EP0701982A1
Expired / Lapsed
EP
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Layered film made of ultrafine particles and a hard composite material for tools possessing the film
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1995-09-18
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Granted: —
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Expires: 2015-09-18
Abstract
Abstract Ultrafine particle-layered film for coating cutting tools. The film (2) has more than two layers of at least two compounds consisting mainly of carbide, nitride, carbonitride or oxide of at least one element selected from a group consisting of IVa group elements, Va group elements, VIa group elements, Al, Si and B, and that each layer is made of ultrafine particles. Ultrafine particle-layered film improves hardness, strength, wear-resistance and heat-resistance of the tools.
Inventors
- 👤 Satoru c/o Itami Works of Simutomo Elec. Kukino
- 👤 Tetsuo c/o Itami Works of Simutomo Elec. Nakai
- 👤 Mitsuhiro c/o Itami Works of Simutomo Elec. Goto
- 👤 Takashi c/o Itami Works of Simutomo El. Yoshioka
- 👤 Makoto c/o Itami Works of Simutomo El. Setoyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 12:23
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B35/00; C04B35/515; C04B35/58; C04B35/583; C04B35/5831; C04B41/45; C04B41/4505; C04B41/4529; C04B41/52; C04B41/80; C04B41/81; C04B41/89; C23; C23C; C23C14/00; C23C14/06; C23C14/0641; C23C14/0664; C23C28/00; C23C28/04; C23C28/044; C23C28/40; C23C28/42; C23C30/00; C23C30/005; C04B2111/00; C04B2111/00241; C04B2111/0025; C04B2111/00405; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
59 words
Ultrafine particle-layered film, characterized in that said film has more than two layers of at least two compounds consisting mainly of carbide, nitride, carbonitride or oxide of at least one element selected from a group consisting of IVa group elements, Va group elements, VIa group elements, Al, Si and B, and that each layer is made of ultrafine particles.
Claim 2
Dependent Claim
59 words
Ultrafine particle-layered film, characterized in that said film has more than two layers of at least two compounds consisting mainly of carbide, nitride, carbonitride or oxide of at least one element selected from a group consisting of IVa group elements, Va group elements, VIa group elements, Al, Si and B, and that each layer is made of ultrafine particles.
Claim 3
Dependent Claim
24 words
Ultrafine particle-layered film set forth in claim 1 wherein a thickness of each layer is in a range of 1 nm to 100 nm.
Claim 4
Dependent Claim
24 words
Ultrafine particle-layered film set forth in claim 2 wherein the thickness of each layer is in a range of 1 nm to 50 nm.
Claim 5
Dependent Claim
24 words
Ultrafine particle-layered film set forth in claim 3 wherein a thickness of each layer is in a range of 1 nm to 10 nm.
Claim 6
Dependent Claim
27 words
Ultrafine particle-layered film set forth in claim 1 or 2 wherein the particle sizes of each layer are in a range of 1 nm to 100 nm.
Claim 7
Dependent Claim
32 words
Ultrafine particle-layered film set forth in any one of claims 1 to 3 and 5 wherein the particle sizes of each layer are in a range of 1 nm to 50 nm.
Claim 8
Dependent Claim
30 words
Ultrafine particle-layered film set forth in any one of claims 1 to 6 wherein the particle sizes of each layer are in a range of 1 nm to 10 nm.
Claim 9
Dependent Claim
25 words
Ultrafine particle-layered film set forth in any one of claims 1 to 7 wherein layers of at least two compounds are laminated alternately and repeatedly.
Claim 10
Dependent Claim
50 words
Ultrafine particle-layered film set forth in any one of claims 1 to 8 wherein at least one layer is made of a compound whose crystal structure is cubic system and at least another one layer is made of a compound whose crystal structure is not cubic system and/or is amorphous.
Claim 11
Dependent Claim
42 words
10 Ultrafine particle-layered film set forth in claim 9 wherein at least one layer is made of a compound whose crystal structure is cubic system and at least another one layer is made of a compound whose crystal structure is hexagonal system.
Claim 12
Dependent Claim
42 words
Ultrafine particle-layered film set forth in claim 9 or 10 wherein said compound whose crystal structure is cubic system is nitride, carbide or carbonitride containing at least one element selected from a group comprising Ti, Zr, Cr, V, Hf, Al and B.
Claim 13
Dependent Claim
45 words
Ultrafine particle-layered film set forth in any one of claims 9 to 11 wherein said compound whose crystal structure is not cubic system and/or is amorphous is nitride, carbide or carbonitride containing at least one element selected from a group comprising Al, Si and B.
Claim 14
Dependent Claim
13 words
Ultrafine particle-layered film set forth in claim 12 wherein said compound is AlN.
