Method for pyrolyzing preceramic polymer material using electromagnetic radiation

Patent metadata

Field	Value
Publication number	US-2017369380-A1
Application number	US-201715684095-A
Country	US
Kind code	A1
Filing date	Aug 23, 2017
Priority date	Oct 14, 2013
Publication date	Dec 28, 2017
Grant date	—

Abstract

Disclosed is a method for fabricating a ceramic material from a preceramic polymer material. The method includes providing a preceramic polymer material that has a preceramic polymer and an electromagnetic radiation-responsive component. The electromagnetic radiation-responsive component is selected from cobalt, titanium, zirconium, hafnium, tantalum, tungsten, rhenium, and combinations thereof. An electromagnetic radiation is applied to the preceramic polymer material. The electromagnetic radiation interacts with the electromagnetic radiation-responsive component to generate heat that converts the preceramic polymer to a ceramic material.

First claim

What is claimed is:

1 . A method for fabricating a ceramic material from a preceramic polymer material, the method comprising:
providing a preceramic polymer material that includes a preceramic polymer and an electromagnetic radiation-responsive component, the electromagnetic radiation-responsive component includes a metal selected from the group consisting of cobalt, titanium, zirconium, hafnium, tantalum, tungsten, rhenium, and combinations thereof; and applying electromagnetic radiation to the preceramic polymer material, the electromagnetic radiation interacting with the electromagnetic radiation-responsive component to generate heat that converts the preceramic polymer to a ceramic phase.

2 . The method as recited in claim 1 , wherein the metal is the cobalt.

3 . The method as recited in claim 1 , wherein the electromagnetic radiation-responsive component further includes at least one of a boron-containing compound, nitrides of aluminum, nitrides of titanium, nitrides of zirconium, nitrides of hafnium, nitrides of tantalum, nitrides of tungsten, nitrides of rhenium, carbides of aluminum, carbides of titanium, carbides of zirconium, carbides of hafnium, carbides of tantalum, carbides of tungsten, carbides of rhenium and combinations thereof.

4 . The method as recited in claim 1 , wherein the electromagnetic radiation-responsive component is particulate dispersed through the preceramic polymer.

5 . The method as recited in claim 1 , wherein the preceramic polymer includes, by volume, 0.1%-10% of the electromagnetic radiation-responsive component.

6 . The method as recited in claim 5 , wherein the metal is selected from the group consisting of cobalt, zirconium, hafnium, tantalum, rhenium, and combinations thereof.

7 . The method as recited in claim 5 , wherein the metal is selected from the group consisting of cobalt, hafnium, tantalum, rhenium, and combinations thereof.

8 . The method as recited in claim 7 , wherein the electromagnetic radiation-responsive component further includes a carbide.

9 . The method as recited in claim 7 , wherein the preceramic polymer includes, by volume, 0.1%-1% of the electromagnetic radiation-responsive component.

10 . The method as recited in claim 1 , wherein the electromagnetic radiation is microwave radiation.

11 . The method as recited in claim 1 , wherein the metal is selected from the group consisting of cobalt, zirconium, hafnium, tantalum, rhenium, and combinations thereof.

12 . The method as recited in claim 1 , wherein the metal is selected from the group consisting of cobalt, hafnium, tantalum, rhenium, and combinations thereof.

13 . A method for fabricating a ceramic material from a preceramic polymer material, the method comprising:
providing a preform that includes a fiber structure and preceramic polymer material within the fiber structure, the preceramic polymer material includes a preceramic polymer and an electromagnetic radiation-responsive component, the electromagnetic radiation-responsive component is a metal selected from the group consisting of cobalt, titanium, zirconium, hafnium, tantalum, tungsten, rhenium, and combinations thereof; and applying electromagnetic radiation to the preform, the electromagnetic radiation interacting with the electromagnetic radiation-responsive component to generate heat that converts the preceramic polymer to a ceramic phase.

14 . The method as recited in claim 13 , wherein the metal is selected from the group consisting of cobalt, zirconium, hafnium, tantalum, rhenium, and combinations thereof.

15 . The method as recited in claim 13 , wherein the metal is selected from the group consisting of cobalt, hafnium, tantalum, rhenium, and combinations thereof.

16 . The method as recited in claim 13 , wherein the electromagnetic radiation-responsive component is the cobalt.

17 . The method as recited in claim 13 , wherein the preceramic polymer includes, by volume, 0.1%-10% of the electromagnetic radiation-responsive component.

18 . The method as recited in claim 13 , wherein the electromagnetic radiation-responsive component further includes at least one of nitrides of aluminum, nitrides of titanium, nitrides of zirconium, nitrides of hafnium, nitrides of tantalum, nitrides of tungsten, nitrides of rhenium, carbides of aluminum, carbides of titanium, carbides of zirconium, carbides of hafnium, carbides of tantalum, carbides of tungsten, carbides of rhenium and combinations thereof.

19 . A ceramic material comprising:
a body formed of a ceramic phase, the ceramic phase having dispersed there through an electromagnetic radiation-responsive component that is a metal selected from the group consisting of cobalt, titanium, zirconium, hafnium, tantalum, tungsten, rhenium, and combinations thereof.

20 . The ceramic material as recited in claim 19 , wherein the ceramic phase includes, by volume, 0.1%-10% of the electromagnetic radiation-responsive component, and the metal is selected from the group consisting of cobalt, zirconium, hafnium, tantalum, rhenium, and combinations thereof.

Assignees

• United Technologies Corp

Inventors

• Smyth Imelda P
• Berczik Douglas M

Classifications

• C04B35/5603

  with a well-defined oxygen content, e.g. oxycarbides · CPC title

• C04B2235/3821

  Boron carbides · CPC title

• C04B2235/405

  Iron group metals · CPC title

• C04B35/571 Primary

  obtained from {Si-containing} polymer precursors {or organosilicon monomers} · CPC title

• C04B35/76

  Fibres, filaments, whiskers, platelets, or the like · CPC title