Abstract: A ceramic product includes a glass layer having 0.1 wt % to 9 wt % of a luster pigment for providing a metallic look. The glass layer includes 40 wt % to 60 wt % of silicon dioxide, 15 wt % to 35 wt % of boron oxide, 18 wt % or less of one or more alkali metal oxides selected from the group consisting of lithium oxide, sodium oxide, and potassium oxide, 4 wt % or less of one or more alkali metal oxides selected from lithium oxide and sodium oxide, and 5 wt % or more of potassium oxide.

Abstract: An electronics package is disclosed herein that includes a glass substrate having an exterior portion surrounding an interior portion thereof, wherein the interior portion has a first thickness and the exterior portion has a second thickness larger than the first thickness. An adhesive layer is formed on a lower surface of the interior portion of the glass substrate. A semiconductor device having an upper surface is coupled to the adhesive layer, the semiconductor device having at least one contact pad disposed on the upper surface thereof. A first metallization layer is coupled to an upper surface of the glass substrate and extends through a first via formed through the first thickness of the glass substrate to couple with the at least one contact pad of the semiconductor device.

Abstract: A cooker and methods of manufacturing and controlling the same. The cooker including a first coating layer that is a general ceramic enamel layer and a second coating layer that includes phosphorus oxide-based components are coated on a surface of a cavity corresponding to the inner surface of the cooking chamber. Therefore, the inside of the cooking chamber can be more easily cleaned.

Abstract: There is provided an antioxidant agent excellent in anti-dripping property and anti-peeling property. The antioxidant agent in accordance with the present invention contains a plurality of glass frits having different softening points, potter's clay, and bentonite and/or sepiolite. On account of the potter's clay, the antioxidant agent applied to the surface of a metallic starting material is less liable to drip down. Further, on account of the bentonite and/or sepiolite, the antioxidant agent is less liable to peel off the surface of the metallic starting material.

Abstract: A method of manufacturing a resistor paste comprising steps of: (a) preparing a basic resistor paste comprising, (i) a conductive powder, (ii) a first glass frit, and (iii) a first organic medium; and (b) preparing a glass paste as a TCR driver comprising, (iv) a second glass frit comprising manganese oxide, and (v) a second organic medium, (c) adding the glass paste to the basic resistor paste to obtain a resistor paste with a desired TCR.

Abstract: When local heating by use of laser sealing or the like is applied, the bonding strength between glass substrates and a sealing layer is improved to provide an electronic device having increased reliability. An electronic device includes a first glass substrate, a second glass substrate, and a sealing layer to seal an electronic element portion disposed between these glass substrates. The sealing layer is a layer obtained by locally heating a sealing material by an electromagnetic wave, such as laser light or infrared light, to melt-bond the sealing material, the sealing material containing sealing glass, a low-expansion filler and an electromagnetic wave absorber. In the first and second glass substrates, each reacted layer is produced to have a maximum depth of at least 30 nm from an interface with the sealing layer.

Abstract: This disclosure relates to electroconductive paste formulations useful in solar panel technology. In one aspect, the disclosure relates to an inorganic reaction system for use in electroconductive paste compositions, wherein the inorganic reaction system comprises a lead containing matrix composition and a tellurium containing matrix composition. In another aspect, the disclosure relates to an electroconductive paste composition comprising a conductive metal component, an inorganic reaction system and an organic vehicle. Another aspect of the disclosure relates to a solar cell produced by applying an electroconductive paste composition of the invention to a silicon wafer. Yet another aspect relates to a solar cell module assembled using solar cells produced by applying an electroconductive paste composition to a silicon wafer, wherein the electroconductive paste composition comprises an conductive metal component, an inorganic reaction system and an organic vehicle.

Abstract: A seal structure is provided for an energy storage device. The seal structure includes a first sealing glass composition and a second sealing glass composition joining an ion-conducting first ceramic to an electrically insulating second ceramic. The first sealing glass composition includes less than or equal to about 20 weight percent silica based on the weight of the first sealing glass composition. The second sealing glass composition includes greater than or equal to about 40 weight percent silica based on the weight of the second sealing glass composition. A method for making the seal structure is provided. An article comprising the seal structure is also provided.

