1921 results about "Boron oxide" patented technology

Methods for forming boron-containing films are provided. The methods include introducing a boron-containing precursor and a nitrogen or oxygen-containing precursor into a chamber and forming a boron nitride or boron oxide film on a substrate in the chamber. In one aspect, the method includes depositing a boron-containing film and then exposing the boron-containing film to the nitrogen-containing or oxygen-containing precursor to incorporate nitrogen or oxygen into the film. The deposition of the boron-containing film and exposure of the film to the precursor may be performed for multiple cycles to obtain a desired thickness of the film. In another aspect, the method includes reacting the boron-containing precursor and the nitrogen-containing or oxygen-containing precursor to chemically vapor deposit the boron nitride or boron oxide film.

The present invention provides a thick-film paste for printing the front side of a solar cell device having one or more insulating layers. The thick-film paste comprises an electrically conductive metal and a lead-tellurium-boron-oxide dispersed in an organic medium.

A protected polymeric film comprises a polymeric film substrate having a first major surface and a second major surface opposite the first major surface, and a protective structure provided on at least the first major surface of the substrate, wherein the protective structure comprises a layer of boron oxide and an inorganic barrier layer. A protective structure may also be provided on the second major surface of the substrate. Organic electronic components may be formed on or attached to the protected polymeric films.

A frit composition useful for sealing a light emitting device is disclosed. The frit composition comprises a glass portion comprising a base component and at least one absorbing component. The glass portion of the frit comprises silica, boron oxide, optionally alumina, and (a) cupric oxide and/or a (b) combination of ferric oxide, vanadium pentoxide, and optionally titanium dioxide. Also disclosed is an article comprising a substrate and a frit, and a glass package comprising two substrates and a frit positioned between the substrates. A method for manufacturing a hermetically sealed glass package comprising the deposition of a glass frit and heating of the glass frit to form a hermetic seal is also disclosed.

Improved glass compositions for glass fibers typically useful for fire resistant blankets or containers to provide high burn-through resistance at temperatures of 2,300° F. and typically comprising 10.23% to 81.81% silica, 2.0% to 26.00% alumina, 3.0% to 15.0% calcium oxide, 0% to 10.50% magnesium oxide, 1.0% to 18.0% ferrous+ferric oxide, and 0% to 4.0% titanium dioxide; the improved glass compositions may include 0% to 9% lithium oxide, 0% to 9% boron oxide, 0% to 6.0% manganese oxide, and 0% to 4.0% phosphorous oxide.

A coating admixture, method of coating and substrates coated thereby, wherein the coating contains colloidal silica, colloidal alumina, or combinations thereof; a filler such as silicon dioxide, aluminum oxide, titanium dioxide, magnesium oxide, calcium oxide and boron oxide; and one or more emissivity agents such as silicon hexaboride, carbon tetraboride, silicon tetraboride, silicon carbide, molybdenum disilicide, tungsten disilicide, zirconium diboride, cupric chromite, or metallic oxides such as iron oxides, magnesium oxides, manganese oxides, chromium oxides, copper chromium oxides, cerium oxides, terbium oxides, and derivatives thereof. In a coating solution, an admixture of the coating contains water. A stabilizer such as bentonite, kaolin, magnesium alumina silicon clay, tabular alumina and stabilized zirconium oxide is also added.

A solid-state detector for detection of neutron and alpha particles detector and methods for manufacturing and use thereof are described. The detector has an active region formed of a polycrystalline semiconductor compound comprising a particulate semiconductor material sensitive to neutron and alpha particles radiation imbedded in a binder. The particulate semiconductor material contains at least one element sensitive to neutron and alpha particles radiation, selected from a group including 10Boron, 6Lithium, 113Cadmium, 157Gadolinium and 199Mercury. The semiconductor compound is sandwiched between an electrode assembly configured to detect the neutron and alpha particles interacting with the bulk of the active region. The binder can be either an organic polymer binder or inorganic binder. The organic polymer binder comprises at least one polymer that can be selected from the group comprising polystyrene, polypropylene, Humiseal™ and Nylon-6. The inorganic binder can be selected from B2O3, PbO/B2O3/, Bi2O3/PbO, Borax glass, Bismuth Borate glass and Boron Oxide based glass.

When a glass melt of an optical glass having a refractive index (nd) of at least 1.7 and an Abbe number (νd) of 28 to 41 is flowed down from a flow pipe made of Pt or a Pt alloy to form glass gobs continuously, there is caused a problem that the glass gobs have striae or that the weight variability among the glass gobs is large, and the problem can be overcome by the use of an optical glass comprising silicon oxide and boron oxide, the ratio of a content of the silicon oxide to a content of the boron oxide being greater than 0.78, the optical glass having a contact angle of at least 40° to Pt or a Pt alloy at a predetermined temperature equivalent to, or higher than, its liquidus temperature or in a predetermined temperature range whose lower limit is equivalent to, or higher than, the liquidus temperature and having a sag temperature Ts of 580° C. or lower.

A sintering aid for a low-temperature cofired medium ceramic material is composed of, by weight, 31%-45% of silicon dioxide, 1%-10% of boron oxide, 5.1%-10% of zinc oxide, 18%-30% of aluminum oxide, 11%-24% of alkaline earth metallic oxide and 5%-15% of oxide with the general formula of R2O3, wherein R refers to at least one of lanthanum, cerium, praseodymium, neodymium, samarium, europium and dysprosium, and the alkaline earth metallic oxide refers to one of magnesium oxide, calcium oxide, barium oxide and strontium oxide. Adding the sintering aid into the low-temperature cofired medium ceramic material enables the prepared low-temperature cofired medium ceramic to have excellent thermal mechanical performance and dielectric performance. In addition, the invention provides the low-temperature cofired medium ceramic material and application thereof and a method for preparing the low-temperature cofired medium ceramic.

The invention relates to hollow glass microballoons and a production method thereof. The hollow glass microballoons are characterized by comprising the following raw materials in portion by weight: 75to 80 portions of silicon dioxide, 7 to 15 portions of boron oxide, 1 to 4 portions of aluminium oxide, 0.5 to 1.5 portions of calcium oxide, 0.8 to 1.2 portions of magnesium oxide, 5 to 6 portions of sodium oxide, 0.0 to 0.3 portion of sulfur trioxide and 0 to 0.05 portion of ferric oxide. The production method of the hollow glass microballoons comprises the following steps: compounding, melting, water quenching, drying, crushing, grading, hollow balling, collection and air separation, and is characterized in that the hollow balling comprises the following steps: ejecting a glass raw material, gas and combustion-supporting gas upwards from the bottom of a balling furnace for combustion, and cooling the glass microballoons upwards by a cooling device after melting under the action of a draft fan. The hollow glass microballoons have the advantages of good surface tension, high compression strength and chemical stability. The production method can better ensure material balling, and hassimple process, less equipment and good effect as much as possible.

A part made of a porous material containing carbon, in particular a C/C composite material, is protected against oxidation by being impregnated with a composition in an aqueous medium containing at least a phosphorous compound, elemental titanium, and boron or a boron compound other than titanium diboride, to form in the presence of oxygen and at least one alkali or alkaline-earth element M that catalyses oxidation of carbon, at least one P—O—Ti-M type association bonded by boron oxide B₂O₃ and trapping the element M.

Improved glass fibers compositions, typically useful for fire resistant blankets or containers to provide high burn-through resistance at high temperatures of 2,400° F. and higher, and typically comprising silica, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, ferrous+ferric oxide, and titanium oxide; the improved glass compositions may further include alumina, lithium oxide, and boron oxide.

A white cold light source uses an LED or a gas discharge lamp and a luminescent rare earth doped glass comprising multiple rare earth cations and a particularly high total rare earth content to generate white light emission. Preferably, the luminescent glass has a 2700K to 7000K black body temperature and color rendering index value exceeding 80. A first embodiment of the glass is composed primarily of P₂O₅, Al₂O₃, and alkaline earth and alkali metal oxides, and possesses other properties such as physical and thermal properties that are compatible with conventional melting, forming and other manufacturing steps. Other embodiments of the luminescent glass have a maximum water content of 0.1 wt-% and do not contain any boron. Also the luminescent glass is preferably free of water, boron oxides and nitrides. The luminescent glass can be used as a wavelength converter to produce bright white light emission when pumped by conventional commercially available blue and UV light emitting diode sources.

The invention relates to a light-weight, high temperature-resistance and heat-insulation ceramic fiber tile and a making method thereof. The heat insulation tile comprises ceramic fibers and boron oxide, wherein the ceramic fibers comprise quartz fibers, alumina fibers and yttrium oxide stabilized zirconia fibers. The making method of the light-weight, high temperature-resistance and heat-insulation ceramic fiber tile comprises the following steps: preparing a sintering aid suspension, preparing a ceramic fiber slurry, carrying out wet green body molding, drying the obtained wet green body, and carrying out pressurization sintering. The heat insulation tile has good heat insulation effect and mechanical performances, has light weight and resists high temperature; the density is controllable between 0.10g/cm<3> and 0.90g/cm<3>; the lowest apparent heat conduction coefficient at room temperature reaches 0.033W/(m.K); the compressive strength at room temperature is greater than 3.0Mpa; and the long-time use temperature can reach 1350DEG C.

A tellurite-based glass composition for use in EDFAs exhibits higher phonon energy without sacrificing optical, thermal or chemical durability properties. The introduction of boron oxide (B₂O₃) into the Er³⁺-doped tellurite glasses increases the phonon energy from typically 785 cm⁻¹ up to 1335 cm⁻¹. The inclusion of additional glass components such as Al₂O₃ has been shown to enhance the thermal stability and particularly the chemical durability of the boro-tellurite glasses. Er:Yb codoping of the glass does further enhance its gain characteristics.

An organic light emitting diode device comprises a substrate (1), a layer (3) of organic, preferably polymeric, light emitting material, and a transparent cathode (4) comprising a layer of material with a work function less than 4 eV. The device has a passivation layer (5) comprising boron oxide.

A coating, method of coating and substrates coated thereby, wherein the coating contains an inorganic adhesive such as an alkali/alkaline earth metal silicate such as sodium silicate, potassium silicate, calcium silicate, and magnesium silicate; a filler such as a metal oxide for example silicon dioxide, aluminum oxide, titanium dioxide, magnesium oxide, calcium oxide and boron oxide; and one or more emissivity agents such as silicon hexaboride, carbon tetraboride, silicon tetraboride, silicon carbide, molybdenum disilicide, tungsten disilicide, zirconium diboride, cupric chromite, or metallic oxides such as iron oxides, magnesium oxides, manganese oxides, chromium oxides and copper chromium oxides, and derivatives thereof. In a coating solution, an admixture of the coating contains water. A stabilizer such as bentonite, kaolin, magnesium alumina silicon clay, tabular alumina and stabilized zirconium oxide may be added.

The invention discloses a method for coating a high-nickel ternary material with aluminum oxide and boron oxide. The method includes the steps: 1) mixing an aluminum oxide precursor and water to prepare aluminum oxide coating liquid; 2) mixing the high-nickel ternary material with the aluminum oxide coating liquid to obtain aluminum oxide coating turbid liquid; 3) performing solid-liquid separation on the aluminum oxide coating turbid liquid, and drying obtained solid materials to obtain dry materials; 4) mixing the dry materials and a boron-containing compound and then sintering the dry materials and the boron-containing compound to obtain the finished high-nickel ternary material coated with the aluminum oxide and the boron oxide. According to the treatment method, washing and coating are combined, surface impurities of the high-nickel ternary material can be more effectively removed, coating is performed in a water phase, a coating can more uniformly cover the surface of the material, and further a positive electrode material with a good electrical performance is obtained. According to the coating method, process steps can be simplified, tempering temperature is reduced, tempering time is shortened, production cycle can be shortened, and production cost is saved.

The invention discloses a high thermal conductivity cast aluminium alloy and a preparation method thereof. The high thermal conductivity cast aluminium alloy comprises the following components by weight percent: 5.0-7.5% of silicone, 0.25-0.5% of magnesium, 0.01-0.06% of boron, 0.005-0.02% of titanium, 0.005-0.02% of zirconium, less than 0.2% of iron, less than 0.2% of copper, less than 0.1% of manganese, less than 0.1% of zinc, no more than 0.3% of all the other impurities and the balance of aluminium. The preparation method comprises that boron oxide is taken as a modificator, and then titanium and zirconium elements are added, thus a cast aluminium alloy with thermal conductivity as high as 210W/(m.K) can be prepared. The high thermal conductivity cast aluminium alloy has the advantages that thermal conductivity of a Al7SiMg cast aluminium alloy is obviously improved on the basis of the existing good casting property, mechanical property and thermal treatment property, and an industrial application range of the Al7SiMg cast aluminium alloy is expanded.