Patent US5149595A successfully refreshed from Google Patents.
US5149595A
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Cermet alloy and process for its production
Assignee: Moldino Tool Engineering Ltd
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Filing: 1991-09-11
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Granted: 1992-09-22
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Expires: 2011-09-11
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, Th, V, Nb, Ta, Pa, Cr, Mo, U and W and (2) at least one W-Co-B compound; said bonding phase comprising Co. The cermet has superior toughness and hardness, and can be worked by conventional sintering methods. The invention also includes a method for producing the cermet.
Inventors
- 👤 Katsuhiko Kojo
- 👤 Akibumi Negishi
- 👤 Hisaaki Ida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:06
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C22C29/10; C22C29/08; C22C29/14; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056; Y10T428/30
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
55 words
A cermet alloy having a structure comprising a hard phase and a bonding phase, said hard phase comprising (1) at least one of MC MCN, wherein M is at least one element selected Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W and (2) at least one W-Co-B compound; said bonding phase comprising Co.
Claim 2
Dependent Claim
55 words
A cermet alloy having a structure comprising a hard phase and a bonding phase, said hard phase comprising (1) at least one of MC MCN, wherein M is at least one element selected Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W and (2) at least one W-Co-B compound; said bonding phase comprising Co.
Claim 3
Dependent Claim
22 words
A cermet alloy according to claim 1, wherein the metallic Co content of said bonding phase is at most 7.0 wt %.
Claim 4
Dependent Claim
23 words
The cermet alloy according to claim 1, wherein said hard phase further comprises at least one compound selected from (M,W)(B,C), (M,W)(B,N) and (M,W)(B,CN).
Claim 5
Dependent Claim
45 words
The cermet alloy according to claim 3, 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,W)(B,C), (M,W)(B,N) and (M,W)(B,CN).
Claim 6
Dependent Claim
24 words
The cermet alloy according to claim 1, wherein said at least one W-Co-B compound is selected from CoWB and CoW 2 B 2 .
Claim 7
Dependent Claim
34 words
The cermet alloy according to claim 5, wherein said W-Co-B compound comprises core/shell particles having a core comprising CoW 2 B 2 , said core having thereon at least a partial shell comprising CoWB.
Claim 8
Dependent Claim
24 words
The cermet alloy according to claim 3, wherein said at least one W-Co-B compound is selected from CoWB and CoW 2 B 2 .
Claim 9
Dependent Claim
45 words
The cermet alloy according to claim 7, 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,W)(B,C), (M,W)(B,N) and (M,W)(B,CN).
Claim 10
Dependent Claim
34 words
The cermet alloy according to claim 7, wherein said W-Co-B compound comprises core/shell particles having a core comprising CoW 2 B 2 , said core having thereon at least a partial shell comprising CoWB.
Claim 11
Dependent Claim
34 words
The cermet alloy according to claim 8, wherein said W-Co-B compound comprises core/shell particles having a core comprising CoW 2 B 2 , said core having thereon at least a partial shell comprising CoWB.
Claim 12
Dependent Claim
27 words
The cermet alloy according to claim 3, wherein M represents Ti and said hard phase comprises (1) TiC, (2) (Ti,W)(B,C) and (3) at least one W-Co-B compound.
Claim 13
Dependent Claim
30 words
The cermet alloy according to claim 11, wherein said hard phase comprises core/shell particles having a core comprising TiC, said core having thereon at least a partial shell comprising (Ti,W)(B,C).
Claim 14
Dependent Claim
17 words
The cermet alloy according to claim 5, wherein M represents Ti and said hard phase comprises TiC.
Claim 15
Dependent Claim
34 words
The cermet alloy according to claim 13, wherein said W-Co-B compound comprises core/shell particles having a core comprising CoW 2 B 2 , said core having thereon at least a partial shell comprising CoWB.
Claim 16
Dependent Claim
24 words
The cermet alloy according to claim 11, wherein said at least one W-Co-B compound is selected from CoWB and CoW 2 B 2 .