Abstract: The present invention relates to a color adapting composition used for coloring and color adapting porcelain for ceramic crown such as dental restorations and prosthetics, and aluminosilicate glass appropriate for using in a color adapting composition. More specifically, a color adapting composition for dental porcelains are prepared by blending two or more kinds of glass frits having different sintering temperatures from each other and an inorganic pigment or a colored glass obtained by previously dispersing inorganic pigments in glass.

Abstract: The invention is directed to a process for making screen-printable getter composition comprising: (a) glass frit; and (b) pre-hydrated desiccant material; dispersed in (c) organic medium. The desiccant material is pre-hydrated to reach its saturation level of moisture absorption. The process of pre-hydration can be done by exposing the desiccant in a normal temperature/humidity environment of for example, 25° C. and 50-60% RH. For 24 to 48 hours or up to the time when weight gain (due to moisture absorption) stops increasing. An accelerated hydration process in a chamber with higher than normal humidity level (i.e. 50% Relative Humidity) is also applicable to shorten the time of exposure to fully hydrate the desiccant material.

Abstract: The invention is directed to a screen-printable getter composition comprising: (a) glass frit; dispersed in (b) organic medium. The invention is further directed to a screen-printable thick film getter composition comprising: (a) glass frit; and (b) desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure.

Abstract: A laminate includes base material layers and interlayer constraining layers disposed therebetween. The base material layers are formed of a sintered body of a first powder including a glass material and a first ceramic material, and the interlayer constraining layer includes a second powder including a second ceramic material that will not be sintered at a temperature for melting the glass material, and is in such a state that the second powder adheres together by diffusion or flow of a portion of the first powder including the glass material included in the base material layer at the time of baking. The incorporated element is in such a state that an entire periphery thereof is covered with the interlayer constraining layer.

Abstract: There is provided a glass ceramic material for plasma display, in which glass fine grains (A) having a softening point of 570-640° C. are in 40-70 wt %, and glass fine grains (B) having a softening point of 480-540° C. are in 30-60 wt %, the glass ceramic material for plasma display being characterized in that the glass fine grains (A) comprise 2-12 wt % of SiO2, 50-58 wt % of B2O3, 10-20 wt % of Al2O3, 0-6 wt % of ZnO, 0-2.8 wt % of Li2O, and 10-22 wt % of at least one selected from MgO, CaO, SrO and BaO and that refractive index of the glass fine grains (A) is 1.53-1.56.

Abstract: The black-colored glass ceramic panel has a cooking surface provided with a smooth black decoration by burning in a decorative paint, which contains a colorless zinc-containing glass flux and up to 10 wt. % of a partially coated pigment. The partially coated pigment consists of 20 to 40 wt. % of a black pigment with a grain size of at most 5? and a grain size distribution characterized by a D50<2? and 60 to 80% by weight of a zinc-free boro-alumino-silicate glass coating the black pigment. The glass flux consists, in wt. %, of Li2O, 0-5; Na2O, 0-5; K2O, <2; ?Li2O+Na2O+K2O, 1-10; MgO, 0-3; CaO, 0-4; SrO, 0-4; BaO, 0-4; ZnO, >0-4; B2O3, 15-27; Al2O3, 10-20; SiO2, 43-58; TiO2, 0-3; ZrO2, Sb2O3, 0-2; F, 0-3.

Abstract: A porcelain enamel composition having a metallic appearance is disclosed. The composition comprises about 45% to about 55% SiO2, about 4 to about 20% R2O, about 9 to about 15% B2O3, about 4 to about 12% MnO2, about 1.5 to about 7% F2, about 0% to about 20% MO2, about 0% to about 10% RO, about 0% to about 6% NO2, about 0% to about 2% P2O5, about 0% to about 3% CoO, about 0% to about 3% NiO, about 0% to about 3% Al2O3, about 0% to about 3% Fe2O3, about 0% to about 3% CuO, about 0% to about 4% ZrO2, about 0% to about 2% Nb2O5, and about 0% to about 5% Sb2O3, wherein R2O represents at least one alkali oxide, wherein RO represents at least one alkaline earth oxide and wherein MO2 represents at least one opacifying pigment selected from the group consisting of ZrO2, TiO2, CeO2, SnO2 and La2O3.

Abstract: The invention is directed to a screen-printable getter composition comprising: (a) glass frit; dispersed in (b) organic medium. The invention is further directed to a screen-printable thick film getter composition comprising: (a) glass frit; and (b) desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure.

