US5004714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of modifying ceramic composite bodies by a post-treatment process and articles produced thereby
Assignee: Lanxide Technology Co LP
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Filing: 1989-01-13
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Granted: 1991-04-02
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Expires: 2009-01-13
Abstract
Abstract The present invention relates to a novel method of manufacturing a composite body, such as a ZrB 2 --ZrC--Z composite body, by utilizing a post-treatment technique. Moreover, the invention relates to novel products made according to the process. The novel process modifies at least a portion of a composite body by exposing said body to a source of second metal.
Inventors
- 👤 Terry D. Claar
- 👤 William B. Johnson
- 👤 Robert A. Rapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:08
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/622; C04B35/653; C04B35/56; C04B35/5607; C04B35/5805; C04B35/58064; C04B35/58078; C04B35/64; C04B35/65; C04B35/652; C04B41/00; C04B41/45; C04B41/50; C04B41/5053; C04B41/51
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A method of producing a self-supporting ceramic composite body comprising producing a first composite body by: selecting a parent metal; heating said parent metal in a substantially inert atmosphere to a temperature sufficient to permit infiltration of molten parent metal into a mass comprising boron carbide and reacting molten parent metal with said boron carbide to form at least one boron-containing compound; continuing said infiltration reaction for a time sufficient to produce said first composite body comprising at least one parent metal boron-containing compound; and contacting said first composite body with a source of a second metal, thereby reacting at least a portion of said first composite body with said second metal to modify at least one property of the first composite body in at least a portion thereof, thereby producing said self-supporting body.
Claim 2
Independent Claim
134 words
A method of producing a self-supporting ceramic composite body comprising producing a first composite body by: selecting a parent metal; heating said parent metal in a substantially inert atmosphere to a temperature sufficient to permit infiltration of molten parent metal into a mass comprising boron carbide and reacting molten parent metal with said boron carbide to form at least one boron-containing compound; continuing said infiltration reaction for a time sufficient to produce said first composite body comprising at least one parent metal boron-containing compound; and contacting said first composite body with a source of a second metal, thereby reacting at least a portion of said first composite body with said second metal to modify at least one property of the first composite body in at least a portion thereof, thereby producing said self-supporting body.
Claim 3
Dependent Claim
30 words
A method according to claim 1, wherein said source of second metal comprises at least one material selected from the group consisting of an aluminum-containing material and a silicon-containing material.
Claim 4
Dependent Claim
20 words
A method according to claim 1 or 2, wherein said first composite body comprises ZrB 2 , ZrC and Zr.
Claim 5
Dependent Claim
28 words
A method according to claim 1, further comprising modifying said at least a portion of said first composite body by including a third metal with said second metal.
Claim 6
Dependent Claim
8 words
A product produced in accordance with claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-01 | 1994-10-01 | 1995-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-01 | 1998-10-01 | 1999-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-01 | 2002-10-01 | 2003-04-02 | $7700.00 | Window Closed / Lapsed |