Claim 17
Dependent Claim
30 words
The cermet alloy according to claim 15, wherein said hard phase comprises core/shell particles having a core comprising TiC, said core having thereon at least a partial shell comprising (Ti,W)(B,C).
Claim 18
Dependent Claim
34 words
The cermet alloy according to claim 16, wherein said W-Co-B compound comprises core/shell particles having a core comprising CoW 2 B 2 , said core having thereon at least a partial shell comprising CoWB.
Claim 19
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 W-Co-B compound.
Claim 20
Dependent Claim
22 words
The cermet alloy according to claim 18, wherein the metallic Co content of said bonding phase is at most 3.5 wt %.
Claim 21
Dependent Claim
23 words
The cermet alloy according to claim 18, wherein said W-Co-B compound comprises (1) CoWB or (2) CoWB and CoW 2 B 2 .
Claim 22
Dependent Claim
60 words
A base plate for forming a diamond film thereon, said base plate comprising a sintered body having a structure comprising a hard phase and a bonding phase; said hard phase comprising (1) WC and (2) at least one W-Co-B compound; said bonding phase comprising Co, and the metallic Co content of the bonding phase being at most 2.0 wt %.
Claim 23
Dependent Claim
60 words
A base plate for forming a diamond film thereon, said base plate comprising a sintered body having a structure comprising a hard phase and a bonding phase; said hard phase comprising (1) WC and (2) at least one W-Co-B compound; said bonding phase comprising Co, and the metallic Co content of the bonding phase being at most 2.0 wt %.
Claim 24
Dependent Claim
69 words
A diamond tool comprising a base plate and a diamond film on the surface of the base plate; said base plate comprising a sintered body having a structure comprising a hard phase and a bonding phase; said hard phase comprising (1) WC and (2) at least one W-Co-B compound; said bonding phase comprising Co, and the metallic Co content of the bonding phase being at most 2.0 wt %.
Claim 25
Dependent Claim
69 words
A diamond tool comprising a base plate and a diamond film on the surface of the base plate; said base plate comprising a sintered body having a structure comprising a hard phase and a bonding phase; said hard phase comprising (1) WC and (2) at least one W-Co-B compound; said bonding phase comprising Co, and the metallic Co content of the bonding phase being at most 2.0 wt %.
Claim 26
Independent Claim
101 words
A method for producing a cermet alloy comprising the steps of: (a) uniformly mixing (1) 10 to 45 vol % of a powder comprising WB; (2) 5 to 20 vol % of a powder comprising Co; and (3) the balance being a powder comprising at least one of MC, MN and MCN, wherein M is at least one element selected from Ti, Zr, Hf, Th, V, Nb, Ta, Pa, Cr, Mo, U and W; (b) forming the mixture into green body; and (c) sintering the green body at a temperature of 1,300 to 1,600 ° C. for 10 to 120 minutes.
Claim 27
Independent Claim
101 words
A method for producing a cermet alloy comprising the steps of: (a) uniformly mixing (1) 10 to 45 vol % of a powder comprising WB; (2) 5 to 20 vol % of a powder comprising Co; and (3) the balance being a powder comprising at least one of MC, MN and MCN, wherein M is at least one element selected from Ti, Zr, Hf, Th, V, Nb, Ta, Pa, Cr, Mo, U and W; (b) forming the mixture into green body; and (c) sintering the green body at a temperature of 1,300 to 1,600 ° C. for 10 to 120 minutes.
Claim 28
Dependent Claim
21 words
The method for producing a cermet alloy according to claim 23, wherein M represents Ti and said hard phase comprises TiC.
Claim 29
Dependent Claim
21 words
The method for producing a cermet alloy according to claim 23, wherein M represents W and said hard phase comprises WC.
Claim 30
Dependent Claim
23 words
The cermet alloy as claimed in claim 1, wherein M represents at least one element selected from Ti, W, Mo, Ta and Nb.
References Cited (Backward Citations)
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