Abstract: The invention is directed to a process for making screen-printable getter composition comprising: (a) glass frit; and (b) pre-hydrated desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure. The desiccant material is pre-hydrated to reach its saturation level of moisture absorption. The process of pre-hydration can be done by exposing the desiccant in a normal temperature/humidity environment of for example, 25° C. and 50-60% RH. For 24 to 48 hours or up to the time when weight gain (due to moisture absorption) stops increasing.

Abstract: The present invention provides a lubricant composition for hot metal working which is capable of inhibiting generation of flaws on the surface of materials to be provided for hot metal working, and provides a method of hot metal working. The invention provides a lubricant composition for hot metal working comprising a plurality of glass frits respectively having different softening point from each other.

Abstract: The present invention is directed to a thick film composition for use in low temperature co-fired ceramic circuits comprising, based on weight percent total thick film composition: (a) 30-98 weight percent finely divided particles selected from noble metals, alloys of noble metals and mixtures thereof; (b) one or more selected inorganic binders and/or mixtures thereof, and dispersed in (c) organic medium, and wherein said glass compositions are immiscible or partially miscible with remnant glasses present in the low temperature co-fired ceramic substrate glasses at the firing conditions. The present invention is further directed to methods of forming multilayer circuits utilizing the above composition and the use of the composition in high frequency applications (including microwave applications).

Abstract: Frits, obscuration enamel compositions including frits and automotive windshields having obscuration enamel compositions applied thereto are described. According to one or more embodiments, the obscuration enamel composition comprises a paste component and a frit component having Bi2O3, SiO2 and B2O3 and being substantially free of Na2O. In other embodiments, a reducing agent is included in the frit component. Obscuration enamels of some embodiments have a total solids content of at least 80% by weight.

Abstract: For mounting on a substrate by using an electroconductive adhesive, an electroconductive paste for forming an external electrode which has improved moisture resistance and which is resistant to occurrence of external-electrode peeling, as well as a ceramic electronic component including the electroconductive paste are provided. The electroconductive paste includes a base-metal electroconductive powder, first glass frit, and an organic vehicle, wherein the first glass frit has a B2O3 content of 10 to 20 percent by mole, a SiO2 content of 50 to 65 percent by mole, an alkali metal oxide content of 10 to 20 percent by mole, a ZnO content of 1 to 5 percent by mole, a TiO2 content of 1 to 5 percent by mole, a ZrO2 content of 1 to 5 percent by mole, and an Al2O3 content of 1 to 5 percent by mole.

Abstract: Thick film conductive copper pastes that are lead-free and cadmium-free. The inventive copper pastes possess desirable characteristics, including good solderability, good wire bondability, a low firing temperature, and a wide temperature processing window, and provide excellent adhesion to a variety of substrates, including alumina and glass coated stainless steel substrates, as well as low resistivity, and a microstructure after firing that is dense and substantially free of pores.

Abstract: The invention is directed to a thick film getter composition comprising: (a) desiccant material; dispersed in (b) organic medium comprising (1) curable organic polymeric binder; (2) monomer; and (3) photoinitiator.

Abstract: The invention is directed to a screen-printable getter composition comprising: (a) glass frit; dispersed in (b) organic medium. The invention is further directed to a screen-printable thick film getter composition comprising: (a) glass frit; and (b) desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure.

Abstract: The invention is directed to a thick film getter composition comprising: (a) desiccant material; dispersed in (b) organic medium comprising (1) curable organic polymeric binder; (2) monomer; and (3) photoinitiator.

Abstract: A reduction resistant lead-free and cadmium-free glass composition that is particularly suitable for use in conductive ink applications is disclosed. The invention includes a capacitor, which includes a conductive copper termination. The copper termination is made by firing an ink including a glass component, which may include ZnO, provided the amount does not exceed about 65 mole %; B2O3, provided the amount does not exceed about 61 mole %; and, SiO2, provided the amount does not exceed about 63 mole %. The molar ratio of B2O3 to SiO2 is from about 0.05 to about 3.

