PbO-free glasses for low temperature packaging | Zendy

Richard K. Brow | Zendy; Denise N. Bencoe | Zendy; D. R. Tallant | Zendy

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PbO-free glasses for low temperature packaging

Author(s) -

Richard K. Brow,

Denise N. Bencoe,

D. R. Tallant

Publication year - 1997

Language(s) - English

Resource type - Reports

DOI - 10.2172/534533

Subject(s) - polyphosphate , raman spectroscopy , materials science , zinc phosphate , phosphate glass , atmospheric temperature range , pyrophosphate , tetrahedron , zinc , glass transition , phosphate , crystallography , mineralogy , analytical chemistry (journal) , chemistry , metallurgy , thermodynamics , composite material , optics , optoelectronics , doping , biochemistry , physics , organic chemistry , chromatography , enzyme , polymer

Zinc polyphosphate glasses were examined as potential candidates for low temperature sealing applications. Glass-formation and properties were determined for the ZnO-P{sub 2}O{sub 5}, ZnO-B{sub 2}O{sub 3}-P{sub 2}O{sub 5} and ZnO-SnO-P{sub 2}O{sub 5} systems, and information about the short-range structures of these glasses was obtained by Raman and solid state nuclear magnetic resonance spectroscopies. In general, the most durable polyphosphate glasses have structures based on relatively short pyrophosphate chain lengths (i.e., 2 P-tetrahedra). Modified phosphate compositions are given, including compositions used to seal float glass substrates at temperatures as low as 500{degrees}C

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