EP0194811A2
Expired / Lapsed
EP
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Reinforced ceramic cutting tools
Assignee: Advanced Composite Materials Corp
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Filing: 1986-03-06
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Granted: —
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Expires: 2006-03-06
Abstract
Abstract Tool comprises ceramic matrix reinforced by 2-40 vol.% ceramic whiskers; specific compsns. are alumina matrices contg. 2-40 or about 25 vol.% SiC whisker. Pref. compsns. are 20-35 and 2-12 vol.% whiskers which are pref. Al2 O3, AlN, BeO, B4C, graphite or Si3N4 or esp. SiC or mixts. thereof. Al2O3 matrix can pref. include s mall amts. of ZrO2, Y2O3, HfO2, MgO, Si3N4 or TiC. Matrix can pref. be Si3N4. -
Inventors
- 👤 James F. Rhodes
- 👤 Ronald L. Beatty
- 👤 Chester J. Dziedzic
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 20:35
CPC Classifications
B; B23; B23B; B23B27/00; C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; B23B27/14; B23B27/148; C04B35/01; C04B35/10; C04B35/111; C04B35/117; C04B35/119; C04B35/515; C04B35/58; C04B35/584; B23B2228/00; B23B2228/61; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3205; C04B2235/3206; C04B2235/3224; C04B2235/3225; C04B2235/38; C04B2235/3817; C04B2235/3839; C04B2235/3843; C04B2235/3852; C04B2235/3873; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5216; C04B2235/522; C04B2235/5224; C04B2235/524; C04B2235/5244; C04B2235/5248; C04B2235/5276; C04B2235/70; C04B2235/96
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
24 words
A cutting tool composed of a composite comprising a ceramic matrix having distributed therethrough reinforcement comprising ceramic whiskers in amounts of 2-40 volume percent
Claim 2
Dependent Claim
24 words
A cutting tool composed of a composite comprising a ceramic matrix having distributed therethrough reinforcement comprising ceramic whiskers in amounts of 2-40 volume percent
Claim 3
Dependent Claim
20 words
A cutting tool as in claim 1 wherein said composite comprises 65-80 volume percent matrix and 20-35 volume percent whiskers.
Claim 4
Dependent Claim
21 words
. A cutting tool as in claim 1 wherein said composite comprised 88-98 volume percent matrix and 2-12 volume percent whiskers.
Claim 5
Dependent Claim
17 words
A cutting tool as in any one of claims 1 to 3 wherein said matrix comprises alumina.
Claim 6
Dependent Claim
18 words
A cutting tool as in any one of claims 1 to 3 wherein said matrix comprises silicon nitride.
Claim 7
Dependent Claim
35 words
A cutting tool as in any one of claims 1 to 3 wherein said matrix comprises alumina also containing minor amounts of one or more of zirconia, yttria, hafnia, magnesia, silicon nitride and titanium carbide.
Claim 8
Dependent Claim
32 words
A cutting tool as in any one of claims 1 to 6 wherein said whiskers comprise silicon carbide, alumina, aluminum nitride, beryllia, boron carbide, graphite or silicon nitride whiskers or mixtures thereof.
Claim 9
Dependent Claim
19 words
A cutting tool as in any one of claims 1 to 6 wherein said whiskers comprise silicon carbide whiskers.
Claim 10
Dependent Claim
16 words
A cutting tool comprising an alumina matrix having distributed therethrough 2-40 volume percent silicon carbide whiskers.
Claim 11
Dependent Claim
16 words
A cutting tool comprising an alumina matrix having distributed therethrough 2-40 volume percent silicon carbide whiskers.
Claim 12
Dependent Claim
17 words
A cutting tool comprising an alumina matrix having distributed therethrough about 25 volume percent silicon carbide whiskers.
Claim 13
Dependent Claim
17 words
A cutting tool comprising an alumina matrix having distributed therethrough about 25 volume percent silicon carbide whiskers.
References Cited (Backward Citations)
No citation records indexed.
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