307 results about "Fused quartz" patented technology

The invention relates to the technical field of ceramics, in particular to a preparation method of a heat-resistant ceramic marmite. The heat-resistant ceramic marmite is composed of a green body and a glaze surface, and the green body is prepared from, by weight, 30-35 parts of fused quartz, 8-10 parts of petalite, 9-11 parts of kaolin, 19-21 parts of washed illite clay, 5-7 parts of sepiolite, 5-6 parts of andalusite, 7-9 parts of coal gangue, 0.2-0.7 part of zinc spinel and 2-3 parts of talc; the glaze surface is prepared from the following raw materials in parts by weight: 18 to 20 parts of fused quartz, 14 to 16 parts of petalite, 12 to 14 parts of kaolin, 5 to 6 parts of calcium oxide, 1.5 to 2 parts of zinc oxide, 1 to 1.5 parts of strontium oxide, 8 to 10 parts of spodumene, 0.6 to 0.8 part of lanthanum oxide, 8 to 10 parts of ZrSiO4 coated Al2O3 and 1.2 to 1.8 parts of pigment. The prepared ceramic marmite has the advantages of matt appearance, higher thermal stability, low water absorption rate and excellent comprehensive performance, and is not easy to crack and wear.

The invention provides a visual detection method for interface water droplet induced electron generation in a high-temperature and high-pressure hydrocarbon-water system, and belongs to the technical field of in-situ analysis of electrons in mixed fluid. The detection method comprises the following steps: preparing a fused quartz capillary reaction cavity; loading a sample in a fused quartz capillary reaction cavity: sequentially inserting a thin capillary syringe filled with a silicomolybdic acid aqueous solution and a thin capillary syringe filled with a hydrocarbon liquid into the fused quartz capillary reaction cavity, and injecting the silicomolybdic acid aqueous solution and the hydrocarbon liquid; and carrying out visual detection on the water droplets. Through the visual fused quartz capillary thermal simulation experiment device, the color change of the water droplets at the interface of the silicomolybdic acid aqueous solution and the hydrocarbon fluid under the conditions of high temperature and high pressure is visually displayed, and the color characteristics of the water droplets are observed in real time by using a microscope, so that whether the water droplets induce electron generation or not is judged; the problem that electrons generated by water droplets cannot be directly observed and detected under high-temperature and high-pressure conditions is solved.

The invention discloses a heating assembly for a fused quartz furnace, and belongs to the technical field of heating, the heating assembly comprises a furnace body, a fixed seat is arranged on the bottom side in the furnace body, the heating assembly also comprises two hydraulic push rods which are distributed at the bottom of the fixed seat in a circumferential array, and the bottoms of the hydraulic push rods are fixedly connected with the inner wall of the furnace body. According to the invention, the heating block and the heat conduction block are inserted and mounted along the limiting sliding groove, the use positions of the limiting sliding block, the heating block and the heat conduction block are limited through the limiting sliding groove, and the furnace cover can limit and fix the top of the heating block, so that the hydraulic push rod drives the fixed seat to move upwards, and the heat conduction block enters the heating block; the use height between the heating block and the heat conduction block is adjusted to meet the heating requirements of different crucible heights, so that the different heating requirements of the equipment in the use process are guaranteed, a heat source is effectively focused, energy loss is reduced, and the applicability and the energy efficiency level of the equipment are remarkably improved.

The invention discloses waste stripping equipment during quartz round hole forming, and relates to the technical field of laser drilling, the waste stripping equipment comprises a laser processing table, a laser drilling head is arranged on the laser processing table, and a waste stripping assembly is arranged on the laser processing table. Through operation of the waste stripping assembly, when laser finishes drilling a single round hole, hole core waste is immediately adsorbed through negative pressure and is vertically downwards separated from the round hole, the purpose of immediately stripping the waste is achieved, retention of the hole core waste in the round hole is avoided, and it is not needed to wait for laser drilling of all the round holes to be completed; the hole core waste of a single round hole is rapidly stripped in a high-temperature state, molten quartz left on the hole wall of the round hole and the hole core waste cannot be cooled and solidified, and secondary adhesion of the round hole and the hole core waste is avoided.

