752 results about "Glass-ceramic" patented technology

The application discloses a transparent strengthened glass ceramic with high stress depth, which contains spinel crystals and zirconia crystals in a crystal phase of the strengthened glass ceramic, and does not contain Li-containing crystals; the strengthened glass ceramic has a compressive stress region extending from a surface thereof to a compression depth, a compressive stress layer depth DOL_0 of the strengthened glass ceramic is greater than or equal to 14% of a thickness of the strengthened glass ceramic, and a tensile stress line density of the strengthened glass ceramic is greater than or equal to 25000 MPa / mm. By introducing more Li ions and Na ions into a spinel glass ceramic component, the prepared transparent spinel glass ceramic can be chemically strengthened, a transparent strengthened glass ceramic with high CS, DOL_0, CT_AV and CT_LD is obtained, and the strengthened glass ceramic exhibits excellent drop resistance.

Devices, apparatuses, and methods are disclosed that include a glass or glass ceramic substrate with a bleached region and an unbleached region. Examples include a substrate with a region that transmits IR wavelength light, and a region that is substantially opaque to IR light. Examples include additional opacity in some or all regions to visible wavelength light and / or UV wavelength light.

Solid electrolyte compositions and solid-state batteries are disclosed, which comprise a solid electrolyte layer including a sulfide-containing solid-state electrolyte material and a compound of Chemical Formula 1. The sulfide-containing solid-state electrolyte material includes but is not limited to Li6PS5Cl (“LPSC”), an LPS-based glass or glass ceramic of formula xLi2S·yP2S5, wherein x+y=1, or an argyrodite-based sulfide-based solid electrolyte or formula Li6PS5X, wherein X═Cl, Br, or I) or Li6-yPS5-yCl1+y, where y is <1. In some aspects, the compound of Chemical Formula 1 is sodium 3-mercapto-1-propanesulfonate (3M1P).

A method for manufacturing a lithium disilicate glass ceramic with gradient properties by using photocuring additive manufacturing, the method comprising: performing wet mixing on a basic glass powder with a solvent, ball milling same until uniformity, drying same, then performing thermal treatment to reach a molten state, then quenching same to form original particles, and then granulating same to obtain lithium disilicate ceramic particles; respectively preparing n groups of pastes with gradually-changing colors and translucencies from n groups of the lithium disilicate ceramic particles, said paste preparation comprising: adding 3Y-TZP powder, a coloring agent and lithium disilicate ceramic particles to a resin mixture, mixing same, rolling same and performing vacuum defoaming to obtain a paste; adding the n groups of pastes in sequence into an additive manufacturing device to undergo photocuring forming, so as to obtain a green body; after the green body is cleaned and dried, degreasing the green body, and sintering same; and finally under a vacuum high-temperature condition, subjecting the sintered sample to an ion exchange reaction with a molten nitrate in a flowing state, so as to obtain a product.

The invention discloses a multiphase coexisting high-entropy glass ceramic material and a preparation method thereof, and the method comprises the following steps: step 1, uniformly mixing Na2CO3, K2CO3, BaCO3, SrCO3, CaCO3, Bi2O3, TiO2, Nb2O5 and SiO2 to obtain a mixture A; 2, the mixture A is added into a crucible preheated to 1200 DEG C, then the temperature is increased to 1450 DEG C, heat preservation is conducted to enable the mixture A to be completely molten till no bubble is generated, a melt is obtained, then the melt is poured into a mold preheated to 300 DEG C, and a product B is obtained after forming; 3, transferring the product B to an annealing furnace which is heated to 500-600 DEG C in advance, preserving heat, and cooling along with the furnace to obtain a glass sample; and step 4, putting the glass sample into a muffle furnace, heating from room temperature to 850-950 DEG C at a heating rate of 5 DEG C / min, preserving heat, crystallizing the glass sample, and cooling along with the furnace to obtain the multi-phase coexisting high-entropy glass ceramic material. The preparation method is simple in process, and the prepared high-entropy glass ceramic has high breakdown strength and excellent energy storage density and energy storage efficiency.

