Claims
- 1. A method of making an inorganic, carbon-coated substrate comprising the steps of:
- providing an inorganic substrate having pores extending from its outer surface and being formed of a material selected from the group consisting of ceramic and metallic materials;
- contacting said inorganic substrate with a coating and impregnating liquid consisting essentially or wholly of a curable carbon precursor liquid;
- treating said inorganic substrate under conditions effective to cure substantially said carbon precursor liquid;
- heating said inorganic substrate under conditions effective to convert said cured carbon precursor liquid to carbon; and
- treating said inorganic substrate under conditions effective to activate said carbon.
- 2. A method according to claim 1, wherein said inorganic substrate is formed from a material selected from the group consisting of alumino-silicates, silicate, titanate, zirconate, zirconia, zirconia-spinel, magnesium alumino-silicates, alumina, spinel, mullite, and cordierite.
- 3. A method according to claim 1, wherein said substrate is formed from a material selected from the group consisting of alloys including Fe, Ni, or Co.
- 4. A method according to claim 3, wherein said substrate is formed from an alloy consisting essentially of an iron group metal and aluminum.
- 5. A method according to claim 3, wherein said substrate is formed from an alloy consisting essentially of Fe, Al, and Cr.
- 6. A method according to claim 1, wherein said pores of said substrate create an interconnecting porosity within said substrate and said carbon coating is physically interlocked within said interconnecting porosity.
- 7. A method according to claim 6, wherein said inorganic substrate comprises cordierite.
- 8. A method according to claim 8, wherein said inorganic substrate is a honeycomb having a matrix of thin walls forming a multiplicity of open ended cells extending from a first end to a second end of said honeycomb.
- 9. A method according to claim 8, wherein said honeycomb has at least about 7.75 cells per square inch and said thin walls have a thickness in the range of about 0.05 to 1.27 millimeters.
- 10. A method according to claim 1, wherein said carbon precursor liquid is a thermosettable resin.
- 11. A method according to claim 10, wherein said carbon precursor liquid is a phenolic resin.
Parent Case Info
This is a division of application Ser. No. 08/011,385 filed on Jan. 29, 1993, now U.S. Pat. No. 5,451,444.
US Referenced Citations (27)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0448302 |
Mar 1991 |
EPX |
678915 |
Jun 1949 |
GBX |
1204353 |
Nov 1967 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
11385 |
Jan 1993 |
|