The invention relates to a hemispherical resonator and hemispherical gyroscope parameter and defect identification system and method, and belongs to the technical field of hemispherical resonator gyroscopes. According to the invention, automatic identification of damping non-uniformity, rigidity non-uniformity and 1-3-order quality defect parameters is respectively carried out on the fused quartz hemispherical resonator before and after film coating and the gyroscope header after base assembly, so that the full-flow coverage test of the hemispherical resonator gyroscope is realized; various parameters are identified in the whole process from harmonic oscillator machining forming to the gauge outfit state, the testing precision, the system reusability, the operation convenience and consistency are greatly improved, and the production efficiency is improved.

The invention discloses a femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating, a preparation method and application of the femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating in vortex light, and belongs to the technical field of laser processing, and the femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating comprises design and parameter calculation of a geometric phase fork-shaped grating device, determination of a processing parameter window of a Type X structure and the femtosecond laser direct-writing fork-shaped grating. According to the invention, femtosecond laser is utilized to induce and generate an anisotropic nanopore structure with ultra-high transmittance higher than 97% in fused quartz and other transparent materials, namely a Type X structure, the structure has a birefringence characteristic, and the slow axis angle of the structure is always perpendicular to the laser polarization direction, so that the slow axis angle can be continuously adjusted by adjusting laser polarization. The Type X structure serves as a metasurface unit of the geometric phase fork-shaped grating, geometric phase regulation and control are achieved by controlling slow axis orientation of the Type X structure, and therefore generation and regulation and control of vortex light are achieved. The method is high in efficiency and simple in process.

A method for manufacturing a fused metal sight window that melts the metal of the frame around the window, instead of the traditional method of melting the window into the frame. Since most of the superior optical transparent materials (such as fused silica, sapphire, YAG, ALON, diamond, fused quartz and magnesium fluoride) have a melting point higher than most metals, it was not previously possible to create fused metal sight windows with these materials. By melting the frame onto the window, many new combinations of metals and optical materials may be used while retaining the strength of the sight window that results from fusing the metal and the window.

The invention belongs to the technical field of petroleum and natural gas mineral geochemical experiment research, and discloses a research method for a mechanism of extracting elemental gold in hydrothermal fluid from crude oil. In-situ visualization experiments are carried out in a transparent fused quartz capillary tube, and analysis is carried out in combination with a scanning electron microscope, an energy dispersion X-ray spectrum and a transmission electron microscope, so that continuous evolution of water droplets near an interface of oil and a solution containing HAuCl4 at a high temperature is successfully proved. According to the method disclosed by the invention, hydration electrons released in a conversion process from OH <-> to OH < * > in the water droplets are extracted, the hydration electrons and H2O2 formed in the droplets have a synergistic effect, Au3 < + > is promoted to be reduced to form natural gold atoms, the atoms are gathered into nano-scale and micron-scale gold particles in a droplet coalescence process, and a clear and reasonable mechanism is provided for formation of elemental gold in crude oil extraction hydrothermal fluid.

The invention relates to the technical field of melting preparation of quartz materials, in particular to a technological method for melting a quartz tube through cooperation of microwaves and plasmas. According to the technological method for melting the quartz tube through the cooperation of the microwaves and the plasmas, through the chemical cooperation mechanism of microwave molecule activation, plasma cooperation melting and heat preservation annealing, the problems that traditional electric heating is high in energy consumption, many in metal residues and uneven in thermal field are effectively solved, the technology is stable, and the technological method is suitable for mass production of high-purity quartz tubes.

