Conductive silver-epoxy pastes: characteristics of alternative formulations

Franey, J. P.; Graedel, T. E.; Gualtieri, G. J.; Kammlott, G. W.; Malm, D. L.; Sharpe, Louis H.; Tierney, V.

doi:10.1007/bf00549816

Cited by 5 publications

(1 citation statement)

References 14 publications

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“…[121] For example, Torrseal ™ epoxy cement is a low vapor pressure epoxy material capable of being used to 100 o C. Where electrical conductivity is desired, copper or silver flakes can be added to the adhesive.…”

Section: Permanent Joiningmentioning

confidence: 99%

The Low-Pressure Gas and Vacuum Processing Environment

Mattox¹

1998

Handbook of Physical Vapor Deposition (PVD) Processing

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Section: Permanent Joiningmentioning

confidence: 99%

The Low-Pressure Gas and Vacuum Processing Environment

Mattox¹

1998

Handbook of Physical Vapor Deposition (PVD) Processing

View full text Add to dashboard Cite

Electrical properties of conductive adhesives as affected by particle compositions, particle shapes, and oxidizing temperatures of copper powders in a polymer matrix

Lin

Chiu

2004

J of Applied Polymer Sci

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The effects of particle compositions, particle shapes, and oxidation temperatures on the electrical properties of conductive adhesives have been investigated. Silver-coated copper powders and uncoated copper powders with spherical and flake-shaped particles are oxidized at temperatures such as 30, 175, 240, 300°C and 350°C for 2 h and dispersed in an epoxy matrix. The results of this study indicate that the electrical properties of the conductive adhesives are strongly affected by the particle compositions and oxidation temperatures and only slightly affected by the particle shapes. Silver-coated copper powders show significantly greater oxidation resistance than uncoated copper powders. To understand how silver-coated copper powders show such oxidation resistance, they are analyzed by the techniques of thermogravimetric analysis (TGA), X-ray diffraction (XRD), and Auger spectroscopy to observe how metal oxides such as AgO, Cu 2 O, and CuO affect the electrical properties of the conductive adhesives.

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Effects of oxidation and particle shape on critical volume fractions of silver‐coated copper powders in conductive adhesives for microelectronic applications

Lin

Chiu

2004

Polymer Engineering & Sci

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The effects of oxidation and particle shape on critical volume fractions of silver‐coated copper powders in conductive adhesives are investigated. Silver‐coated copper powders with spherical and flake‐shaped particles were oxidized at temperatures of 30°C, 175°C and 240°C for two hours and dispersed in an epoxy matrix. As silver‐coated copper powders are oxidized at 30°C and 175°C, the critical volume fractions of the conductive adhesives are slightly affected by oxidation and particle shape at these temperatures. As the oxidation temperature approaches 240°C, the critical volume fractions of the conductive adhesives are strongly affected by oxidation temperature and particle shape, owing to the formation of oxides such as Cu2O on the surface of silver‐coated copper powder—Cu diffuses from the interior to the surface of silver‐coated copper powder and reacts with the oxygen in the air. Silver‐coated copper powder with flake‐shaped particles shows lower critical volume fractions in conductive adhesives than silver‐coated copper powder with spherically shaped particles. Polym. Eng. Sci. 44:2075–2082, 2004. © 2004 Society of Plastics Engineers.

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Conductive silver-epoxy pastes: characteristics of alternative formulations

Cited by 5 publications

References 14 publications

The Low-Pressure Gas and Vacuum Processing Environment

The Low-Pressure Gas and Vacuum Processing Environment

Electrical properties of conductive adhesives as affected by particle compositions, particle shapes, and oxidizing temperatures of copper powders in a polymer matrix

Effects of oxidation and particle shape on critical volume fractions of silver‐coated copper powders in conductive adhesives for microelectronic applications

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