317 results about "High fracture" patented technology

The invention discloses a high-strength and high-toughness aluminum nitride ceramic and a preparation method thereof, and relates to the technical field of ceramics, a sol-gel method is adopted to coat the surface of aluminum nitride with a stable shell layer to form a core-shell structure, meanwhile, the low lattice mismatch rate of a core-shell interface is utilized to reduce thermal resistance, and toughness and thermal conductivity are both considered; according to the external magnetic field tape casting method, the magnetic dipole moment orientation principle is utilized, an external magnetic field is applied in the tape casting stage, the in-plane mechanical property is improved, and the fracture toughness is improved through the magnetism of aluminum nitride whiskers; a reinforcement is introduced to improve the mechanical property and corrosion resistance of the aluminum nitride ceramic material, multi-granularity powder is compounded, large-particle aluminum nitride powder is used as a sintering and heat-conducting framework material, and high activity provided by submicron particles is utilized to promote sintering, so that the sintering temperature of aluminum nitride can be remarkably reduced, and the performance is greatly improved; and the aluminum nitride substrate expands more application fields on a future packaging circuit.

The invention discloses a gradient gradual change type powder material as well as a preparation method and application thereof. The gradient gradual change type powder material comprises a non-metal core, a transition layer, a gradual change layer and a modification layer. The gradient powder material provided by the invention shows excellent strength-ductility synergistic effect, high fracture toughness and enhanced fatigue, wear and corrosion resistance, is good in metal wettability, can effectively reinforce a metal matrix and improve the performance of the metal matrix, can also be well dispersed in resin, and can be applied to the field of metal materials. The gradient powder material disclosed by the invention has a wide application prospect, and can be applied to the fields of heat dissipation of electronic devices, high-speed cutting tools, grinding material and grinding tool materials, high-temperature protection materials and the like.

The invention discloses high-toughness ultrathin flexible glass and a preparation method thereof, and relates to the technical field of glass manufacturing. The ultrathin flexible glass is prepared from the following raw materials: silicon dioxide, aluminum oxide, lithium oxide, sodium oxide, magnesium oxide, a modified nano reinforced phase, a high-temperature melting regulator and cerium dioxide. The modified nano reinforced phase is prepared by the following steps: pre-treating silicon carbide and silicon nitride with hydrochloric acid, and mixing with nano zirconium oxide to obtain a mixture; and modifying the mixture with a silane coupling agent to obtain the modified nano reinforced phase. The high-temperature melting regulator is a mixture of lithium borate, sodium sulfate and lithium fluoride. The preparation method of the ultra-thin flexible glass comprises the following steps: preparing the modified nano reinforced phase, melting and homogenizing the glass, forming the glass substrate, and preparing the ultra-thin flexible glass. The ultra-thin flexible glass prepared by the invention has relatively high fracture toughness and structural rigidity, excellent flexibility and bending fatigue durability, and excellent thermal shock resistance.

A high-strength, highly transparent nanocrystalline glass, a preparation method therefor, and a use thereof. The high-strength, highly transparent nanocrystalline glass uses precursor minerals mainly comprising synthetic aluminum-rich feldspar-like ceramic glass material, β-spodumene material, cordierite material, synthetic β-dicalcium silicate material, and magnesium aluminum spinel material for the main body of a feldspar-like matrix glass having a stable structure. Ultrafine zirconia powder having a particle size of less than 10 nm is used as a nucleating agent and microcrack damping and pinning agent, to control the formation of nanocrystals smaller than 100 nm in the glass body formed after melting. The volume percentage content of the nanocrystals is 50%-95%, and the nanocrystals together with the matrix glass form a high-strength, highly transparent nanocrystalline glass having a uniform microstructure. The obtained nanocrystalline glass has high hardness, high fracture toughness and high light transmittance, and is suitable for manufacturing various types of optical glass.

The invention provides a fluororesin fluororubber composite material with high fracture work and a preparation method thereof, and the fluororesin fluororubber composite material comprises the following raw materials by weight: 100-120 parts of fluororubber; 20 to 40 parts of fluororesin micro powder; 1-8 parts of a cross-linking agent; and 0.1-6 parts of an assistant cross-linking agent. The fluororesin and fluororubber composite material disclosed by the invention not only can improve the fracture energy, but also can improve the cleanliness, and also can improve the etching gas resistance.