The invention belongs to the technical field of sealants, and particularly relates to a heat-conducting flame-retardant sealant for a power battery and a preparation method thereof.The heat-conducting flame-retardant sealant for the power battery is prepared through collaborative design of a composite heat-conducting filler and a polyglutamic acid-melamine cyanurate-calcium hydrophosphate composite flame retardant and combination of magnetic field dispersion, ultrasonic blending and silane coupling agent interface optimization technologies; the heat-conducting and flame-retardant properties of the material are obviously improved. A lithium silicate glass ceramic precursor is subjected to surface modification through phosphorus oxychloride, the combination of a reinforcing filler and a matrix is enhanced, a flexible cross-linked network is constructed by amino-terminated polyether and an isocyanate curing agent, and the mechanical strength and thermal stability are guaranteed. The sealant inhibits combustion propagation and reduces toxic gas release through a multi-stage reaction mechanism during thermal runaway, meanwhile, the sealant adapts to high-frequency vibration and thermal cycle working conditions of a battery module, and the preparation process realizes synergistic enhancement of heat conduction and flame retardance through gradient stirring, vacuum defoaming and filler uniform dispersion technologies.

The invention discloses fluorescent glass ceramic, a preparation method thereof and a luminescent device, and belongs to the technical field of luminescent materials. The fluorescent glass ceramic comprises glass powder and fluorescent powder, the glass powder comprises zinc borosilicate glass powder; the zinc borosilicate glass powder comprises the following components in percentage by mole: 5%-20% of SiO2, 10%-35% of B2O3, 20%-65% of ZnO, 0.3%-15% of P2O5, 2%-20% of RO and 0.1%-15% of R2O, RO is selected from at least one of MgO, CaO, SrO and BaO, and R2O is selected from at least one of Li2O, Na2O and K2O; the fluorescent powder comprises blue-green fluorescent powder; the emission peak wavelength of the blue-green fluorescent powder is 480-510 nm; based on the total mass of the glass powder and the fluorescent powder, the mass percentage content of the glass powder is 30-80%, and the mass percentage content of the fluorescent powder is 20-70%. The fluorescent glass ceramic is high in reliability and can be applied to high-power light emitting, a light emitting device formed by combining the fluorescent glass ceramic and a proper light source can provide an accurate azure light emitting effect, and the requirements in application scenes with harsh color requirements are met.

The embodiment of the invention provides a glass ceramic sulfide electrolyte as well as a preparation method and application thereof, and relates to the technical field of batteries. In the preparation method, Li2S, P2S5, WO3 and LiI are mixed in an inert gas environment to obtain precursor powder, then the precursor powder is subjected to amorphization treatment to obtain a solid electrolyte powder precursor, finally the solid electrolyte powder precursor is sintered in the inert gas environment to obtain the glass ceramic sulfide electrolyte # imgabs0 #, x is larger than or equal to 0.001 and smaller than or equal to 0.2, and 1t is larger than or equal to 0.001. Yt; Yt; and 0.9. Through the preparation method, the prepared glass ceramic sulfide electrolyte has low Young modulus, high ionic conductivity and good interface stability, and meets the requirements of low circulating pressure and low preparation pressure of an all-solid-state battery.

The present invention provides a glass ceramic and a glass ceramic product having excellent mechanical properties. The microcrystalline glass product comprises the following components in percentage by weight: 40-55% of SiO2; 15 to 30 percent of Al2O3; 0.1 to 6 percent of Li2O; 9% to 19% of ZnO; 0.1 to 6 percent of MgO; and 0.5 to 7 percent of TiO2. Through reasonable component design, the obtained microcrystalline glass product has excellent mechanical properties and is suitable for display equipment or electronic equipment.

The invention discloses a toughened glass ceramic and a preparation method thereof, and relates to the technical field of glass ceramics, and the toughened glass ceramic comprises the following components in percentage by weight: 64 to 68 weight percent of silicon dioxide, 22.67 to 26.5 weight percent of lithium oxide, 0.9 to 1.2 weight percent of antibacterial agent, 0.8 to 1.1 weight percent of modified mica powder, 1.98 to 2 weight percent of aluminum oxide, 1.78 to 1.8 weight percent of potassium oxide, 1.68 to 1.7 weight percent of zirconium dioxide, 1.19 to 1.2 weight percent of phosphorus pentoxide and 1 to 3 weight percent of calcium fluoride. According to the toughened glass ceramic and the preparation method thereof, a multi-scale anti-cracking network is formed through macroscopic crack deflection of mica and nanoscale phase change toughening of zirconium oxide, the fracture toughness is remarkably improved, zirconium oxide agglomeration can be reduced through interface optimization of modified mica powder, zirconium oxide is dispersed more uniformly, and the phase change potential is further exerted; due to high-temperature stability of aluminum oxide, antibacterial agent particles can be wrapped, and excessive volatilization or aggregation of the antibacterial agent particles in the sintering process is prevented; aluminum oxide is used as a'protective shell 'to delay the Cu < 2 + > release rate and realize long-acting antibiosis.

The present invention relates to crystallized glass which has a crystalline phase and contains, in molar percentages in terms of oxides, 55-72% of SiO2, 1.3-4.5% of Al2O3, 15-28% of Li2O, 0.5-5.0% of P2O5, and 0.5-4.4% of ZrO2, wherein: with respect to the total of SiO2, Al2O3, and Li2O, the ratio of SiO2 is 68.5-76.0%, the ratio of Al2O3 is 2.20-4.40%, and the ratio of Li2O is 23.0-28.5%; the content ratio of Li2Si2O5 crystal is 40 mass% or more; and the Poisson's ratio is 0.20 or more.

The invention provides an arc-shaped microcrystalline glass plate structure performance detection system, and belongs to the technical field of material performance testing. The system comprises a rack, a sample table, an impact mechanism, a swing rod, a swing part, a driving assembly and a medium taking and supplying assembly, the sample table is provided with an arc-shaped supporting surface and a medium cavity; the impact mechanism is positioned above the arc-shaped supporting surface; the swing rod is provided with a sliding channel. The bottom end of the swinging piece is used for driving the sample table to rotate; the driving assembly comprises a rotating output shaft, a transmission arm and a transmission sliding block which are connected in sequence, the rotating output shaft is connected to the rack and is parallel to the rotating shaft of the swing rod, and the transmission sliding block is contained in the sliding channel in a sliding mode; the medium taking and supplying assembly comprises a piston barrel and a piston rod, the piston barrel is fixedly connected with the swing rod and provided with a one-way inflow port and a one-way outflow port communicated with the medium cavity, a piston of the piston rod is slidably sealed with the piston barrel, and a rod body is in transmission connection with the transmission sliding block. The system can realize multi-position and variable-temperature detection, and the detection reliability is higher.

The present invention relates to a glass ceramic having a three-dimensional shape including plural R-shapes including a smallest R-shape whose average radius of curvature is 5.0×102 mm or less and a largest R-shape whose average radius of curvature is 1.0×103 mm or more, having a maximum value of retardations of 20 nm / mm or less, and having a haze value converted into a value corresponding to a thickness of 0.8 mm of 1.0% or less in the largest R-shape.

A transparent, chemically prestressable or chemically prestressed glass ceramic has a high transmittance, a low haze and a high crystal phase content of keatite solid solution. A method of making such a glass ceramic includes producing a silicate green glass with a melting process and subsequent hot shaping, temperature treating the silicate green glass with at least one nucleation step carried out in the temperature range of 690° C. to 850° C. for a period of 5 min to 72 h and at least one ceramization step carried out in the temperature range of 780° C. to 1100° C. for a period of 3 min to 150 h, and performing at least one ion exchange in an exchange bath at a temperature of the exchange bath between 370° C. and 500° C. for a period of between 2 hours and 50 hours.

The invention discloses a preparation method of a high-toughness low-conductivity anti-radiation thermal barrier coating. The invention belongs to the technical field of thermal barrier coating materials. Aiming at the problems of thermal expansion mismatch of a precious metal second phase, failure of a multilayer structure interface and insufficient toughness of a glass ceramic-based coating in an existing coating, the invention provides a composite gradient structure design. By introducing the glass ceramic intermediate layer and the gradient functional surface layer and combining plasma spraying and high-temperature sintering processes, the characteristics of high toughness, low heat conductivity, radiation resistance and high-temperature self-healing of the coating are realized. The method comprises the following specific steps: step 1, substrate pretreatment; step 2, bonding layer preparation; step 3, glass ceramic intermediate layer deposition; step 4, functional surface layer gradient spraying; the thermal conductivity of the obtained coating is lower than 0.8 W / (m.K), the bonding strength is larger than 35 MPa, the fracture toughness reaches 4.0 MPa.m < 1 / 2 >, the infrared reflectivity at the waveband of 0.3-10 microns is larger than 0.85, and microcrack self-healing can be achieved at the temperature of 1200 DEG C. The method is suitable for ultra-high-temperature service environments such as aero-engine turbine blades.

The invention discloses microcrystalline glass, a microcrystalline glass manufacturing method and a household appliance, and relates to the technical field of microcrystalline glass manufacturing, the surface roughness of the microcrystalline glass is greater than or equal to 0.8 [mu] m and less than or equal to 2.0 [mu] m, and the Mohs hardness of the microcrystalline glass is greater than or equal to 6.5 and less than or equal to 8.0. The microcrystalline glass provided by the invention can have better usability.

The invention relates to a method for smoothing a surface (2) of a substrate (1) made of a brittle, hard material, in particular glass or a glass ceramic, comprising: smoothing the surface (2) with a brush tool (3). The brush tool (3) can have diamond-coated filaments (4), which are preferably formed from an elastic material.

The invention discloses bacteriostatic and antibacterial lithium disilicate glass ceramic and a preparation method thereof. The bacteriostatic and antibacterial lithium disilicate glass ceramic comprises the following components in percentage by weight: 60-70% of lithium disilicate whiskers, 5-12% of a nucleating agent, 1-5% of aluminum oxide, 1-4% of calcium oxide, 5-10% of an antibacterial agent and 12-18% of fluorapatite, wherein the nucleating agent is formed by compounding phosphorus pentoxide and zirconium oxide, and the antibacterial agent is formed by compounding silver oxide and zinc oxide; the invention relates to the technical field of lithium disilicate glass ceramics. In the glass ceramic, silver ions can be combined with groups such as sulfydryl and amino in bacterial cells to interfere the metabolic process of bacteria and inactivate enzymes of the bacteria so as to inhibit growth and reproduction of the bacteria, and zinc ions can influence permeability of bacterial cell membranes and destroy physiological functions of the bacteria and cooperate with the silver ions to enhance the antibacterial effect of the glass ceramic.

The application provides a spinel glass ceramic and applications thereof. By having a specific composition and crystal phase structure, the spinel glass ceramic not only has high intrinsic strength, but also can ensure that the spinel glass ceramic has a desired stress structure after chemical strengthening treatment, especially an ultrahigh compressive stress layer depth and a large deep stress. The spinel glass ceramic can be used to prepare a strengthened spinel glass ceramic with high mechanical strength and damage resistance.

The invention belongs to the technical field of electronic ceramic substrate materials, and particularly relates to a preparation method of a microcrystalline glass composite silicon nitride ceramic substrate, which is prepared from the following raw materials: 1-5% of alpha-phase silicon nitride powder, 86-95% of beta-phase silicon nitride powder, 0.2-3% of metal silicon powder, 2.5-8% of glass powder and 1.3-8% of metal oxide. The preparation method comprises the following steps: S1, mixing and grinding raw materials to obtain ceramic slurry; s2, adding Arabic gum into the ceramic slurry as a binder, and carrying out spray granulation; granulation powder is obtained; s3, carrying out dry pressing molding and cold isostatic pressing treatment on the granulation powder to prepare a ceramic plate blank; and S4, sintering and crystallizing the ceramic plate blank. According to the invention, the glass ceramic powder is introduced as a sintering aid and a second phase, and the sintering temperature of the silicon nitride is obviously reduced from the conventional temperature of more than 1800 DEG C to 1500 DEG C by utilizing the liquid phase effect of the glass ceramic powder in the sintering process, so that two modes of air pressure sintering and normal pressure sintering can be used, and the energy consumption and the requirements on equipment are reduced.

