal hydride; and a thermoset made from an organic compound having a char yield of at least 60% by weight.

10 . The composition of claim 9 , wherein the refractory-metal hydride is titanium hydride, zirconium hydride, hafnium hydride, tungsten hydride, niobium hydride, molybdenum hydride, chromium hydride, tantalum hydride, or vanadium hydride.

11 . The composition of claim 9 , wherein the organic compound:
contains only carbon and hydrogen; contains aromatic and acetylene groups; contains only carbon, hydrogen, and nitrogen or oxygen; contains no oxygen; or contains a heteroatom other than oxygen.

12 . The composition of claim 9 , wherein the organic compound is 1,2,4,5-tetrakis(phenylethynyl)benzene or a prepolymer thereof, N,N′-(1,4-phenylenedimethylidyne)-bis-(3-ethynylaniline), dianilphthalonitrile, or resorcinol phthalonitrile.

13 . The composition of claim 9 , wherein the composition comprises a material selected from the group consisting of fibers, carbon fibers, ceramic fibers, and metal fibers.

14 . A composition comprising:
nanoparticles or particles of a refractory metal; and a thermoset made from an organic compound having a char yield of at least 60% by weight;
wherein the composition comprises at least 10% by weight of the nanoparticles or particles of the refractory metal.

15 . The composition of claim 14 , wherein the refractory metal is titanium.

16 . The composition of claim 14 , wherein the refractory metal is selected from the group consisting of a group IV-VI transition metal, zirconium, hafnium, tungsten, niobium, molybdenum, chromium, tantalum, and vanadium.

17 . The composition of claim 14 , wherein the organic compound:
contains only carbon and hydrogen; contains aromatic and acetylene groups; contains only carbon, hydrogen, and nitrogen or oxygen; contains no oxygen; or contains a heteroatom other than oxygen.

18 . The composition of claim 14 , wherein the organic compound is 1,2,4,5-tetrakis(phenylethynyl)benzene or a prepolymer thereof, N,N′-(1,4-phenylenedimethylidyne)-bis-(3-ethynylaniline), dianilphthalonitrile, or resorcinol phthalonitrile.

19 . The composition of claim 14 , wherein the composition comprises a material selected from the group consisting of fibers, carbon fibers, ceramic fibers, and metal fibers.

20 . The composition of claim 14 , wherein the composition comprises at least 70% by weight of the nanoparticles or particles of the refractory metal.

21 . A composition comprising:
nanoparticles or particles of a refractory metal; and an organic compound having a char yield of at least 60% by weight;
wherein the composition comprises at least 10% by weight of the nanoparticles or particles of the refractory metal.

22 . The composition of claim 21 , wherein the refractory metal is titanium.

23 . The composition of claim 21 , wherein the refractory metal is selected from the group consisting of a group IV-VI transition metal, zirconium, hafnium, tungsten, niobium, molybdenum, chromium, tantalum, and vanadium.

24 . The composition of claim 21 , wherein the metal component is selected from the group consisting of particles of the refractory metal, tungsten powder, and tantalum powder.

25 . The composition of claim 21 , wherein the organic compound:
contains only carbon and hydrogen; contains aromatic and acetylene groups; contains only carbon, hydrogen, and nitrogen or oxygen; contains no oxygen; or contains a heteroatom other than oxygen.

26 . The composition of claim 21 , wherein the organic compound is 1,2,4,5-tetrakis(phenylethynyl)benzene or a prepolymer thereof, N,N′-(1,4-phenylenedimethylidyne)-bis-(3-ethynylaniline), dianilphthalonitrile, or resorcinol phthalonitrile.

27 . The composition of claim 21 , wherein the composition comprises a material selected from the group consisting of fibers, carbon fibers, ceramic fibers, and metal fibers.

28 . The composition of claim 21 , wherein the composition comprises at least 70% by weight of the nanoparticles or particles of the refractory metal.

Assignees

• Us Gov Sec Navy

Inventors

• Keller Teddy M
• Saab Andrew P
• Laskoski Matthew
• Kolel-Veetil Manoj K

Classifications

• C04B2235/524

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

• C04B35/5607

  based on refractory metal carbides · CPC title

• C04B2235/48

  Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins · CPC title

• C04B2235/3886

  Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride · CPC title

• C04B35/5611

  based on titanium carbides · CPC title