Accession Number : ADD015111

Title :   Glassy Binder System for Ceramic Substrates, Thick Films and the Like.

Descriptive Note : Patent,Filed 25 Mar 88, patented 27 Aug 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Mattox, Douglas M

Report Date : 27 Aug 1991

Pagination or Media Count : 5

Abstract : This patent discloses a ceramic material for electronic circuit devices that is sintered at less than or equal to 1000 C. A filler material such as quartz and a glassy binder RO--aluminum oxides--are mixed together along with an appropriate glassy binder prior to firing. RO is drawn from the group of metal oxides magnesium oxide, calcium oxide, strontium oxide, barium oxide, zinc oxide or cadmium oxide and the glassy binders form no more than 40 vol% of the ceramic material. The glassy binder has a suitable viscosity and other properties so that after it is mixed with the quartz filler, sintering occurs at the relatively low temperature. As a consequence, high conductivity conductors made of copper, silver and gold can be appropriately metallized prior to firing. The strength and low dielectric constant of the ceramic material make the material well adapted for ceramic substrates, thick films and the like which are used in VHSIC and VLSI applications.

Descriptors :   BARIUM OXIDES, BINDERS, CADMIUM, CALCIUM OXIDES, CERAMIC MATERIALS, CIRCUITS, CONDUCTIVITY, CONSTANTS, COPPER, DIELECTRIC PROPERTIES, ELECTRIC CONDUCTORS, ELECTRONIC EQUIPMENT, FILLERS, GLASS, GOLD, HIGH RATE, INTEGRATED CIRCUITS, LOW TEMPERATURE, MATERIALS, METAL COMPOUNDS, OXIDES, PATENTS, QUARTZ, SILVER, SINTERING, STRONTIUM, SUBSTRATES, THICK FILMS

Subject Categories : Ceramics, Refractories and Glass
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE