708 results about "Temperature resistance" patented technology

The invention discloses an electronic wire harness intelligent high temperature resistance test method based on dynamic temperature monitoring, and the method comprises the steps: collecting multi-region temperature data through a sensor array, and dynamically adjusting the measurement point density and sampling frequency for a region with a higher temperature change rate; for a local high-temperature area, sampling points are increased, a high-temperature micro-change monitoring mechanism is triggered, and micro-change of the temperature is recorded in real time; according to a temperature gradient change trend, dynamic adjustment parameters of a key area are extracted, and density distribution of measuring points is optimized; meanwhile, optimal utilization of computing resources is also considered, and the density of measuring points in a temperature stable region is properly reduced; through continuous monitoring and algorithm parameter optimization, stable high temperature evaluation is finally realized, and the temperature evaluation error is controlled within 1 DEG C. According to the dynamic self-adaptive temperature monitoring method, the temperature monitoring precision and efficiency during operation of the electronic wire harness are remarkably improved.

The invention relates to the technical field of wire performance detection, and discloses a wire high temperature resistance detection method, device and equipment and a storage medium. The method comprises the following steps: arranging micro thermocouple array sensors on the surface, the bending part and the connecting point of an outer insulating layer of a to-be-measured wire rod to obtain a wire rod temperature monitoring network; placing the to-be-tested wire rod in a constant-temperature box to execute a high-temperature cyclic loading test, and collecting real-time temperature response data of the to-be-tested wire rod; carrying out temperature gradient analysis and heat distribution characteristic calculation to obtain a temperature change characteristic parameter set; executing temperature fluctuation compensation and thermal stress accumulation calculation to obtain thermal stress characteristic parameters; and carrying out aging characteristic analysis on the wire insulating material through the thermal stress attenuation network model to obtain wire predicted life and failure probability distribution of the to-be-tested wire in a high-temperature environment. The method can comprehensively capture the temperature change characteristics of each part of the wire rod, and achieves the precise prediction of the failure probability of the wire rod under different temperature conditions.

The invention provides a moisture-resistant and high-temperature-resistant wire and a preparation method and application thereof. And each wire comprises a conductor, and a mica insulating layer, an inorganic fiber insulating layer, a high-temperature-resistant insulating paint layer, a molecular sieve moisture-resistant layer and an outer protective layer which are sequentially coated outside the conductor from inside to outside. The heat-resistant grade of the moisture-resistant and high-temperature-resistant wire can reach 600 DEG C; the characteristics of specific adsorption of the nanoscale molecular sieve on water vapor and desorption in a heating state are combined, so that the water vapor blocking function is achieved in a high-humidity environment, desorption can be achieved at a high temperature to remove residual water molecules, insulation failure caused by water vapor permeation can be reduced, the reliability is greatly improved, and the service life is greatly prolonged; good insulation performance can still be maintained after high-frequency vibration; the cable can be used in a high-temperature, high-humidity and high-frequency vibration environment, and the high-temperature resistance, the moisture resistance and the vibration resistance of a signal or power transmission wire are improved.

The invention relates to the technical field of magnetic materials, in particular to a ferrite neodymium iron boron composite magnetic material and a preparation method thereof. The ferrite neodymium iron boron composite magnetic material comprises the following raw materials in parts by weight: 20-30 parts of ferrite magnetic powder, 40-50 parts of neodymium iron boron magnetic powder, 5-10 parts of silicon dioxide, 2-5 parts of carbon nanotubes, 0.5-1 part of polyethylene and 0.5-2 parts of polyimide. The high-temperature-resistant and corrosion-resistant permanent magnet has high magnet performance and also has high-temperature-resistant performance and corrosion-resistant performance.

The invention relates to the technical field of aluminum alloy materials, in particular to a high-temperature-resistant and high-strength aluminum alloy material and a preparation method thereof. The problems that an existing aluminum alloy material is insufficient in mechanical property and poor in high temperature resistance are solved. A plurality of strengthening elements with synergistic effects, including copper, magnesium, scandium, zirconium, nickel, manganese and titanium, are introduced into an aluminum alloy matrix, meanwhile, multiple layers of graphene nanosheets are added for step-by-step smelting, and under argon protection, hexachloroethane refining and lithium salt complexing agent grain refinement are performed to prepare a smelted alloy; and by combining the multi-stage refined smelting, the staged heat treatment process, the three-stage aging treatment and the surface modification process, the microstructure is optimized, and meanwhile the surface performance is improved. According to the prepared aluminum alloy material, through multi-element cooperation and multi-process optimization, the mechanical property, the high temperature resistance and the surface oxidation resistance of aluminum alloy are remarkably improved, and the aluminum alloy material is suitable for the field of aerospace.

