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US5152931A
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Metallic composition and methods for making and using the same
Assignee: Vibrantz Corp
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Filing: 1990-03-12
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Granted: 1992-10-06
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Expires: 2010-03-12
Abstract
Abstract The invention provides a metallic composition and methods for making and using the same. In a preferred embodiment the metallic composition forms a conductor path and is bonded to a substrate of aluminum nitride. The metallic composition comprises Mo, Si, Cu and Mn. The Si may be present in the metallic composition as MoSi 2 . The metallic composition may be produced by firing a paste that has been applied to a substrate of aluminum nitride. The paste comprises an organic vehicle and a metallic powder. The metallic powder preferably comprises about 60% to about 90% by weight Mo, about 0.5% to about 15% by weight MoSi 2 , about 5% to about 20% Cu and up to about 20% by weight Mn.
Inventors
- 👤 John H. Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:27
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H01; H01B; H01B1/00; H01B1/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
49 words
A paste composition for forming an electrically conductive path upon a dielectric substrate, said paste composition comprising at least one organic vehicle and a metallic powder, said metallic powder comprising about 60% to about 90% by weight molybdenum (Mo) and about 0.5% to about 15% by weight silicon (Si).
Claim 2
Dependent Claim
49 words
A paste composition for forming an electrically conductive path upon a dielectric substrate, said paste composition comprising at least one organic vehicle and a metallic powder, said metallic powder comprising about 60% to about 90% by weight molybdenum (Mo) and about 0.5% to about 15% by weight silicon (Si).
Claim 3
Dependent Claim
23 words
A paste as set forth in claim 1 wherein said metallic powder comprises about 0.5% to about 15% by weight MoSi 2 .
Claim 4
Dependent Claim
23 words
A paste as set forth in claim 1 wherein said metallic powder includes copper (Cu) and up to about 20% by weight Mn.
Claim 5
Dependent Claim
47 words
A paste as set forth in claim 1 wherein said metallic powder comprises about 60% to about 90% by weight Mo, about 0.5% to about 15% by weight MoSi 2 , about 5% to about 20% by weight Cu and up to about 20% by weight Mn.
Claim 6
Dependent Claim
23 words
A paste as set forth in claim 1 wherein said metallic powder comprises about 80% to about 88% by weight of said paste.
Claim 7
Dependent Claim
15 words
A paste as set forth in claim 1 wherein said organic vehicle comprises a binder.
Claim 8
Dependent Claim
15 words
A paste as set forth in claim 1 wherein said organic vehicle comprises a solvent.
Claim 9
Independent Claim
105 words
A method of producing a paste for use in forming an electrically conductive path upon a dielectric substrate, said method comprising the steps of: (A) milling manganese (Mn), molybdenum (Mo) and silicon (Si) in the presence of a solvent so as to produce a solvent-laden metallic powder, the metallic portion of such solvent-laden metallic powder comprising about 60% to about 90% by weight Mo and about 0.5% to about 15% by weight Si and up to about 20% by weight Mn; (B) drying such solvent-laden metallic powder; and (c) adding at least one organic vehicle to such metallic powder so as to produce such paste.
Claim 10
Independent Claim
105 words
A method of producing a paste for use in forming an electrically conductive path upon a dielectric substrate, said method comprising the steps of: (A) milling manganese (Mn), molybdenum (Mo) and silicon (Si) in the presence of a solvent so as to produce a solvent-laden metallic powder, the metallic portion of such solvent-laden metallic powder comprising about 60% to about 90% by weight Mo and about 0.5% to about 15% by weight Si and up to about 20% by weight Mn; (B) drying such solvent-laden metallic powder; and (c) adding at least one organic vehicle to such metallic powder so as to produce such paste.
Claim 11
Dependent Claim
41 words
A method of producing a paste as set forth in claim 8 wherein during said step (A) such Mn, Mo and Si are milled to produce such solvent-laden metallic powder having an average particle size of less than about 2 microns.
Claim 12
Dependent Claim
22 words
A method of producing a paste as set forth in claim 8 wherein such organic vehicle comprises a binder and a solvent.
Claim 13
Dependent Claim
22 words
A method of producing a paste as set forth in claim 10 wherein such binder comprises ethylcellulose and such solvent comprises terpineol.
Claim 14
Dependent Claim
29 words
A method of producing a paste as set forth in claim 8 wherein during said step (A) copper (Cu) is milled in conjunction with such Mn, Mo and Si.
Claim 15
Independent Claim
73 words
A method of producing a paste for use in forming an electrically conductive path upon a dielectric substrate, said method comprising the step of mixing a metallic powder with at least one organic vehicle, such metallic powder comprising about 60% to about 90% by weight molybdenum (Mo), about 0.5% to about 15% by weight silicon (Si), up to about 20% by weight Mn, and about 5% to about 20% by weight copper (Cu).
Claim 16
Independent Claim
73 words
A method of producing a paste for use in forming an electrically conductive path upon a dielectric substrate, said method comprising the step of mixing a metallic powder with at least one organic vehicle, such metallic powder comprising about 60% to about 90% by weight molybdenum (Mo), about 0.5% to about 15% by weight silicon (Si), up to about 20% by weight Mn, and about 5% to about 20% by weight copper (Cu).
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |