Conductive pastes

• US 5,288,430 A
• Filed: 04/10/1992
• Issued: 02/22/1994
• Est. Priority Date: 04/12/1991
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Amemiya, Chika
• Primary Examiner(s): Lieberman, Paul
• Assistant Examiner(s): KOPEC, MARK T
• Application Number:
  US07/866,491
• Time in Patent Office: 683 Days
• Field of Search: 252/500, 252/512, 252/514, 252/513, 252/518, 252/520, 420/417, 420/501, 556/51, 106/1.26
• US Class Current: 252/512
• CPC Class Codes: C22C 1/0466 Alloys based on noble metals
• CPC Class Codes: H01G 4/0085 Fried electrodes
• CPC Class Codes: H01G 4/30 Stacked capacitors H01G4/33 takes precedence

Abstract

A conductive paste is provided which is prepared by kneading a composition comprising silver metal powder, an organic vehicle, and a silver-titanium alloy powder contained in an amount of 0.1 to 6.0% by weight based on the amount of the silver metal powder.

Claims

1. A conductive paste prepared by kneading a composition comprising silver metal powder, an organic vehicle, and a silver-titanium alloy powder contained in an amount of 0.1 to 6.0% by weight based on the amount of the silver metal powder.

2. The conductive paste according to claim 1 wherein said organic vehicle comprises an organic binder and a solvent.

3. The conductive paste according to claim 1 wherein said organic vehicle is present in an amount of about 47 to about 50% by weight.

4. The conductive paste according to claim 1 wherein said silver metal powder is present in an amount of about 35% by weight.

5. The conductive paste according to claim 1 wherein said conductive paste further includes palladium powder.

6. The conductive paste according to claim 5 wherein said palladium powder is present in an amount of about 15% by weight.

7. A conductive paste comprising a silver metal powder, an organic vehicle and 0.1 to 6.0% by weight, based on the amount of silver metal powder, of a silver-titanium alloy powder.

8. The conductive paste according to claim 7 wherein said organic vehicle comprises an organic binder and a solvent.

9. The conductive paste according to claim 7 wherein said organic vehicle is present in an amount of about 47 to about 50% by weight.

10. The conductive paste according to claim 7 wherein said silver metal powder is present in an amount of about 35% by weight.

11. The conductive paste according to claim 7 wherein said conductive paste further includes palladium powder.

12. The conductive paste according to claim 11 wherein said palladium powder is present in an amount of about 15% by weight.