The invention provides a glass / ceramic composite block luminescent material as well as a preparation method and application thereof, transparent glass glaze is applied to a SrAl2O4: Eu, Dy long-afterglow ceramic matrix, the transparent glass glaze forms a transparent glass layer to coat the surface of the SrAl2O4: Eu, Dy long-afterglow ceramic matrix through high-temperature sintering at 1180-1260 DEG C, and the glass / ceramic composite block luminescent material is prepared. The prepared glass / ceramic composite block luminescent material has excellent hydrolysis resistance and optical performance, can effectively solve the problem that SrAl2O4: Eu, Dy long-afterglow ceramic is easy to hydrolyze in a humid environment, and also has optical information storage capability, so that the application field of the glass / ceramic composite block luminescent material is further expanded, and the glass / ceramic composite block luminescent material has wide application prospects. The method has important technical value and application prospect.

The invention provides a thermal response glass ceramic repairing agent based on microcapsule packaging, a preparation method of the thermal response glass ceramic repairing agent, an application of the thermal response glass ceramic repairing agent in self-repairing of an SOFC electrolyte and a solid oxide fuel cell. The repairing agent comprises a nano-porous Al2O3 microcapsule and a glass ceramic repairing agent packaged in the nano-porous Al2O3 microcapsule, the glass ceramic repairing agent comprises a low-temperature flowing glass phase and an ionic conductive ceramic phase, when the electrolyte crack expands, the microcapsule is broken to release the repairing agent; the glass phase melts and flows at the running temperature of the SOFC to fill cracks, and then is crystallized to form MgAl2O4-CeO2 composite ceramic compatible with electrolyte, and a compact structure is recovered. Compared with the prior art, the repairing agent disclosed by the invention is compatible with an SOFC electrolyte material, can trigger repairing at an operating temperature, adopts a microcrack self-repairing technology which does not damage an electrode layer, can realize real-time repairing without shutdown, and can automatically trigger repairing after cracks are generated.

The invention belongs to the technical field of anti-rust coatings, and provides an anti-rust coating composition as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing a BiVO4 composite material with high thermal stability and an oxygen vacancy structure by adopting a hydrothermal method so as to enhance the thermal stress resistance and mechanical strength of the BiVO4 composite material; secondly, a phosphonitrile chloride polymer compound is prepared through an absolute ethyl alcohol dispersion polymerization method, so that the chemical corrosion resistance and the thermal stability of the coating are improved; then, phosphate reinforced glass ceramic is prepared, and the mechanical performance and the high temperature resistance of the coating are improved; finally, the functional materials are mixed with the modified resin and the phosphate coupling agent, the mixture is evenly dispersed through a three-roller grinding machine, the anti-corrosion coating composition is prepared, the coating shows excellent thermal stress resistance under the high-temperature condition, cracking, falling and corrosion of the coating can be effectively inhibited, the service life of the high-temperature transportation pipeline is prolonged, and the anti-corrosion performance of the high-temperature transportation pipeline is improved. The method is suitable for the high-temperature pipeline field.

The invention discloses an LTCC (Low Temperature Co-Fired Ceramic) material with a controllable shrinkage rate and a preparation method thereof. The material comprises microcrystalline glass A and a glass devitrification material B, wherein the glass devitrification material B is obtained by devitrifying microcrystalline glass C according to a specific temperature system. The glass ceramic A and the glass ceramic C have different softening temperatures. And accurately regulating and controlling the crystallization state of the glass crystallization material B by regulating and controlling the crystallization treatment temperature and / or crystallization treatment time of the microcrystalline glass C. The LTCC substrate prepared from the LTCC material can be co-fired with a silver conductor while ensuring sintering compactness and excellent high-frequency performance, and the sintering shrinkage rate is controllable in the range of 14%-18% on the X / Y axis.

The invention discloses a low-dielectric low-loss high-strength borosilicate glass ceramic composite material and a preparation method thereof, and belongs to the technical field of borosilicate glass ceramic composites.The low-dielectric low-loss high-strength borosilicate glass ceramic composite material is prepared from, by weight, 70% of low-alkali borosilicate glass ceramics with the low borosilicate ratio, 29% of Al2O3 and 1% of Bi2O3. The preparation method comprises the following steps: preparing low-alkali borosilicate glass ceramics with a high borosilicate ratio, melting the low-alkali borosilicate glass ceramics with the high borosilicate ratio and amorphous SiO2 at a set temperature to obtain the required low-alkali borosilicate glass ceramics with the low borosilicate ratio, and finally mixing and ball-milling the crushed and ground low-alkali borosilicate glass ceramics with Al2O3 and Bi2O3 to obtain the low-alkali borosilicate glass ceramics with the low borosilicate ratio. And finally, the borosilicate glass ceramic composite material is sintered at the temperature of 880-900 DEG C. The borosilicate microcrystalline glass ceramic composite material is low in dielectric, low in loss and high in strength.

