EP0322932A2
Expired / Lapsed
EP
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A fiber filled reticulated ceramic, used as a lining in a furnace
Assignee: Hi-Tech Ceramics Inc
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Filing: 1988-08-01
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Granted: —
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Expires: 2008-08-01
Abstract
Abstract A construct comprises a reticulated ceramic consisting of interconnected webs defining a plurality of interconnected pores and a plurality of fibers distributed within substantially all of said pores in a selected volume of said reticulated ceramic. The reticulated ceramic and the fibers are selected from the group consisting of oxide ceramics, carbides, nitrides, silicides, borides, carbon and mixtures thereof. The fibers may be deposited over substantially the entire surface of substantially all of said pores or the ceramic fibers may form a batt filling at least a portion of said pores. A method of preparing the fiber filled reticulated ceramic is also disclosed.
Inventors
- 👤 Jeffrey Rogers Morris
- 👤 William Edwin Meinking
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 08:44
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; B; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2068; B01D39/2093; C04B41/45; C04B41/4596; C04B41/52; C04B41/80; C04B41/81; C04B41/89
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
36 words
A construct comprising a reticulated ceramic consisting of interconnected webs defining a plurality of interconnected pores and a plurality of fibers distributed within substantially all of said pores in a selected volume of said reticulated ceramic.
Claim 2
Dependent Claim
36 words
A construct comprising a reticulated ceramic consisting of interconnected webs defining a plurality of interconnected pores and a plurality of fibers distributed within substantially all of said pores in a selected volume of said reticulated ceramic.
Claim 3
Dependent Claim
30 words
A construct according to claim 1 wherein the reticulated ceramic and the fibers are selected from the group consisting of oxide ceramics, carbides, nitrides, silicides, borides, carbon and mixtures thereof.
Claim 4
Dependent Claim
24 words
A construct according to claim 1 or 2, wherein the fibres are deposited over substantially the entire surface of substantially all of said pores.
Claim 5
Dependent Claim
24 words
A construct according to any of the preceding claims wherein the ceramic fibers form a batt filling at least a portion of said pores.
Claim 6
Dependent Claim
32 words
A construct according to claim 4 wherein the ceramic fibers form a batt filling pores adjacent at least one surface of the construct but do not fill all pores of the construct.
Claim 7
Dependent Claim
21 words
A construct according to any of the preceding claims wherein the fibers are at least partially coated with equiaxed ceramic particles.
Claim 8
Dependent Claim
21 words
A construct according to any of the preceding claims wherein the fibers are ceramically bonded to the surface of the pores.
Claim 9
Dependent Claim
18 words
A construct according to any of the preceding claims wherein the fibers are ceramically bonded to each other.
Claim 10
Dependent Claim
55 words
A construct according to any of the preceding claims wherein the bulk density of the reticulated ceramic is between 3 and 50 percent of theoretical density, the bulk density of the fiber filled pores is between 1 and 50 percent, and the apparent density of the fiber filled pores is between 0.05 and 2.25 g/cm³.
Claim 11
Dependent Claim
38 words
A construct according to any of the preceding claims wherein the average effective diameter of the pores in the reticulated ceramic ranges from 10 - 25µm, the average length of the fibers ranges from 250µm - 10 cm.
Claim 12
Dependent Claim
26 words
A construct according to claim 3 wherein the fibers have an average length of less than 20 percent of the average effective diameter of the pores.
Claim 13
Dependent Claim
26 words
A construct according to claim 4 wherein the fibers have an average length of at least 80 percent of the effective average diameter of the pores.
Claim 14
Dependent Claim
69 words
A construct according to any of the preceding claims wherein the reticulated ceramic is an oxide selected from the group lithium-alumino-silicates, alumino-silicates, aluminas, partially stabilized zirconias, fully stabilized zirconias, cordierites, mullites, and mixtures thereof, e.g. SiC, Si₂N₄, B₄C, AlN and sialons, and wherein the fibers are selected from the group consisting of glass fibers, alumino-silicate fibers, high alumina fibers, zirconia fibers, non-oxide ceramic fibers, carbon fibers and mixtures thereof.
Claim 15
Dependent Claim
36 words
A construct according to claims 1 or 2 wherein the fiber filled pores are impregnated with a solidifying liquid such as an organic resin or thermosetting polymer, e.g. a chemically setting mortar, or a molten metal.
Claim 16
Independent Claim
40 words
A method of forming a fiber filled reticulated ceramic comprising the steps of: a) forming a reticulated ceramic, b) forming a slurry of fibers, and c) flushing the slurry into the reticulated ceramic until the desired fiber loading is achieved.
Claim 17
Independent Claim
40 words
A method of forming a fiber filled reticulated ceramic comprising the steps of: a) forming a reticulated ceramic, b) forming a slurry of fibers, and c) flushing the slurry into the reticulated ceramic until the desired fiber loading is achieved.
Claim 18
Dependent Claim
23 words
The method according to claim 15 in which the slurry of fibers comprises 1 to 80 volume percent fibers dispersed in a liquid.
Claim 19
Dependent Claim
39 words
A method according to claim 15 wherein,prior to the step for flushing, a permeable layer is placed against one side of the reticulated ceramic such that the permeable layer strains the fibers from the slurry during the flushing step.
Claim 20
Dependent Claim
18 words
A method according to claim 17 wherein a vacuum is pulled upon the bottom of the permeable layer.
Claim 21
Independent Claim
19 words
A method according to any of the claims 15-18 wherein the reticulated ceramic is vibrated during the flushing step.
Claim 22
Independent Claim
20 words
A method according to any of the claims 15-19 wherein the slurry is flushed into the reticulated ceramic under pressure.
Claim 23
Independent Claim
25 words
A method according to any of the claims 15-20 wherein a construct having the characteristics as defined in any of the claims 1-14 is formed.
References Cited (Backward Citations)
No citation records indexed.
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