The invention belongs to the technical field of water microdroplet manufacturing, and provides a preparation method of water microdroplets in a hydrocarbon-water system. The method comprises the following steps: preparing a quartz capillary reaction tube; preparing a microdroplet observation end and a sample injection end; sample injection: respectively inserting thin capillary syringes filled with water and hydrocarbon liquid into the quartz capillary reaction tubes, and injecting the water and the hydrocarbon liquid; fixing the quartz capillary reaction tube; preparing liquid drops, namely adjusting the temperature and the pressure in the quartz capillary reaction tube by using a cold and hot table and a constant-pressure liquid pump. The fused quartz capillary is utilized to quickly prepare the water microdroplets in a hydrocarbon-water system under high-temperature and high-pressure conditions, so that the defects that a traditional emulsification method depends on a large number of surfactants to introduce impurities and is unstable at high temperature and high pressure, microfluidic technical equipment is complex, the cost is high, the microdroplets are easy to damage at high temperature and high pressure, the preparation efficiency is low and the like are overcome; and a new way is opened up for preparing the water microdroplets under high-temperature and high-pressure conditions.

The invention provides dust removal equipment for fused quartz production. The dust removal equipment comprises a pre-separation module, a wet dust removal module and a bag dust removal module. The pre-separation module is arranged at an outlet of the dust generation source and comprises a flow guide mechanism, and the flow guide mechanism is used for guiding the flowing direction of dust-containing airflow and preliminarily capturing dust; the wet dust removal module is arranged at the downstream of the pre-separation module, the wet dust removal module comprises a spraying mechanism, and the spraying mechanism sprays fog drops to the dust-containing airflow through a plurality of ultrasonic atomization nozzles; the cloth bag dust removal module is arranged at the downstream of the wet dust removal module and comprises a drying plate and a cloth bag dust collector. Through cooperative work of the pre-separation module, the wet dust removal module and the bag dust removal module, a three-stage cooperative dust removal system is jointly formed, so that the influence of dust generated in the fused quartz production process on the environment is reduced to the greatest extent, and the dust removal efficiency is improved.

The invention discloses a manufacturing method of a fused quartz double-aspheric-surface rod mirror. The manufacturing method comprises the following steps: S1, carrying out laser-assisted ultra-precision turning on the fused quartz double-aspheric-surface rod mirror; s2, detecting the surface type precision and the surface roughness of the fused quartz double-aspheric rod mirror, if the detection result meets the processing requirement, executing the step S3, otherwise, executing the step S1; s3, performing shape-preserving polishing on the fused quartz double-aspheric rod mirror; s4, detecting the surface precision and the surface roughness of the fused quartz double-aspheric rod mirror, if the detection result meets the processing requirement, executing the step S5, and otherwise, executing the step S3; and S5, performing optical inspection on the fused quartz double aspheric rod lens. According to the method, the service life of the tool is prolonged, meanwhile, the profile precision after machining is improved, the surface roughness after machining is reduced, the turning efficiency is improved, the conformal polishing procedure is introduced after ultra-precision turning, and the roughness of the machined rod mirror is rapidly improved.

The invention discloses a signal enhancement super-permeable membrane for multi-system and multi-band wireless communication and a preparation method thereof. Relates to the technical field of electromagnetic regulation. The signal enhancement ultra-permeable membrane is composed of a large number of equilateral metal pattern units, a PET film layer and an electric smelting quartz glass dielectric layer. Each metal pattern unit is of an axially symmetric I-shaped metal structure with adjustable length and rotation angle; the transmission phase and amplitude modulation of incident electromagnetic waves can be realized by adjusting the length of the metal wire, the radian of the metal ring and the rotation angle. Full-wave simulation shows that the metal units with different sizes are orderly arranged on the PET film and are deployed on the two sides of the electric smelting quartz glass, so that macroscopic regulation and control of incident electromagnetic waves with different frequency bands can be realized respectively, and the signal gain peak value exceeds 30dB; signal enhancement of multi-band wireless communication can be realized by adjusting structural parameters of the unit structure.