Claim 15
Dependent Claim
31 words
Ultrafine particle-layered film set forth in any one of claims 1 to 13 wherein a composition modulated layer in which composition change gradually and continuously is interposed between adjacent two layers.
Claim 16
Dependent Claim
44 words
A hard composite material for tool coating, characterized in that said tool has said ultrafine particle-layered film set forth in any one of claims 1 to 14 on at least a portion of surface of a substrate of said tool where cutting is effected.
Claim 17
Dependent Claim
49 words
The material set forth in claim 15 wherein said substrate is a CBN sintered body containing more than 20 % by volume of cubic boron nitride (CBN), diamond sintered body containing more than 40 % by volume of diamond, silicon nitride sintered body or aluminium oxide-titanium carbide sintered body.
Claim 18
Dependent Claim
18 words
The material set forth in claim 15 wherein said substrate is cemented carbide, cermet or high speed steel.
Claim 19
Dependent Claim
26 words
The material set forth in any one of claim 15 to 17 wherein a thickness of said ultrafine particle-layered film is 0.5 µm to 15 µm.
Claim 20
Dependent Claim
69 words
The material set forth in claim 18 wherein said substrate is a CBN sintered body containing 30 to 90 % by volume of cubic boron nitride (CBN), reminding part of said CBN sintered body being a binder consisting of at least one member selected from a group comprising nitride, carbide, boride and oxide of IVa, Va and VIa elements and their solid solutions and aluminium compounds and inevitable impurities.
Claim 21
Dependent Claim
60 words
The material set forth in claim 19 wherein said binder comprises 50 to 98 % by weight of at least one member selected from a group comprising TiC, TiN, TiCN, (TiM)C, (TiM)N and (TiM)CN in which M is a transition metal selected from IVa, Va nd VIa elements except Ti, and 2 to 50 % by weight of aluminium compound.
Claim 22
Dependent Claim
32 words
The material set forth in claim 20 wherein said binder consists of 50 to 98 % by weight of TiN, 2 to 50 % by weight of aluminium compound and inevitable impurities.
Claim 23
Dependent Claim
59 words
The material set forth in claim 21 wherein said substrate is a CBN sintered body containing 40 to 95 % by volume of cubic boron nitride (CBN), remaining part of said CBN sintered body being a binder selected from a group comprising TiN, boride or carbide of Co or W, aluminum nitride and their solid solutions and inevitable impurities.
Claim 24
Dependent Claim
44 words
The material set forth in claim 18 wherein said binder contains 1 to 50 % by weight of TiN and at least one member selected from a group comprising boride and carbide of Co or W, aluminum nitride, aluminum boride and their solid solutions.
Claim 25
Dependent Claim
48 words
The material set forth in claim 18 wherein said substrate is a CBN sintered body containing more than 90 % by volume of cubic boron nitride (CBN), reminding part of said CBN sintered body being a binder comprising boride of Ia or IIa elements, TiN and inevitable impurities.
Claim 26
Dependent Claim
26 words
The material set forth in claim 24 wherein said binder contains 1 to 50 % by weight of TiN and boronitride of Ia or IIa elements.
Claim 27
Dependent Claim
37 words
The material set forth in claim 18 wherein said substrate is a diamond sintered body containing 50 to 98 % by volume of diamond, remaining part of said sintered body being iron family element and inevitable impurities.
Claim 28
Dependent Claim
50 words
The material set forth in claim 18 wherein said substrate is a diamond sintered body containing 60 to 95 % by volume of diamond, reminding part of said sintered body comprising iron family element, at least one carbide or carbonitride of IVa, Va and VIa elements, WC and inevitable impurities.
Claim 29
Dependent Claim
23 words
The material set forth in claim 27 wherein said remaining part of said diamond sintered body comprises Co, TiC, WC and inevitable impurities.
Claim 30
Dependent Claim
39 words
The material set forth in claim 18 wherein said substrate is a diamond sintered body containing 60 to 98 % by volume of diamond, remaining part of said diamond sintered body comprising silicon carbide, silicon, WC and inevitable impurities.
Claim 31
Dependent Claim
63 words
The material set forth in claim 18 wherein said substrate is a sintered body containing more than 90 % by volume of silicon nitride, reminding part of said sintered silicon nitride body comprising at least one member selected from a group comprising aluminum oxide, aluminum nitride, yttrium oxide, magnesium oxide, zirconium oxide, hafnium oxide, rear earth elements, TiN and TiC and inevitable impurities.
Claim 32
Dependent Claim
65 words
The material set forth in claim 18 wherein said substrate is a sintered body made of 20 to 80 % by volume of aluminum oxide and 75 to 15 % by volume of titanium carbide, remaining part of said sintered silicon nitride body comprising oxide of at least one element selected from a group comprising Mg, Y, Ca, Zr, Ni and Ti and inevitable impurities.
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