A scaling resistant ceramic glaze and a functional overglaze for Q345 hot rolled alloy steel double sided enameling. The components and the weight percentage of each component of the ground glaze of the enamel are as follows: 3-6% of Al.sub.2O.sub.3, 60-70% of SiO.sub.2; 10-15% of B.sub.2O.sub.3, 10-15% of Na.sub.2O+K.sub.2O+Li.sub.2O, 3-6% of CaF.sub.2, 3-6% of ZrO.sub.2, 2-5% of CoO+NiO, 1-3% of BaMoO.sub.4+Sb.sub.2O.sub.3, 0.3-1.5 of WO.sub.3. The ground glaze is prepared by formulating chemical raw materials in a weight ratio converted by the described chemical composition, stirring thoroughly and mixing uniformly, melting same in a rotary furnace at 1200-1350 C., and then quenching the melt. The provided scaling resistant ceramic glaze and functional overglaze for Q345 hot rolled alloy steel double sided enameling can be applied to Q345 steel that contains C, P, S and the like which are considered harmful elements and contains a variety of common alloy elements.

A glass composition, a cooking appliance having a glass composition, and a method of forming a glass composition may include a glass frit including 15 wt. % to 50 wt. % silicon dioxide (SiO.sub.2), 10 wt. % to 30 wt. % of diboron trioxide (B.sub.2O.sub.3), 5 wt. % to 35 wt. % of zinc oxide (ZnO), and 10 wt. % to 30 wt. % of an I-group oxide. The glass frit may further include at least one of aluminum oxide (A1.sub.20.sub.3), zirconium dioxide (ZrO.sub.2), or titanium dioxide (TiO.sub.2) by about 0.1 wt. % to 5 wt. %; at least one of sodium fluoride (NaF) or aluminum trifluoride (AIF.sub.3) by about 1 wt. % to 5 wt. %; and at least one of cobalt(II) dicobalt(III) oxide (Co.sub.3O.sub.4), nickel(II) oxide (NiO), iron(III) oxide (Fe.sub.2O.sub.3), or manganese(IV) oxide (MnO.sub.2) by about 1 wt. % to 6 wt. %. The I-group oxide may include at least one of lithium oxide (Li.sub.2O), sodium oxide (Na.sub.2O), or potassium oxide (K.sub.2O).

A glass composition includes a glass frit and an electrostatic force reinforcing material including polymethylhydrosiloxane derivatives. The electrostatic force reinforcing material is represented by the following Formula.

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The invention is in the field of vitreous enamel coatings, more particularly vitreous enamel coatings for steels. The invention provides a process for obtaining adhering light-coloured coatings in a single layer system, hereinafter referred to as Pyro Light coatings, that can be applied to the steel by powder electrostatic spraying.

A glass composition formed of a glass frit including P.sub.2O.sub.5, SiO.sub.2, B.sub.2O.sub.3, Al.sub.2O.sub.3, ZrO.sub.2 and group I-based oxide, wherein P.sub.2O.sub.5 is contained in an amount of 20 wt % to 40 wt % based on a total weight of the glass frit, SiO.sub.2 is contained in an amount of to wt % to 30 wt % based on the total weight of the glass frit, B.sub.2O.sub.3 is contained in an amount of 3 wt % to 20 wt % based on the total weight of the glass frit, Al.sub.2O.sub.3 is contained in an amount of 7 to 24 wt % based on the total weight of the glass frit, ZrO.sub.2 is contained in an amount of 1 wt % to 7 wt % based on the total weight of the glass frit, and the group I-based oxide is contained in an amount of 7 wt % to 28 wt % based on the total weight of the glass frit.

A glass composition formed of glass frit including P.sub.2O.sub.5, TiO.sub.2 and group I-based oxide, wherein P.sub.2O.sub.5 is contained in an amount of 20 wt % to 30 wt % based on a total weight of the glass frit, wherein TiO.sub.2 is contained in an amount of 10 wt % to 20 wt % based on the total weight of the glass frit, and wherein the group I-based oxide is contained in an amount of 15 wt % to 30 wt % based on the total weight of the glass frit.

Method for producing a metal coated steel substrate provided with a coating of a primer composition, comprising applying a layer of the primer composition on the metal coated steel substrate wherein the primer composition comprises basic components selected from the group consisting of CuO, K.sub.20, Li.sub.20, Na.sub.20, Ce0.sub.2 and ZnO; components with intermediate acidity selected from the group consisting of Al.sub.20.sub.3, B.sub.20.sub.3, Cr.sub.20.sub.3, Sn0.sub.2 Sb.sub.20.sub.3 and Fe.sub.20.sub.3; acidic components selected from the group consisting of Mn0.sub.2, Mo0.sub.3, P.sub.20.sub.5, Si0.sub.2, Ti0.sub.2, V.sub.20.sub.5, W0.sub.3 and Zr0.sub.2; wherein all wt. % are drawn on the total primer composition and the total sum of the amounts excluding impurities and after normalization is 100 wt. %, wherein all components are expressed as oxides, wherein the sum of the amounts of Ce0.sub.2+Cr.sub.20.sub.3+CuO+Fe.sub.20.sub.3+Mn0.sub.2+Mo0.sub.3+Sn0.sub.2+Sb.sub.20.sub.3+V.sub.20.sub.5 W0.sub.3 is between about 16.7 and about 48.6 wt. %.

A ceramic composition for coating metallic surfaces, a method and a resulting ceramic layer, which layer refers to a ceramic composition which, after deposition, is subjected to a thermal treatment to generate a ceramic layer. The resulting ceramic layer displays, among other characteristics, appropriate adhesion to the metallic surface and remains stable at temperatures between 750 C. and 950 C.

A preparation method for a metal matrix composite wire includes the following steps: 1) preparing a metal inner core; 2) preparing a glass-resin mixture; 3) dissolving self-adhesive resin in the solvent to prepare a self-adhesive resin solution; 4) uniformly coating the glass-resin mixture on a surface of the metal inner core, then coating the self-adhesive resin solution on a surface of the glass-resin mixture, and performing drying at a temperature of 80 C. to 150 C.; and 5) repeating the step 4) until a thickness of the coating reaches 2 to 10 m. When an inductor is prepared by using the composite wire, the inductor may have relatively good weather resistance, a relatively good dielectric voltage-withstand capability, as well as relatively good high-temperature resistance and electrical performance.

The present invention relates to an inorganic adhesive composition and to a hermetic sealing method, and more specifically relates to an inorganic adhesive composition with which an organic solvent is not used and to a hermetic sealing method using same. To this end, the present invention provides an inorganic adhesive composition comprising: between 20 and 80 parts by weight of a water glass diluted solution containing between 60 and 90 parts by weight of water glass (Na2SiO2); between 20 and 80 parts by weight of a refractory inorganic filler; and a black pigment.