The invention discloses a cosmetic ceramic massage head formula and a preparation technology. The formula comprises the following raw materials: aluminum oxide fine powder, fused quartz powder, kaolin, calcium carbonate and graphene. The preparation technology comprises the steps of making ceramic slurry; injecting the ceramic slurry into a mold to make a blank, modifying and blowing the blank dry, placing the blank in a low-temperature furnace, a degreasing furnace and a high-temperature furnace separately to complete the preparation; vibrating and polishing, and soaking and cleaning to obtain a finished product. The impact strength is high, the tear resistance is good, and through adoption of the preparation technology, serious deformation with changes in temperature during preparation and explosion during high-temperature sintering are not easy to occur, so that the stability and fullness, and surface strength and abrasive resistance are improved, and accordingly the service life is prolonged.

This invention relates to the field of inorganic non-metallic material purification technology, and particularly to a purification method for deep removal of difficult-to-remove impurities from quartz sand. The technical solution includes the following steps: quartz ore is electrically melted, cooled, and then crushed to obtain amorphous fused quartz sand; the amorphous fused quartz sand is magnetically separated, then calcined, and subsequently quenched in ultrapure water; the water-quenched quartz sand is pretreated with dilute hydrochloric acid solution, dried, and then pretreated to obtain pretreated quartz sand; the pretreated quartz sand is then heated and acid-leached with a mixed acid solution that does not contain hydrofluoric acid. This invention, under green conditions that completely eliminate hydrofluoric acid, utilizes the amorphous fused quartz method to eliminate the locking effect of the quartz lattice on impurities, achieving efficient and deep removal of difficult-to-remove impurities such as aluminum, lithium, titanium, calcium, and magnesium, stably obtaining ultra-high purity quartz materials with a purity of 5N or higher, and the process conditions are mild and compatible with existing industrial equipment.

The invention relates to the technical field of ultrafast laser, in particular to an ultraviolet laser damage inhibition method and device for a fused quartz optical element, and the method comprises the steps: obtaining oxy-18 modified DKDP crystals with oxy-18 isotope abundance higher than natural abundance; preparing the oxy-18 modified DKDP crystal into a wave plate matched with a preset ultraviolet laser wavelength; in an ultraviolet laser light path of a laser inertial confinement fusion device, a wave plate is arranged between a linear polarization state output end of ultraviolet laser and a fused quartz optical element; and enabling ultraviolet laser to sequentially pass through the linear polarization state output end and the wave plate to form circularly polarized light, and irradiating the circularly polarized light to the fused quartz optical element. The invention aims to realize the small-scale self-focusing effect of actively inhibiting fused quartz and solve the technical problem that a traditional material cannot be used as a large-aperture wave plate due to over-high transverse stimulated Raman scattering.

The invention discloses a fused quartz ceramic material and a preparation method thereof, and relates to the technical field of fused quartz ceramics. The preparation method comprises the following steps: adding deionized water, a dispersing agent and a crystallization inhibitor into high-purity fused quartz (SiO2 content is greater than or equal to 99.9%) grading powder, mixing, grinding and drying to obtain fused quartz dry powder, adding a binder into the fused quartz dry powder, manually grinding and granulating to obtain granulated powder, and carrying out compression molding, glue discharging and sintering to obtain the fused quartz ceramic material. Through the three-stage grain composition design, the synergistic crystallization inhibitor and the two-stage sintering process, the technical defects that existing fused quartz ceramic is low in strength, poor in thermal shock resistance and prone to crystallization at the high temperature are overcome, the volume density of the prepared material is larger than or equal to 2.0 g / cm < 3 >, the bending strength is larger than or equal to 70 MPa, the water-cooling thermal shock resistance at the temperature of 1050 DEG C is larger than or equal to 50 times, and the thermal shock resistance is larger than or equal to 90%. The method is suitable for manufacturing precision structural parts in the fields of aerospace, semiconductors and the like.

The present invention discloses a fully symmetric fused silica structure blowing mold and a preparation method thereof. The fully symmetric fused silica structure blowing mold of the present invention includes a mold body made of graphite and having a fused silica structure blowing structure body in the middle, and a silicon carbide film is provided on the surface of the mold body. The preparation method of the fully symmetric fused silica structure blowing mold of the present invention includes: cutting a graphite rod into a graphite blank; performing mechanical rough machining on the graphite blank to complete the structure forming; after washing the graphite blank completed with structure forming, forming a silicon carbide film on the front surface; performing mechanical finish machining on the graphite blank with the silicon carbide film; polishing the graphite blank to obtain the prepared fully symmetric fused silica structure blowing mold. The present invention aims to significantly improve the consistency and reliability of the blown products with a fully symmetric fused silica structure, while greatly extending the service life of the blowing mold, significantly reducing the production cost, and improving the production efficiency.

The invention discloses a novel non-Newtonian fluid driven fixed abrasive polishing disc, and relates to the technical field of optical element polishing. The fixed abrasive polishing disc comprises an eccentric adjusting frame, a metal back plate, a caliber adjusting ring, a non-Newtonian fluid layer, a rubber sleeve, a fixing ring and a fixed abrasive polishing pad. The metal back plate is matched with the eccentric adjusting frame through the connecting shaft to achieve the adjustable eccentric distance, the caliber adjusting ring can be replaced with different calibers to meet different requirements, the rubber sleeve is filled with the non-Newtonian fluid layer, the fixed abrasive polishing pad is fixed with cerium oxide abrasive, and the size of the fixed abrasive polishing pad is slightly larger than that of the rubber sleeve. The dynamic stiffness characteristic of the non-Newtonian fluid layer is utilized to realize effective correction of full-band errors; the rigidity and efficiency are improved through the fixed grinding material, and hydration reaction is avoided; and multi-structure collaborative optimization of pressure transmission and fringe effect ensures process stability. Experiments show that the fixed abrasive polishing disk can reduce the intermediate frequency error of a fused quartz workpiece to 0.1 mu m and the Ra value to 1.6 nm, is suitable for diversified machining scenes and is high in practicability.

The invention discloses a production technology for a semiconductor silicon device ingot casting crucible. The production technology for the semiconductor silicon device ingot casting crucible comprises the steps that raw materials are prepared, wherein the raw materials of a quartz coating, the raw materials of a fused quartz ceramic sleeve, the raw materials of a silicon nitride coating and the raw materials of a fused quartz ceramic crucible are prepared; the raw material of the quartz coating is natural high-purity quartz sand containing 99.99% of silicon dioxide, and the raw material of the fused quartz ceramic sleeve and the raw material of the fused quartz ceramic crucible are both mixtures of D50 quartz fine slurry with the size of 8-12 micrometers and quartz coarse sand with the size of 20-200 meshes. According to the production process of the ingot casting crucible for the semiconductor silicon device, the fused quartz ceramic sleeve can be provided with a porous structure, and stress can be released when silicon liquid adheres; the overall stability of the composite structure is enhanced through injection coagulation, slip casting and drying treatment, crucible breakage or silicon ingot defects caused by stress concentration are avoided, and ingot casting stability is guaranteed.

This application discloses a high-transmittance ultraviolet fluorescence detection lens, relating to the field of optical lenses. It addresses the problems of insufficient transmittance, severe fluorescence signal attenuation, and poor image quality in existing ultraviolet fluorescence detection lenses. The lens is constructed by sequentially arranging an object surface protection window, a first lens, a second lens, a third lens, an aperture stop, a fourth lens, a fifth lens, and an image plane along the optical axis from the object side to the image side. The object surface protection window is made of calcium fluoride, and at least a portion of the first to fifth lenses are made of calcium fluoride and at least a portion of fused silica. Each lens surface is coated with an ultraviolet antireflection film. By combining calcium fluoride and fused silica to optimize ultraviolet transmittance, and using a multi-layer ultraviolet antireflection film to reduce surface reflection loss, the lens achieves an overall transmittance of over 88% in the 250nm-380nm band. This effectively reduces fluorescence signal attenuation, significantly improves image brightness and contrast, and achieves good aberration correction. The compact structure makes it suitable for mass production applications.

This application relates to a method for preparing cristobalite sand and fused silica glass sand using waste quartz crucibles, wherein the method includes the following steps: 1) crushing and first screening the waste quartz crucibles, collecting the first undersize and the first oversize respectively; 2) subjecting the first oversize obtained in step 1) to high-temperature calcination to obtain a mixture containing a surface crystallized layer of cristobalite sand and fused silica glass sand separated; 3) subjecting the mixture obtained in step 2) to auto-grinding and second screening, taking the second undersize to obtain the first cristobalite sand, and taking the second oversize to obtain the first fused silica glass sand; 4) washing the first cristobalite sand in step 3), and performing wet screening to collect the third oversize for processing to obtain the first high-purity cristobalite sand, and collecting the third undersize for processing to obtain the second high-purity cristobalite sand.

The method suggests coating the transparent solid with an additional laser radiation absorptive layer of material and then laser texture the coated solid to attain a nanostructured transparent solid with increased transmissivity while the additional coating 5 is removed. This method is applicable but not limited to a substrate transparent solid like glasses of silicate composition, such as fused silica, borosilicates, aluminosilicates, alkali aluminosilicates, float glasses, crown glass, amorphous sapphire etc., crystals, for example crystalline sapphire, laser active medium crystals etc. and polymers, for example polycarbonate, plexiglass etc. It is also applicable to substrates coated with a thin film of 0 above mentioned materials.

The invention relates to the technical field of metallurgical coking, and provides a devitrification and CO erosion resistant zero-expansion silica brick and a preparation method thereof.The devitrification and CO erosion resistant zero-expansion silica brick is prepared from, by weight, 3-10 parts of nanoscale alpha-Al2O3, 15-35 parts of andalusite, 30-40 parts of high-purity fused mullite, 10-20 parts of superfine silica powder, 2-5 parts of silica sol binding agent and 3-5 parts of composite mineralizer. Through the synergistic effect of the design of the composite mineralizer and the stepped heat treatment process, the technical problems that the existing zero-expansion silica brick is easy to devitrify and crystallize fused quartz, poor in CO erosion resistance and lack of crystallization degree during long-term use at high temperature are solved; the thermal shock cycle index and the high-temperature breaking strength of the material can be improved, the formation of alpha-cristobalite crystallization peak is effectively inhibited, and the mass loss is reduced in a reducing atmosphere, so that the structural stability of the material is enhanced, and the service life of the material is prolonged.

An artificial stone and a method of making the artificial are disclosed. The artificial stone comprises: 6 to 16 wt.% acrylic thermoset resin; and 84 to 94% fused silica particles, wherein at least 40 wt.% of the fused silica particles are characterized by a particle size larger than 100 pm.

The application relates to the technical field of laser packages, in particular to an in-situ optical shaping VCSEL array integration method and an optical interconnection module, which comprises the following steps: S1, a quartz substrate is used, a femtosecond laser pulse is focused and scanned in the quartz substrate, and a three-dimensional profile of a micro hole is defined in advance; S2, a VCSEL chip is precisely placed into the micro hole in an array arrangement with the VCSEL chip facing upwards, and epoxy resin is cured by heating; S3, a metal layer is sputtered on the quartz substrate, and an electrical interconnection track is formed through photolithography; S4, a two-photon polymerization direct writing system is used to initiate two-photon polymerization of photoresist, solidification is realized, and the production of a polymer lens is completed. The application selects fused quartz glass as the only passive integrated substrate; the substrate has four characteristics of optical transparency, electrical insulation, thermal stability and three-dimensional micro machining at the same time, replaces the multilayer composite substrate in a traditional scheme at one time, and realizes the original integration design basis of an optical path, an electrical circuit and a thermal path.