The invention provides alumina-based gradient ceramic as well as a preparation method and application thereof, and belongs to the technical field of ceramic materials. A gradient structure design is adopted, based on a non-linear component distribution mode, the ratio of aluminum oxide to zirconium oxide is optimized, a sintering aid is added, aluminum oxide-based composite powder is synthesized through high-energy ball milling, a mold is filled with the aluminum oxide-based composite powder in a layered mode according to the gradient design after the aluminum oxide-based composite powder is dried, and the compact aluminum oxide-based gradient ceramic is obtained through a hot pressing sintering process. The alumina-based gradient ceramic prepared by the invention has high Vickers hardness (greater than or equal to 21 GPa), high strength (greater than 850 MPa) and high fracture toughness (greater than 7 MPa.m < 1 / 2 >), and has excellent mechanical properties, and the fracture toughness and the strength are greatly improved on the premise of ensuring that the Vickers hardness is not reduced.

The invention belongs to the technical field of advanced metal ceramic composite materials, and particularly relates to high-toughness Ti (C, N)-based metal ceramic and a preparation method and application thereof. The high-toughness Ti (C, N)-based metal ceramic comprises the following components in percentage by weight: 50 to 70 percent of solid solution, 15 to 25 percent of metal binding phase, 0.1 to 0.5 percent of rare earth oxide or rare earth salt and 15 to 25 percent of carbide phase, the solid solution contains an amplitude-modulated decomposition structure. The solid solution hard phase with an amplitude modulation decomposition structure is reserved in the alloy containing a certain amount of metal binder, so that the metal ceramic material has higher fracture toughness, bending strength and high-temperature toughness compared with traditional Ti (C, N)-based metal ceramic under the condition that the hardness is kept unchanged.

The invention belongs to the technical field of ceramic materials, and relates to complex-phase high-entropy ceramic as well as a preparation method and application thereof. The technical problem that in the prior art, high-entropy ceramic cannot synchronously have high hardness and fracture toughness is solved. The invention provides a complex-phase high-entropy ceramic. The complex-phase high-entropy ceramic comprises a carbonitride phase and a single boride phase, the transition metal elements comprise titanium, zirconium, niobium, tantalum and hafnium; in the complex-phase high-entropy ceramic, calculated according to the volume content, 93Vol% is smaller than or equal to the carbonitride phase lt; 100 Vol%, 0 Vol% lt; and the single boride phase is less than or equal to 7Vol%. The complex-phase high-entropy ceramic has the advantages of uniform two-phase distribution, small grain size, high density, high hardness and high fracture toughness. The invention further provides a preparation method of the complex-phase high-entropy ceramic, a liquid-phase precursor method is combined with an in-situ hot pressing sintering method, the process is simple, and the production period is short. Meanwhile, the invention further provides application of the complex-phase high-entropy ceramic in material preparation in the fields of aerospace and mechanical engineering.

The invention belongs to the technical field of metal ceramic, and particularly relates to a high-toughness metal ceramic particle and a preparation method thereof.The particle is characterized in that ceramic micro powder, surface modified ceramic powder and rare earth element carbonitride form a composite hard phase, and the composite hard phase is dispersed in a metal matrix composed of multiple metal elements; and synergistic regulation and control components are introduced to optimize interface bonding and tissue uniformity. Particles are subjected to a step-by-step heat treatment and isostatic pressing forming process, and a stable structure is formed by controlling the oxygen content and the sintering atmosphere. The obtained material has high bending strength, high fracture toughness and good thermal shock resistance, is suitable for the application field of wear resistance and crack resistance under extreme working conditions, and has tissue compactness and mechanical stability.

A gradient multilayer nano Ti (C, N)-based metal ceramic and a preparation method thereof relate to the field of powder metallurgy, and the method comprises the following steps: S1, mixing 64.9% by mass of titanium carbonitride, 23% by mass of tungsten carbide, 8% by mass of cobalt, 4% by mass of molybdenum carbide and 0.1% by mass of graphene nanosheets to obtain mixed powder I; mixing 60.9% of titanium carbonitride, 23% of tungsten carbide, 8% of cobalt, 8% of molybdenum carbide and 0.1% of graphene nanosheets to obtain mixed powder II; and S2, the mixed powder I and the mixed powder II are added into a mold layer by layer, three layers of mixed powder with the surface layer being the mixed powder II layer and the core layer being the mixed powder I layer are obtained, spark plasma sintering is carried out, and the gradient multi-layer nano Ti (C, N)-based metal ceramic is obtained. According to the Ti (C, N)-based metal ceramic and the preparation method thereof, different molybdenum carbide mass proportions of the surface layer and the core layer are controlled, a hard phase enrichment area is formed on the surface layer, a binding phase enrichment area is formed on the inner core part, the Vickers hardness can be improved through hard phase enrichment, the fracture toughness can be improved through binding phase enrichment, and therefore the Ti (C, N)-based metal ceramic with the hardness and the fracture toughness is obtained.

Glass compositions including 50 mol % to 65 mol % SiO2, 13 mol % to 20 mol % Al2O3, 6 mol % or more B2O3, 0 mol % to 5 mol % MgO, 0 mol % to 2 mol % CaO, 8 mol % to 14 mol % Li2O, 0 mol % to 4 mol % Na2O, and 0 mol % to 1 mol % K2O, where Al2O3 mol %>R2O+R′O−3 mol %. The glass compositions may have a K1C value of 0.75 MPa*m1 / 2 or more measured by a chevron short bar method. The glass compositions may be used in a glass article or consumer electronic product.

A glass-ceramic article comprises silica, lithia, phosphorus pentoxide, and zirconia in amounts that, when heat treated, provide a glass-ceramic including a lithium disilicate (L2Si2O5) crystalline phase. The glass-ceramic may have high fracture toughness, transparency, hardness, and may be strengthen via ion-exchange.

The invention provides low-cost low-alloy steel with the fracture toughness higher than 140 MPa.m < 1 / 2 > and the product of strength and elongation higher than 50 GPa% and a manufacturing method. The microstructure of the steel is as follows: 78-88% of martensite matrix, 10-20% of retained austenite, 1-3% of transition carbide and less than 1% of stable nano precipitated carbide. The steel comprises the following element components in percentage by mass: 0.60 to 0.70 percent of C, 1.25 to 1.75 percent of Mn, 1.25 to 1.75 percent of Si, 0.02 to 0.05 percent of Nb + V and the balance of iron. According to the manufacturing process, at least one time of normalizing treatment is carried out, and then a quenching-distribution-tempering (Q-P-T) heat treatment process is carried out. The mechanical property of the low-alloy steel is improved by designing a proper microstructure fraction, optimizing steel components and adjusting a heat treatment process, so that the fracture toughness of the low-alloy steel is higher than 140 MPa.m < 1 / 2 >, and the product of strength and elongation is higher than 50 GPa%.

The present invention relates to a heat treatment method for improving the strength-ductility matching of metastable β titanium alloys, comprising the following steps: (1) heating a forged blank of a metastable β titanium alloy with a basketweave structure to a solution holding temperature in the two-phase region; (2) directly furnace cooling the solution-treated alloy to 500°C - 650°C, and then taking it out for air cooling; (3) aging the alloy treated by solution treatment, furnace cooling and air cooling at 500°C - 650°C for 4 h - 8 h, and finally taking it out for air cooling. By means of two-phase region solution treatment, furnace cooling + air cooling, and aging + air cooling, and through the selection of heat treatment temperature, time and cooling method, the present invention can finely regulate the microstructure of metastable β titanium alloys, obtain a heterogeneous structure of micron-scale strip-shaped primary α + nano-scale needle-shaped secondary α + residual β phase, so that the metastable β titanium alloy has an excellent matching of high strength, high ductility and high fracture toughness.

The invention discloses a forging method of a high-uniformity beta-state titanium alloy stepped forge piece. The forging method comprises the steps of cogging forging, first-time static recrystallization homogenization forging, second-time static recrystallization homogenization forging, stepped forge piece two-phase region drawing blank forging, finished product forging and the like. By the adoption of the method, the produced forge piece is of a uniform lamellar structure, the forge piece can obtain high fracture toughness, and the service life of the shaft forge piece can be prolonged.

A glass composition can include from 60 mol % to 69 mol % SiO2, from 10 mol % to 18 mol % Al2O3, from 2.3 mol % to 6.9 mol % Li2O, from 2.1 mol % to 6.7 mol % Na2O, and from 1.1 mol % to 9 mol % alkaline earth metal oxides. The glass composition can comprise a liquidus viscosity greater than or equal to 150 kP. The glass composition can include from 0.25 mol % to 1 mol % K2O, from 0.5 mol % to 4 mol % P2O5, and / or 0.5 mol % to 3.6 mol % B2O3. The glass composition can form anorthoclase or a feldspar solid solution. The glass composition can include MgO+Li2O−(CaO+SrO+Na2O+K2O) is from −0.5 to −4. The glass composition can include volume electrical resistivity is greater than or equal to 2×1015 Ohm-centimeters. The glass composition may have a fracture toughness of greater than or equal 0.75 MPa√m.

The application relates to the field of electrochemistry, and provides a sulfide solid electrolyte, a preparation method thereof, a battery and an application. 7‑ A PS 6‑A X A The application also provides a sulfide solid electrolyte selected from any one of compounds of a chemical formula Li 7‑ A PS 6‑A X A X is halogen, and 1<=A<=2; wherein the sulfide solid electrolyte has a fracture toughness of 0.5-2 MPa m 1 / 2 The sulfide solid electrolyte has high fracture toughness and ionic conductivity. Further, the preparation method controls the particle size of a substrate, reduces the solvent consumption and optimizes the sintering step, thereby improving the fracture toughness, high purity and high ionic conductivity of the product, and significantly reducing environmental pollution, energy consumption and production cost.

The invention relates to the technical field of ceramic-based composite materials, in particular to a wear-resistant lubricating and toughening ZTA composite ceramic material and a preparation method thereof. The preparation method specifically comprises the following steps: a, respectively carrying out water immersion, centrifugation and drying on 100-200nm aluminum oxide powder and 1-2mu m yttrium oxide stabilized zirconium oxide powder to finish raw material pretreatment; b, adding a ball-milling medium alcohol into the aluminum oxide powder, the yttria-stabilized zirconia powder and auxiliary metal powder which are pretreated in the step a, and performing long-time wet ball-milling mixing; c, the powder obtained after ball milling and mixing in the step b is dried for 12-24 h at the temperature of 100-120 DEG C; and d, putting the powder dried in the step c into a discharge plasma sintering furnace, and sintering to obtain the ZTA composite ceramic material. The ZTA multiphase ceramic material has the advantages of short sintering time, energy consumption reduction, high fracture toughness, enhanced wear resistance, friction coefficient reduction and high hardness.

The invention provides a fracture activation early warning method and system based on fracturing pump stop data, and the method comprises the steps: firstly determining first pressure drop curve data based on obtained pressure monitoring data after fracturing pump stop of a target oil and gas well; then, filtering the first pressure drop curve data to obtain second pressure drop curve data; second, based on the second pressure drop curve data, a pressure drop derivative and a target double logarithmic curve are determined. Next, according to the target double logarithmic curve, extracting monitoring characteristic parameters; and finally, based on the monitoring characteristic parameters and an early warning threshold, determining fracture activation early warning information. The method focuses on analysis of pressure data after pump stop in fracturing operation by utilizing different seepage capacities of fluid in a rock matrix and fracture. And in combination with double logarithmic curve characteristic analysis, monitoring characteristic parameters representing fracture activation are extracted so as to effectively identify activation characteristics of fracturing fracture. Therefore, the accuracy of fracture activation early warning can be effectively improved.

The invention discloses a high-strength and high-toughness Al-Zn-Mg-Cu aluminum alloy profile for an ultra-large aircraft wing rib and a preparation method of the high-strength and high-toughness Al-Zn-Mg-Cu aluminum alloy profile, the Al-Zn-Mg-Cu aluminum alloy profile comprises the following alloy components in percentage by mass: 5.5-5.8% of Zn, 1.6-1.9% of Mg, 1.9-2.5% of Cu, 0.2-0.3% of Mn, 0.1-0.2% of Zr, 0.1-0.2% of Cr, 0.1-0.2% of Ti, less than or equal to 0.12% of Fe, less than or equal to 0.1% of Si and the balance of Al and inevitable impurities, and the content of a single impurity is not more than 0.05%. The total content of impurities does not exceed 0.15%; the preparation process comprises the steps of smelting casting, two-stage homogenizing annealing, extrusion, solution treatment, stretch straightening and two-stage artificial aging, a mold adopted during extrusion is a double-mold-hole mold, and mold holes of the mold are distributed left and right and are in central symmetry. According to the Al-Zn-Mg-Cu aluminum alloy and the preparation method thereof, by optimizing the alloy components, adjusting the layout of the die holes of the die and the solid solution and aging process, the grain structure of the profile is fine and uniform in distribution, and the Al-Zn-Mg-Cu aluminum alloy guarantees excellent strength while the fracture toughness is improved.

To provide a silicon nitride sintered substrate which achieves both high fracture toughness and high flexure strength.SOLUTION: A silicon nitride sintered substrate includes: surface layers being present on both surfaces and consisting of silicon nitride sintered particles of which the average circle corresponding diameter is 2.0 to 10.0 μm and the average aspect ratio is 3 or more; and an inner layer consisting of silicon nitride sintered particles of which the average circle corresponding diameter is 5.0 μm or less and the average aspect ratio is less than 3. It is preferable that a thickness of each surface layer of the silicon nitride sintered substrate is 0.01 mm or more and a total thickness of both the surface layers is equal to or less than 35% of a thickness of the silicon nitride sintered substrate.SELECTED DRAWING: None

The invention relates to the technical field of high-temperature protective coatings, in particular to a novel composite rare earth silicate-rare earth zirconate gradient structure ultra-high-temperature thermal / environmental barrier coating and a preparation method thereof.The novel composite rare earth silicate-rare earth zirconate gradient structure ultra-high-temperature thermal / environmental barrier coating comprises a Si bonding layer, a RE2Si2O7 middle layer, a RE2SiO5-RE2Si2O7 composite rare earth silicate transition layer and a rare earth zirconate heat insulation top layer which are sequentially prepared on a ceramic-based composite material matrix; the molar fraction of the RE2Si2O7 phase in the RE2Si2O7 intermediate layer in the ultrahigh-temperature thermal / environmental barrier coating system is not less than 97%, the problem of SiO2 volatilization in the RE2Si2O7 plasma spraying process is solved, the thermal expansion matching property of the Si bonding layer and the RE2Si2O7 intermediate layer is improved, and the RE2SiO5-RE2Si2O7 transition layer has good sintering resistance and high-temperature phase stability at the temperature of 1400-1500 DEG C and also has relatively high fracture toughness.

An object of the present invention is to provide an epoxy resin composition having excellent viscosity stability and having a high compression property and high fracture toughness at the time of wet heating, and to provide a fiber-reinforced composite material obtained by using, as a matrix resin, a cured resin obtained by curing the epoxy resin composition. An epoxy resin composition including a component [A] and a component [B] and satisfying Condition 1 and Condition 2 described below: [A]: a tetrafunctional glycidyl amine type epoxy resin, [B]: dimethylthiotoluenediamine, Condition 1: in the epoxy resin composition, a content of the component [A] is 20 parts by mass or more and 80 parts by mass or less with respect to 100 parts by mass of a total epoxy resin, Condition 2: in the epoxy resin composition, a value (E82 / E23) obtained by dividing a flexural modulus (82°C under wet condition) by a flexural modulus (at 23°C and 50% RH) is 0.75 or more.

The present invention discloses a high fracture strain hot stamping forming component, a steel sheet for hot stamping, and a hot stamping process. Through innovative alloy compositions and hot stamping processes, the structure and mechanical properties after hot stamping are flexibly regulated, and the fracture strain of the hot-formed steel is increased to ensure the energy absorption effect. By using Ti and Nb elements to combine with C and N atoms in the steel, the dissolved C / N atoms are consumed, and nanoscale second-phase particles are formed and uniformly dispersed on the matrix, reducing the hardness difference at the ferrite-martensite interface and effectively improving the plasticity and toughness of the material; the materials involved are relatively simple, and the alloy cost is low. The preparation process of the steel sheet for hot stamping and the hot stamping process window are wide. Based on the control of the transfer time of the hot stamping blank, the flexible control of the content of epitaxial ferrite (oriented attached ferrite) is realized, and finally the preparation of hot stamping forming components with different strength grades after hot stamping is realized, which is very beneficial to the popularization of integrated door rings and will effectively contribute to automotive lightweighting and safety energy absorption management.