Abstract: A porcelain enamel composition having a metallic appearance is disclosed. The composition comprises about 45% to about 55% SiO2, about 4 to about 20% R2O, about 9 to about 15% B2O3, about 4 to about 12% MnO2, about 1.5 to about 7% F2, about 0% to about 20% MO2, about 0% to about 10% RO, about 0% to about 6% NO2, about 0% to about 2% P2O5, about 0% to about 3% CoO, about 0% to about 3% NiO, about 0% to about 3% Al2O3, about 0% to about 3% Fe2O3, about 0% to about 3% CuO, about 0% to about 4% ZrO2, about 0% to about 2% Nb2O5, and about 0% to about 5% Sb2O3, wherein R2O represents at least one alkali oxide, wherein RO represents at least one alkaline earth oxide and wherein MO2 represents at least one opacifying pigment selected from the group consisting of ZrO2, TiO2, CeO2, SnO2 and La2O3.

Abstract: Thick film conductive copper pastes that are lead-free and cadmium-free. The inventive copper pastes possess desirable characteristics, including good solderability, good wire bondability, a low firing temperature, and a wide temperature processing window, and provide excellent adhesion to a variety of substrates, including alumina and glass coated stainless steel substrates, as well as low resistivity, and a microstructure after firing that is dense and substantially free of pores.

Abstract: A thick-film composition comprising: (a) conductive metal; (b) crystallized glass; (c) amorphous glass; and (d) organic medium.

Abstract: The present invention provides a composition for use in forming an enamel cover coat from which baked-on foods can be removed without the need for pyrolysis or highly alkaline cleaners. The enamel cover coat preferably exhibits no chipping or other surface defects subsequent to a 2.0 mm Plum Jam Test and an acid resistance of A or better according to ISO 2722. The composition according to the invention includes a glass component including at least a first glass frit comprising a low SiO2 glass frit. Preferably, the glass component includes a blend of the first glass frit and at least a second glass frit. Preferably, the first glass frit includes by weight from about 30% to about 45% P2O5, from about 20% to about 40% Al2O3, from about 15% to about 35% Li2O+Na2O+K2O, up to about 15% B2O3, up to about 15% MgO+CaO+SrO+BaO+ZnO, up to about 10% TiO2+ZrO2, and up to about 10% SiO2.

Abstract: The present invention provides partially crystallizing lead-free and cadmium-free glass enamel composition that fuse at low temperatures. Glass enamel compositions according to the present invention form predominantly bismuth titanate and optionally zinc titanate crystals upon firing. Preferably, glass enamel compositions according to the invention include a glass component that includes by weight from about 11% to about 52% SiO2, from 10.2% to about 40% TiO2, from about 5% to about 75% Bi2O3, up to about 8% B2O3, up to about 14% BaO+SrO, and up to about 45% by weight ZnO, where the sum of Bi2O3 and ZnO comprises from about 30% to about 85% of the glass component by weight.

Abstract: A new lead-free glass flux suitable for the decoration of ceramic materials comprises SiO2, Al2O3, B2O3 and Li2O as essential components. The lead-free glass flux is a glass mixture in which a glass composition having a relatively low coefficient of thermal expansion and a glass composition having a relatively high coefficient of thermal expansion and a relatively high chemical resistance are mixed at an appropriate ratio.

Abstract: The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO2—SiO2—MeIIO, or (II) SiO2—MeIIIO2—MeIIO, wherein: MeII is chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; MeIII is chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.

Abstract: New decorating materials suitable for the decoration of ceramic materials comprise a lead-free glass flux and at least one pigment. The glass flux comprises two lead-free glass compositions. One of the two glass compositions comprises, in weight percent, SiO2: 45 to 60%, Al2O3: 5 to 20%, B2O3: 15 to 30%, and one or more alkali metal oxides: 5 to 10%, provided that Li2O is contained in an amount of 2% or more, with the proviso that the total amount of said oxides is 90% or more of the total weight of the composition. The other of the two glass compositions comprises, in weight percent, SiO2: 60 to 75%, Al203: 5 to 20%, at least one of MgO, CaO, ZnO: 5 to 20% in total, and one or more alkali metal oxides: 0.5 to 5%, provided that Li2O is contained in an amount of 0.5% or more, with the proviso that the total amount of said oxides is 90% or more of the total weight of the composition.

Abstract: The present invention relates to a process for manufacturing recyclable black enamels that contain at least zinc, in which process glass forming materials comprising at least bismuth, silicon, boron and manganese are melted, at temperatures greater than about 900° C., and then a glass frit comprising at least zinc is added to the mixture obtained after this direct melting. The invention also relates to zinc-based recyclable black enamel compositions.

