Coefficient of thermal expansion filler for vanadium-based frit materials and/or methods of making and/or using the same
Certain example embodiments relate to seals for glass articles. Certain example embodiments relate to a composition used for sealing an insulted glass unit. In certain example embodiments the composition includes vanadium oxide, barium oxide, zinc oxide, and at least one additional additive. For instance, another additive that is a different metal oxide or different metal chloride may be provided. In certain example embodiments, a composition may be combined with a binder solution that substantially or completely burns out by the time the composition is melted. In certain example embodiments, a CTE filler is included with a frit material. In certain example embodiments, a vacuum insulated glass unit includes first and second glass substrates that are sealed together with a seal that includes the above-described composition.
1. A vacuum insulated glass (VIG) window unit, comprising:
first and second substantially parallel, spaced apart glass substrates;
wherein the first and second glass substrates comprise soda lime silicate based glass;
an edge seal provided proximate a periphery of the first and/or second glass substrates of the VIG window unit to form a hermetic seal therebetween and at least partially defining a gap between the first and second substrates,
wherein the gap is at a pressure less than atmospheric pressure,
wherein the edge seal is formed from edge seal material including (a) a coefficient of thermal expansion (CTE) material that is substantially lead-free, and (b) a frit material having a composition comprising vanadium oxide, barium oxide, and zinc oxide;
wherein the vanadium oxide, the barium oxide, and the zinc oxide are the three largest elements making up the frit material composition;
wherein the frit material having a composition comprising vanadium oxide, barium oxide, and zinc oxide, comprises: from 50-60% vanadium oxide and from 15-35% barium oxide; and
wherein the edge seal material has a first CTE value that is within about 15% of soda lime silicate based glass by virtue of the CTE material's composition.
2. The VIG window unit of claim 1 , further comprising a plurality of spacers provided between the glass substrates for spacing the glass substrates from each other.