The fused quartz crushing device comprises a crushing box, a collecting box, a filter screen plate, a crushing assembly, a driving assembly and a transmission mechanism, the crushing box is arranged on the collecting box and communicated with the collecting box, and an arc-shaped sliding way is formed in the bottom wall of the crushing box; the filter screen plate is slidably arranged in the arc-shaped slide way; the crushing assembly comprises a crushing sawtooth plate and a crushing mechanism, and the crushing sawtooth plate is close to the inlet end of the crushing box and fixedly arranged on the top wall of an inner cavity of the crushing box; the crushing mechanism is rotationally arranged in the crushing box; the driving assembly is arranged on one side of the crushing box and connected with one end of the crushing mechanism. And the transmission mechanism is rotationally arranged on the outer wall of the crushing box. Therefore, fused quartz particles blocked on the filter screen plate can be effectively removed, the requirement of manual intervention is greatly reduced, the production efficiency and the product quality are remarkably improved, and the maintenance cost is effectively reduced.

The invention relates to the technical field of rock mechanics tests, and discloses a multiphase transparent rock-soil body sample preparation method and a visual combined test system.The sample preparation method comprises the following steps that S1, fused quartz sand and transparent glass sand are mixed, cooled after being cleaned and subjected to heat preservation till solidification, and a transparent skeleton structure module is formed; s2, removing impurities from amorphous silicon dioxide formed by melting natural silica, washing with water, and mixing with an epoxy resin solution to form a transparent rock matrix module; s3, filling the transparent rock matrix module and the transparent skeleton structure module into a sample shaping mold, and uniformly mixing the transparent rock matrix module and the transparent skeleton structure module; s4, demoulding and naturally cooling; s5, absolute ethyl alcohol is used for cleaning, then drying is conducted, and the multiphase transparent rock-soil body sample is obtained. According to the invention, real-time visual monitoring of the target sample is realized, and acoustic-optical-thermal-electric combined monitoring of the target sample is realized through the four-dimensional combined test system.

The invention discloses an in-situ mullite whisker toughened silicon-based ceramic core and a preparation method thereof, and relates to the technical field of ceramic core preparation. The method comprises the following steps: carrying out wet ball milling on mica plate leftover materials to obtain uniform powder, carrying out ammonia water soaking treatment, and carrying out solid-liquid separation to obtain mica powder; mixing the fused quartz glass powder, the mica powder, the mineralizer and the plasticizer to obtain ceramic core slurry; performing hot-pressing injection molding on the slurry to obtain a biscuit; dipping the biscuit in the slurry for secondary shaping; embedding the shaped biscuit in light aluminum oxide, and sintering at high temperature to obtain a ceramic core sintered body; and finally, carrying out composite strengthening liquid dipping treatment to obtain a finished product. The mica plate leftover materials are used as raw materials, mullite whiskers are generated through in-situ reaction, and the room-temperature and high-temperature bending strength, thermal shock resistance and dimensional stability of the ceramic core are remarkably improved.

The utility model relates to the technical field of scanning field lenses, in particular to an infrared quartz scanning field lens with a large image plane. The infrared quartz scanning field lens with the large image plane comprises a diaphragm and an image plane, a field lens is installed between the diaphragm and the image plane, and the field lens comprises six lenses which are coaxially arranged in sequence, are made of fused quartz glass materials and have the refractive index of 1.46; infrared laser emitted by the infrared quartz scanning field lens with the large image plane has a heat effect, the scanning image plane is enlarged under the condition that it is guaranteed that edge focusing light spots are not distorted, machining actions such as punching, cutting and marking can be conducted on a workpiece in a large range, and the machining speed of infrared laser machining is greatly increased.