EP0008437B1
Expired / Lapsed
EP
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Resistor and/or conductor composition comprising a hexaboride conductive material
Assignee: EIDP Inc
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Filing: 1979-08-16
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Granted: 1982-04-28
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Expires: 1999-08-16
Abstract
No abstract record available.
Inventors
- 👤 Paul Christopher Donohue
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:35
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06566; H10; H10D; H10D86/00; H10D86/80; H10D86/85
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
132 words
A resistor and/or conductor composition consisting essentially of inorganic powder solids content dispersed in an organic vehicle wherein the solids content consists essentially of: A. 10-95 parts by weight, based on the weight of solids, of conductive material selected from the group consisting of LaB 6 , YB 6 , rare earth hexaborides, CaB 6 , BaB 6 and SrB 6 ; and B. 90-5 parts by weight, based on the weight of solids, of at least 98 mole%, based on the mole% of the oxide components of the glass, of nonreducible glass, each component having a Gibbs free energy of formation at 900°C of less than approximately -78 kcal/mole per each metal-oxygen bond in the molecule; wherein the composition is compatible with copper conductors and is fireable in substantially nonoxidizing atmosphere.
Claim 2
Dependent Claim
132 words
A resistor and/or conductor composition consisting essentially of inorganic powder solids content dispersed in an organic vehicle wherein the solids content consists essentially of: A. 10-95 parts by weight, based on the weight of solids, of conductive material selected from the group consisting of LaB 6 , YB 6 , rare earth hexaborides, CaB 6 , BaB 6 and SrB 6 ; and B. 90-5 parts by weight, based on the weight of solids, of at least 98 mole%, based on the mole% of the oxide components of the glass, of nonreducible glass, each component having a Gibbs free energy of formation at 900°C of less than approximately -78 kcal/mole per each metal-oxygen bond in the molecule; wherein the composition is compatible with copper conductors and is fireable in substantially nonoxidizing atmosphere.
Claim 3
Dependent Claim
13 words
The composition of Claim 1 wherein said conductive material is LaB 6 .
Claim 4
Dependent Claim
17 words
The composition of Claim 2 wherein the average particle size of LaB 6 is below 1 micron.
Claim 5
Dependent Claim
16 words
The composition of Claim 3 wherein the average particle size of LaB 6 is 0.055-0.32 micron.
Claim 6
Dependent Claim
74 words
The composition of Claim 1 wherein said nonreducible glass is based on nonreducible oxides selected from the group consisting of CaO, Th0 2 , BeO, La 2 O 3 , SrO, MgO, Y 2 0 3 , rare earth oxides, Sc 2 0 3 , BaO, Hf0 2 , ZrO 2 , AI 2 0 3 , Li 2 O, TiO 2 , CeO 2 , Si0 2 and B 2 0 3 .
Claim 7
Dependent Claim
56 words
The composition of Claim 1 wherein said nonreducible glass contains 10-30 mole% of at least one of CaO, BaO and SrO; 35-55 mole% of Si0 2 ; 20-35 mole% of B 2 0 3 ; 5-15 mole% of Al 2 O 3 ; 0-4 mole% of ZrO 2 ; and 0-1 mole% of Ti0 2 .
Claim 8
Dependent Claim
16 words
The composition of Claim 6 wherein the oxide present at the 10-30 mole% level is CaO.
Claim 9
Dependent Claim
19 words
The composition of Claim 1 wherein the weight ratio of solids content to vehicle is from 1:2 to 20:1.
Claim 10
Dependent Claim
144 words
A resistor and/or conductor composition consisting essentially of inorganic powder solids content dispersed in an organic vehicle wherein the solids content consists essentially of A. 10-95 parts by weight, based on the weight of solids, of LaB 6 having an average particle size below 1 micrometer; and B. 90-5 parts by weight, based on the weight of solids, of at least 98 mole%, based on the mole% of the oxide components of the glass, of nonreducible glass containing 10-30 mole% of at least one of CaO, BaO and SrO; 35-55 mole% of Si0 2 ; 20-35 mole% of B 2 0 3 ; 5-15 mole% of Al 2 O 3 ; 0-4 mole% of Zr0 2 ; and 0-1 mole% of Ti0 2 ; wherein the vehicle is based on copolymers of ethylene-vinyl acetate containing not less than 53% by weight of vinyl acetate.
Claim 11
Dependent Claim
144 words
A resistor and/or conductor composition consisting essentially of inorganic powder solids content dispersed in an organic vehicle wherein the solids content consists essentially of A. 10-95 parts by weight, based on the weight of solids, of LaB 6 having an average particle size below 1 micrometer; and B. 90-5 parts by weight, based on the weight of solids, of at least 98 mole%, based on the mole% of the oxide components of the glass, of nonreducible glass containing 10-30 mole% of at least one of CaO, BaO and SrO; 35-55 mole% of Si0 2 ; 20-35 mole% of B 2 0 3 ; 5-15 mole% of Al 2 O 3 ; 0-4 mole% of Zr0 2 ; and 0-1 mole% of Ti0 2 ; wherein the vehicle is based on copolymers of ethylene-vinyl acetate containing not less than 53% by weight of vinyl acetate.
References Cited (Backward Citations)
No citation records indexed.
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