The invention discloses bismuthate glass. The bismuthate glass is prepared from the following main raw materials: 50 to 83 weight percent of Bi2O3, 10 to 20 weight percent of B2O3, 3 to 10 weight percent of ZnO, 3 to 10 weight percent of SiO2 and 3 to 10 weight percent of Al2O3; 0-4wt% of TiO2 is added on the basis of the total weight of the main raw materials. The invention further discloses a coating based on the bismuthate glass. The reflection performance of the glass coating is remarkably improved, the radiation refrigeration effect of the glass ceramic coating is remarkably improved, and the glass ceramic coating has the radiation protection, insulation and anti-static effects.

The present application relates to the technical field of glass ceramics, and in particular, to a glass ceramic, a chemically strengthened glass ceramic, and uses thereof. The glass ceramic comprises lithium disilicate as a main crystal phase and has specific content ranges of oxides. On the basis of the content expressed as the molar percentage of each oxide in the composition of the glass ceramic, the composition of the glass ceramic satisfies 2.00≤SiO2 / Li2O≤2.40. The glass ceramic of the present application has high intrinsic strength and excellent optical performance, and can be chemically strengthened to obtain a chemically strengthened glass ceramic with high stress level and excellent deformation resistance.

The invention belongs to the technical field of oxide glass ceramic materials, and discloses nano-particle reinforced glass ceramic as well as a preparation method and application thereof. The nano-particle reinforced glass ceramic is prepared by the following steps: pressing mixed powder of oxide powder, nano-particles and a low-temperature melting aid to obtain a biscuit; and heating the biscuit to a molten state at 1200-2700 DEG C by adopting a suspension method, and cooling to obtain the product. The nano-particle reinforced glass ceramic has high hardness of more than or equal to 8GPa, high toughness of more than or equal to 6MPa * m < 1 / 2 >, high wear resistance, high drop resistance and the like, particularly has the pseudoplastic fracture characteristic and adjustable transparency, has the maximum visible light transmittance of 84%, and can be applied to the fields of intelligent equipment, ultrahigh-temperature glass or precision instruments and the like.

The invention discloses microcrystalline glass with excellent mechanical properties and weather resistance. Main crystalline phases of the microcrystalline glass are petalite and silicon lithium stone; the overall crystallinity of the microcrystalline glass is 85% or above; the mass fraction of Na2O on the surface of the microcrystalline is 1%-5%, the mass fraction of K2O is 1%-3%, the mass fraction ratio of Na2O to K2O is 1-3, and the microcrystalline glass is prepared through melting, heat treatment, slicing and two times of chemical strengthening. By designing a two-strong process with proper surface K2O and Na2O concentrations, the weatherability performance better than that in the prior art is obtained, and meanwhile, the performance of 4PB / ROR / falling ball / abrasive paper is improved to a certain extent.

The invention discloses oil shale waste / fly ash glass ceramics as well as a preparation method and application thereof, relates to the technical field of glass ceramics, and solves the problems that in the prior art, OSA post-treatment is serious in environmental harm and low in resource utilization rate, and when OSA is applied to glass ceramics preparation, the crystal phase structure is unstable, the process controllability is poor, and the production cost is high. And high quality, low cost and sustainable utilization of the microcrystalline glass are difficult to realize at the same time. The oil shale waste / fly ash glass ceramic is prepared from 80 parts of industrial waste residues, 4-6 parts of nucleating agent and 14-16 parts of auxiliary components, the industrial waste residue is composed of 50-75 parts of oil shale residue and 5-30 parts of fly ash; the preparation method comprises the following steps: mixing the oil shale waste with the fly ash, adding the nucleating agent and the auxiliary components, grinding, melting, preserving heat, pouring the melt into a mold, and annealing to obtain base glass; and carrying out polishing treatment and heat treatment on the base glass to obtain the microcrystalline glass. The invention can be applied to the fields of building decoration and electrical insulating materials.