The present application relates to the manufacture of high-strength steel coated plate welded parts, in particular to a welding material, a high-strength steel workpiece, a laser welded joint and a manufacturing method thereof. The composition of the welding material satisfies the following conditions in terms of percentage by weight: C is greater than or equal to 0.5%, trace alloying elements are 0-0.36%, the content of Mn and Si is less than or equal to 2%, 6% is greater than or equal to 5C+Mn and is greater than or equal to 2.5%, and the rest is Fe and inevitable other elements; the trace alloying elements are at least one of Nb, V and Ti elements, and the content of Nb, V and Ti elements is less than or equal to 0.12%. The method does not need to remove the aluminum coating, utilizes the solid solution strengthening effect of C, and makes the volume fraction of lath martensite in the final weld after quenching greater than or equal to 90%. This scheme reduces the addition of alloying elements, reduces the cost and process control difficulty, avoids the formation of coarse carbides, improves the mechanical properties and stability of the joint, has high fracture strength and elongation, and realizes the double improvement of the strength and toughness and economy of the joint.

A thermal barrier coating (TBC) material with high fracture toughness, calcia-magnesia-alumino silicate (CMAS) corrosion resistance, and ultra-high-temperature sintering resistance, and a preparation and use thereof are provided, belonging to the technical field of high-temperature / ultra-high-temperature TBCs. In the TBC material, ZrO2 is co-doped with different rare earth oxides and a crystal defect concentration and a lattice distortion degree are controlled by a doping amount of the rare earth oxides, resulting in a fully-stabilized cubic fluorite crystal structure showing no phase change at a room temperature to 1,600° C. Moreover, the material exhibits high toughness, CMAS corrosion resistance, ultra-high-temperature sintering resistance, and long service life.

To provide an antireflection film that has a good antireflection characteristic, and which is good for molding due to its high fracture elongation, hardly whitened when elongated, and suitable for in-mold molding and out-mold molding, and a molded article using the antireflection film.SOLUTION: Provided is an antireflection film in which a hard coat layer and a low refractive index layer are laminated on a light-permeable base film in the order stated, and the low refractive index layer is a cured substance of a low refractive index resin composition containing urethane (meth)acrylate, a hollow silica, an alumina particulate, a surface additive, and a photoinitiator. The urethane (meth)acrylate contains urethane acrylate that has a structure in which diisocyanate reacted with ethylene glycol and isophorone diisocyanate is further reacted with pentaerythritol triacrylate, and 9 or less functional urethane (meth)acrylate.SELECTED DRAWING: None

The invention discloses a bi-component microcapsule self-repairing epoxy resin composite material as well as a preparation method and application thereof, the bi-component microcapsule self-repairing epoxy resin composite material is of a core-shell structure, epoxy resin and pentaerythritol tetra (3-mercaptopropionate) are taken as a core, and the outer layer is coated with polymethyl methacrylate. In the aspect of tensile property, the tensile strength of the epoxy resin composite material is in a trend of firstly increasing and then decreasing along with the increase of the microcapsule content from 0 wt%. Due to the fact that the microcapsules with the thermoplastic polymethyl methacrylate as the shell are added, the overall tensile property of the material is improved; the microencapsulated repairing agent not only can heal cracks, but also can provide higher fracture toughness for the damaged part of the epoxy resin composite material.

Glass-based articles comprise stress profiles providing improved fracture resistance. The stress profiles contain a high peak tension and a region with a high degree of negative curvature. The glass-based articles herein provide high fracture resistance after multiple drops.

The invention relates to high-strength and high-transparency nano glass ceramic and a preparation method and application thereof, and the high-strength and high-transparency nano glass ceramic is prepared from a synthetic aluminum-rich feldspar ceramic glass material, a beta-spodumene material, a cordierite material, a synthetic beta-dicalcium silicate material and a magnesium aluminate spinel material. According to the present invention, a stable-structure feldspar matrix glass is adopted as a main body precursor mineral material, zirconia micro-powder with a particle size of less than 10 nm is adopted as a nucleation agent and a micro-crack damping pinning agent, nanometer microcrystals with a particle size of less than 100 nm are controlled to be generated in a glass body formed after melting, and the nanometer microcrystals account for 50-95% by volume; the high-strength and high-transparency nanocrystalline glass with a uniform microstructure is formed and woven with matrix glass in a symbiotic manner. The prepared nano microcrystalline glass has the advantages of high hardness, high fracture toughness resistance and high light transmittance, and is suitable for manufacturing various optical glass.