Abstract: A dense lead-free glass ceramic that has low dielectric constant and low dielectric loss for producing high-frequency ceramic devices, such as inductors and low temperature co-fired ceramics (LTCC), is disclosed. The glass ceramic consists of 15-35% by weight of lead-free borosilicate glasses with low softening point, 15-35% by weight of lead-free borosilicate glasses with high softening point, 20-80% by weight of combination of amorphous and crystalline SiO2-filler (preferably 5-30% by weight of amorphous SiO2, 10-50% by weight of crystalline SiO2) and 0.1-10% by weight of at least one oxide of Al2O3, BaO, Sb2O3, V2O5, CoO, MgO, B2O3, Nb2O5, SrO and ZnO. The glass ceramic can be densified up to 99% of its theoretical density after firing and is co-firable with conductive metals between 800-900° C. The dense glass ceramic has dielectric constant of 4.2-4.6 and loss tangent (tan ?)<0.0025 at 20 MHz and good thermal/mechanical strength for application in high frequency electronic devices.

Abstract: The present invention provides a method for preparing a glass-ceramic containing leucite crystals, comprising the steps of: mixing (1) a glassy material comprising 53 to 65 wt. % of SiO2, 13 to 23 wt. % of Al2O3, 9 to 20 wt. % of K2O and 6 to 12 wt. % of Na2O and (2) synthetic leucite seed crystals comprising 53 to 64 wt. % of SiO2, 19 to 27 wt. % of Al2O3 and 17 to 25 wt. % of K2O, and heat-treating the mixture at 750 to 950° C. for 1 to 5 hours; and a dental porcelain powder and a metal-ceramic restoration both comprising a glass-ceramic prepared by the method. The porcelain comprising the glass-ceramic prepared by the method is substantially free of opacification and decrease in the coefficient of thermal expansion, during fusion-bonding to a metal frame.

Abstract: A pressable dental ceramic comprising a mixture of glass and glass-ceramic frits. A refractory filler is also combined with the frits. The dental ceramic contains an amount of leucite less than about 35 percent by weight. Other additives may be included such as pigments, opacifying agents and fluorescing agents. The dental ceramic comprises a cellular-like microstructure comprised of glassy regions surrounded by clusters of leucite crystals distributed around those glassy regions forming a cellular three-dimensional network.

Abstract: A spark plug retains a resistor and has formed on alumina-based insulator a glaze layer, in which the glaze layer contains Pb component in a content of 1 mol % or less in terms of PbO, contains Si component, B component, Zn component, Al component, Ba component and/or Sr component, and contains F component in a content of 1 mol % or less. In addition, the glaze layer contains one kind or more of alkaline metal components, with Li component being necessary, and further contains one kind or more of phosphate ion, sulfate ion, fluoride ion and chloride ion in a content of 0.5 to 10 mol %. The glaze layer has a Vickers hardness Hv of 100 or more, shows excellent strength, especially impact resistance in spite of a reduced content of Pb component.

Abstract: A glass or glass powder is fused from a starting mixture containing approximately 38 wt % to 48 wt % SO2, 15 wt % to 19 wt % Al2O3, 4.5 wt % to 11 wt % TiO2, 0 wt % to 1.5 wt % Na2O, 0 wt % to 1.5 wt % K2O and 23 wt % to 30 wt % CaO. In addition, a glass powder mixture includes two glass powders, a carbon black powder and an organic binder, the first glass powder having a mean particle size of approximately 150 &mgr;m to 250 &mgr;m, the second glass powder having a mean particle size of less than approximately 100 &mgr;m, which may be 10 &mgr;m to 70 &mgr;m. The glass or glass powder mixture is suitable for producing a glass ceramic, such as that used as a resistor seal and/or a gas-tight glass ceramic solder in a spark plug.

Abstract: A new lead-free glass flux suitable for the decoration of ceramic materials comprises SiO2, Al2O3, B2O3 and Li2O as essential components. The lead-free glass flux is a glass mixture in which a glass composition having a relatively low coefficient of thermal expansion and a glass composition having a relatively high coefficient of thermal expansion and a relatively high chemical resistance are mixed at an appropriate ratio.

