Air-firable glass-free metal electrically conductive thick film pastes of different compositions were developed by using a titanium alloy component, and tin and zinc metal substitutes for glass frit used in traditional thick film pastes. The effect of different components on the electrical resistivity and bonding between the thick film and the alumina substrate was investigated. Thick films with low electrical resistivity and good bonding to the alumina substrate were obtained by using silver, zinc, tin, and TiCu alloy powders in the pastes. The addition of zinc at a small proportion (<0.5 wt.%) to a thick film paste enhanced the adhesion between the thick film and the alumina substrate with negligible increase in the electrical resistivity. The use of titanium alloy powder instead of pure titanium powder is preferred. Better composition distribution, and consequently, better wetting and bonding are expected by using active metal particles of a smaller size.
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March 2001
Technical Papers
Development of Glass-Free Metal Electrically Conductive Thick Films
Zongrong Liu,
Zongrong Liu
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, NY 14260-4400
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D. D. L. Chung
e-mail: ddlchung@acsu.buffalo.edu
D. D. L. Chung
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, NY 14260-4400
Search for other works by this author on:
Zongrong Liu
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, NY 14260-4400
D. D. L. Chung
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, NY 14260-4400
e-mail: ddlchung@acsu.buffalo.edu
Contributed by the Electrical and Electronic Packaging Division for publication in the JOURNAL OF ELECTRONIC PACKAGING. Manuscript received by the EEPD July 13, 2000. Associate Editor: B. Coutois.
J. Electron. Packag. Mar 2001, 123(1): 64-69 (6 pages)
Published Online: July 13, 2000
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Received:
July 13, 2000
Citation
Liu , Z., and Chung, D. D. L. (July 13, 2000). "Development of Glass-Free Metal Electrically Conductive Thick Films ." ASME. J. Electron. Packag. March 2001; 123(1): 64–69. https://doi.org/10.1115/1.1329131
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