3results about How to "Good glass performance" patented technology

The invention relates to the technical field of metal casting, in particular to casting powder for continuous casting of a high-carbon steel slab and a continuous casting method. The casting powder comprises the following components in parts by weight: 15-50 parts of a pre-melting material, 10-30 parts of wollastonite, 3-10 parts of quartz, 3-8 parts of albite, 2-5 parts of magnesia, 2-4 parts of borax, 10-15 parts of sodium carbonate, 1-3 parts of lithium carbonate, 1-2 parts of bentonite, 4-8 parts of graphite, 1-3 parts of an adhesive and 1-4 parts of isopropyl trioleate acyloxy titanate. The invention also provides a preparation method of the composition. Compared with the prior art, the prepared casting powder has the advantages of being free of fluorine, environmentally friendly, good in melting performance and the like.

This invention provides a full-spectrum chalcogenide optical glass, its preparation method, and optical elements. The chalcogenide optical glass comprises, by molar percentage: S: 53–67 mol%, preferably 54–66 mol%; Ga: 6–23 mol%, preferably 8–20 mol%; Sb: 6–28 mol%, preferably 10–24 mol%; CsX: 0–18 mol%, preferably 4–16 mol%, wherein X in CsX represents a halogen, preferably Cl, Br, or I. The chalcogenide optical glass provided by this invention has a transmittance range covering 0.5–14.5 μm, with a transmittance of over 58% in the 8–12 μm range, covering four atmospheric windows: visible, near-infrared, mid-infrared, and far-infrared. It exhibits good glass-forming properties and chemical stability, broadening its applications in three-spectrum full-spectrum imaging, detection, and sensing.

The invention discloses a strontium titanate ceramic low-temperature brazing connection method, and particularly relates to the field of ceramic brazing. The preparation method of the glass powder comprises the following steps: mixing the V2O5 powder, the B2O3 powder, the Al2O3 powder and the CaO powder according to the mass fraction to obtain mixed powder; and heating the mixed powder to obtain molten glass, and preparing the molten glass into glass powder. Mixing the glass powder with a binder to obtain the glass soldering paste; the to-be-welded face of the strontium titanate ceramic is coated with the glass soldering paste, and the to-be-welded strontium titanate ceramic is obtained; two strontium titanate ceramics to be welded are placed in a laminated mode, and a strontium titanate ceramic-glass soldering paste-strontium titanate ceramic sandwich structure is obtained to serve as a piece to be welded; and heating the to-be-welded part to obtain the brazed strontium titanate ceramic. The vanadate glass powder serves as brazing filler metal, the thermal expansion coefficient of the vanadate glass powder is matched with that of strontium titanate ceramic, the brazing temperature is low, and therefore the residual stress of a connector can be effectively reduced, and the strength of the connector is improved.