Abstract: The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO2—SiO2—MeIIO, or (II) SiO2—MeIIIO2—MeIIO, wherein: MeII is chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; MeIII is chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.

Abstract: The porcelain of the present invention comprises 5 to 70% by weight of a non-oxide ceramic filler and 30 to 95% by weight of a borosilicate glass having a glass transition temperature of 800° C. or lower, wherein a weight loss per unit surface area of said non-oxide ceramics is not more than 0.15 g/cm2 after dipping said non-oxide ceramic having purity of not less than 96% by weight for five minutes in a glass melt obtained by melting said borosilicate glass with heating at 1200° C. Since the porcelain composition can be fired at a low temperature together with a low-resistance metal, the resulting porcelain has a high thermal conductivity, a low dielectric constant, a high heat dissipation property and a reduced apparent signal delay in a high frequency signal and is suited for use as an insulating board in a wiring board.

Abstract: Low temperature melting lead-free glass and enamel compositions are provided which have low boron content and possess high durability properties. Enamel pastes containing frits of the glass compositions are particularly useful in forming colored borders in automotive glass.

Abstract: The invention relates to glass ionomer for enhancing mineralization of hard tissue of mammals. The glass ionomer comprises, a inert biocompatible ceramic and a bioactive ceramic. The invention also relates to a method for enhancing mineralization of hard tissue of mammals with the aid of said glass ionomer. The invention further relates to the use of said glass ionomer for the preparation of products intended for treatment of defects of soft and hard tissue as well as the use of said glass ionomer for the preparation of a variety of products wherein the ability to enhance mineralization is advantageous.

Abstract: New decorating materials suitable for the decoration of ceramic materials comprise a lead-free glass flux and at least one pigment. The glass flux comprises two lead-free glass compositions. One of the two glass compositions comprises, in weight percent, SiO2: 45 to 60%, Al2O3: 5 to 20%, B2O3: 15 to 30%, and one or more alkali metal oxides: 5 to 10%, provided that Li2O is contained in an amount of 2% or more, with the proviso that the total amount of said oxides is 90% or more of the total weight of the composition. The other of the two glass compositions comprises, in weight percent, SiO2: 60 to 75%, Al203: 5 to 20%, at least one of MgO, CaO, ZnO: 5 to 20% in total, and one or more alkali metal oxides: 0.5 to 5%, provided that Li2O is contained in an amount of 0.5% or more, with the provisothat the total amount of said oxides is 90% or more of the total weight of the composition.

Abstract: The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO2—SiO2—MeIIO, or (II) SiO2—MeIIIO2—MeIIO, wherein: MeII is chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; MeIII is chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.

Abstract: The present invention provides a ceramic color composition which comprises, as a solid powder, 50 to 90 wt. % of a mixture containing 5 to 95 parts by weight of a first lead-free glass powder comprising at least SiO2, ZnO, and B2O3 as glass components, and 5 to 95 parts by weight of a second lead-free glass powder comprising at least SiO2, Bi2O3, and B2O3 as glass components, 10 to 40 wt. % of an inorganic pigment, and 0 to 10 wt. %0 of an inorganic filler.

Abstract: Materials for making a plasma display having a transparent front panel spaced from a back panel which is a metal core having layers of a dielectric material extending over and bonded to the core. The materials of which the back panel is made are chosen to form a back panel having a thermal coefficient of expansion compatible with that of the front panel. The dielectric material is made from a green ceramic tape which is bonded to the core and cofired with the core to form the back panel. The materials for the dielectric can be chosen such that the composite TCE of the cofired assembly matches the TCE of the front panel.

Abstract: The present invention is a glass-ceramic material and method of making useful for joining a solid ceramic component and at least one other solid component. The material is a blend of M1-M2-M3, wherein M1 is BaO, SrO, CaO, MgO, or combinations thereof, M2 is Al2O3, present in the blend in an amount from 2 to 15 mol %, M3 is SiO2 with up to 50 mol % B2O3 that substantially matches a coefficient of thermal expansion of the solid electrolyte. According to the present invention, a series of glass ceramics in the M1-Al2O3-M3 system can be used to join or seal both tubular and planar solid oxide fuel cells, oxygen electrolyzers, and membrane reactors for the production of syngas, commodity chemicals and other products.