US5348806A
Expired / Lapsed
US
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Cermet alloy and process for its production
Assignee: Proterial Ltd
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Filing: 1992-09-18
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Granted: 1994-09-20
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Expires: 2012-09-18
Abstract
Abstract A cermet alloy having a structure comprising a hard phase and a bonding phase, said hard phase comprising (1) at least one of MC, MN, and MCN, wherein M is at least one element selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W (2) at least one compound selected from (M,Mo)(B,C), M,Mo)(B,N) and (M,Mo)(B,CN) and (3) at least one Mo--Co--B compound; said bonding phase comprising Co. The cermet alloy has superior toughness and hardness, and can be worked by conventional sintering methods. The invention also includes a method for producing the cermet alloy.
Inventors
- 👤 Katsuhiko Kojo
- 👤 Akibumi Negishi
- 👤 Masayuki Gonda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:03
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/14; C22C29/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
82 words
In a cermet alloy having a structure comprising a hard phase and a bonding phase, said hard phase comprising (1) at least one of MC, MN and MCN, where M is at least one element selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W and (2) at least one Mo--Co--B compound, said bonding phase comprising Co, wherein the cermet alloy is characterized in that said hard phase further comprises at least one compound selected from (M,Mo)(B,C), (M,Mo)(B,N) and (M,Mo)(B,CN).
Claim 2
Dependent Claim
82 words
In a cermet alloy having a structure comprising a hard phase and a bonding phase, said hard phase comprising (1) at least one of MC, MN and MCN, where M is at least one element selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W and (2) at least one Mo--Co--B compound, said bonding phase comprising Co, wherein the cermet alloy is characterized in that said hard phase further comprises at least one compound selected from (M,Mo)(B,C), (M,Mo)(B,N) and (M,Mo)(B,CN).
Claim 3
Dependent Claim
99 words
In a cermet alloy having a structure comprising a hard phase and a bonding phase, said hard phase comprising (1) at least one of MC, MN and MCN, where M is at least one element selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W and (2) a Mo--Co--B compound comprising CoMoB and CoMo 2 B 2 , said bonding phase comprising Co, wherein the cermet alloy is characterized in that said Mo--Co--B compound comprises core/shell particles having a core comprising CoMo 2 B 2 , said core having thereon at least a partial shell comprising CoMoB.
Claim 4
Dependent Claim
99 words
In a cermet alloy having a structure comprising a hard phase and a bonding phase, said hard phase comprising (1) at least one of MC, MN and MCN, where M is at least one element selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W and (2) a Mo--Co--B compound comprising CoMoB and CoMo 2 B 2 , said bonding phase comprising Co, wherein the cermet alloy is characterized in that said Mo--Co--B compound comprises core/shell particles having a core comprising CoMo 2 B 2 , said core having thereon at least a partial shell comprising CoMoB.
Claim 5
Dependent Claim
22 words
The cermet alloy according to claim 1, wherein the metallic Co content of said bonding phase is at most 7.0 wt %.
Claim 6
Dependent Claim
45 words
The cermet alloy according to claim 1, wherein said hard phase comprises core/shell composite particles having a core comprising at least one of MC, MN, and MCN, said core having thereon at least a partial shell comprising at least one of (M,Mo)(B,C), (M,Mo)(B,N), and (M,Mo)(B,CN).
Claim 7
Dependent Claim
24 words
The cermet alloy according to claim 1, wherein said at least one Mo--Co--B compound is selected from CoMoB and CoMo 2 B 2 .
Claim 8
Dependent Claim
44 words
The cermet alloy according to claim 5, wherein said hard phase comprises core/shell composite particles having a core comprising at least one of MC, MN, MCN, said core having thereon at least a partial shell comprising at least one of (M,Mo)(B,C), (M,Mo)(B,N), and (M,Mo)(B,CN).
Claim 9
Dependent Claim
34 words
The cermet alloy according to claim 5, wherein said Mo--Co--B compound comprises core/shell particles having a core comprising CoMo 2 B 2 , said core having thereon at least a partial shell comprising CoMoB.
Claim 10
Dependent Claim
34 words
The cermet alloy according to claim 6, wherein said Mo--Co--B compound comprises core/shell particles having a core comprising CoMo 2 B 2 , said core having thereon at least a partial shell comprising CoMoB.
Claim 11
Dependent Claim
27 words
The cermet alloy according to claim 1, wherein M represents Ti and said hard phase comprises (1) TiC, (2) (Ti,Mo)(B,C) and (3) at least one Mo--Co--B compound.
Claim 12
Dependent Claim
30 words
The cermet alloy according to claim 9, wherein said hard phase comprises core/shell particles having a core comprising TiC, said core having thereon at least a partial shell comprising (Ti,Mo)(B,C).
Claim 13
Dependent Claim
31 words
The cermet alloy according to claim 2, wherein M represents Ti and said hard phase comprises (1) TiC and (2) a Mo--Co--B compound comprising CoMoB and CoMo 2 B 2 .
Claim 14
Dependent Claim
24 words
The cermet alloy according to claim 9, wherein said at least one Mo--Co--B compound is selected from CoMoB and CoMo 2 B 2 .
Claim 15
Dependent Claim
30 words
The cermet alloy according to claim 12, wherein said hard phase comprises core/shell particles having a core comprising TiC, said core having thereon at least a partial shell comprising (Ti,Mo)(B,C).
Claim 16
Dependent Claim
34 words
The cermet alloy according to claim 12, wherein said Mo--Co--B compound comprises core/shell particles having a core comprising CoMo 2 B 2 , said core having thereon at least a partial shell comprising CoMoB.
Claim 17
Dependent Claim
34 words
The cermet alloy according to claim 13, wherein said Mo--Co--B compound comprises core/shell particles having a core comprising CoMo 2 B 2 , said core having thereon at least a partial shell comprising CoMoB.
Claim 18
Dependent Claim
25 words
The cermet alloy according to claim 1, wherein M represents W and said hard phase comprises (1) WC and (2) at least one Mo--Co--B compound.
Claim 19
Dependent Claim
26 words
The cermet alloy according to claim 16, wherein said at least one Mo--Co--B compound comprises (1) CoMoB or (2) CoMoB and CoMo 2 B 2 .
Claim 20
Dependent Claim
18 words
The cermet alloy according to claim 1, wherein said Mo--Co--B compound is partially replaced with a W--Co--B compound.
References Cited (Backward Citations)
US2776468A
Cited
GB866119A
Cited
FR2034038A5
Cited
US3752655A
Cited
US4533389A
Cited
FR2514788A1
Cited
GB2109409A
Cited
JPS60131867A
Cited
EP0349740A2
Cited
US5022919A
Cited
US5149595A
Cited
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