The invention discloses a novel high-temperature-resistant and corrosion-resistant aluminum alloy plastic-lined PP-RCT composite pipe, and relates to the technical field of composite pipelines. The composite pipe is of a five-layer gradient composite structure, wherein the outer layer is an anodized aluminum alloy base body, and the inner surface is provided with laser micro-texture anchoring points; the secondary layer is a chromium-free Dacromet anti-corrosion layer, and the interface bonding force is improved through a three-dimensional network structure; the third layer is a gradient curing bonding layer which is cured by stages to eliminate thermal stress; the fourth layer is a dynamic stress compensation layer for absorbing the thermal expansion difference between the metal layer and the plastic layer; and the inner layer is a PP-RCT functional layer which has high temperature resistance and corrosion resistance. The end of the composite pipe is sealed through laser welding, an embedded intelligent monitoring system is integrated, and axial stress and temperature are monitored in real time. Compared with the prior art, the invention is suitable for pipeline systems under extreme working conditions of petrochemical engineering, ocean engineering, high-temperature fluid transportation and the like.

The invention provides a corrosion-resistant and high-temperature-resistant composite quartz crucible and a preparation method thereof. The quartz crucible sequentially comprises the following laminated layers in parts by weight from inside to outside: 50-100 parts of an inner layer, 200-400 parts of a transition layer, 150-250 parts of a reinforcing layer and 40-80 parts of an outer layer, the preparation method comprises the following steps: forming layer by layer: sequentially adding inner-layer slurry, transition-layer powder, a reinforcement-layer prefabricated member and outer-layer slurry into a mold for forming; gradient drying is conducted, specifically, the formed crucible blank is put into a drying box to be subjected to gradient drying; and step-by-step sintering: putting the dried crucible blank into a high-temperature sintering furnace, carrying out step-by-step sintering, and cooling and demolding to obtain a crucible product. A composite protection system is designed and constructed through four layers of functionally graded materials, the prepared composite quartz crucible has excellent high temperature resistance, corrosion resistance and structural stability and can be applied to large-size semiconductor single crystal furnaces, and the engineering advantage of the preparation process is remarkable.

The invention relates to the field of tension and pressure sensors, in particular to a tension and pressure sensor with a compensation function, which comprises an elastic body, a strain gauge, a compensation gauge and a wiring terminal, the strain gauge and the compensation gauge are respectively arranged on the surface of the elastic body, the strain gauge, the compensation gauge and the wiring terminal are electrically connected through a plurality of high-temperature-resistant cables to form a bridge circuit, at least the strain gauge and the compensation gauge are respectively limited in the first heat insulation layer and the protection layer, and the first heat insulation layer is located between the elastic body and the protection layer. At least a first heat insulation layer used for protection, heat insulation, pressure resistance and sealing is used for wrapping a strain gauge and a compensating gauge which are packaged by a polyimide film and can resist the high temperature of 260 DEG C, so that the actual temperature of the strain gauge and the compensating gauge has a remarkable temperature difference with the current environment temperature; the actual temperature of the strain gauge and the compensating gauge is obviously lower than the environment temperature, so that the strain gauge and the compensating gauge are respectively in an ideal temperature range, and the force measurement precision of the pull pressure sensor is ensured.

The invention provides a titanium alloy nano high-temperature-resistant wear-resistant heavy-duty coating, and relates to the field of high-temperature-resistant anticorrosive coatings. The coating comprises the following raw materials in percentage by mass: 30-40% of inorganic sol or / and resin; 4-15% of nano titanium alloy slurry; 5-25% of a high-temperature-resistant and wear-resistant material; 0.1-1% of a defoaming agent; 0.5%-1.5% of a dispersing agent; 10-20% of a high-temperature-resistant and high-hardness functional pigment filler; 0.5 to 5% of nano graphene; 0.5-2% of a coupling agent; 3-30% of a diluent; and 0.2-2% of a thixotropic agent. The anticorrosive paint has the characteristics that the anticorrosive paint is safe to use, the coating can resist the temperature of 600 DEG C for a long time, the coating can resist the temperature of 800 DEG C through crosslinking of a curing agent of resin, and the coating is tough, high-temperature-resistant, strong in adhesive force, wear-resistant, hydrophobic and oleophobic in surface, smooth in surface and dust-proof.

The invention relates to the technical field of coatings, in particular to a coating suitable for niobium-silicon alloy surface high-temperature protection and a preparation method of the coating. The coating comprises the following raw materials in parts by weight: 100-120 parts of deionized water, 60-80 parts of nickel-chromium-aluminum-yttrium alloy powder, 60-80 parts of enamel glaze, 50-60 parts of filler, 20-40 parts of a binder, 10-20 parts of nano titanium dioxide and 6-10 parts of an additive. According to the invention, during preparation of the coating, through addition of the filler, the negative thermal expansion performance of zirconium tungstate in the filler and volume shrinkage of zirconium tungstate in a high-temperature state, a buffer space is provided for thermal expansion of other materials in the coating, cracks of the coating due to thermal stress are avoided, and the high-temperature resistance of the coating is improved; kH560 enhances the interfacial compatibility of zirconium tungstate, avoids agglomeration of zirconium tungstate, and enables the zirconium tungstate to be more uniformly distributed in a coating system.

The invention is applicable to the technical field of ceramic high-temperature sensors, and provides a high-temperature co-sintered multilayer special-shaped ceramic high-temperature sensor and a preparation method thereof.The ceramic high-temperature sensor sequentially comprises a protective layer, a functional layer, an insulating layer and a supporting layer, and metal electrode networks are printed on the functional layer and the supporting layer; according to the high-temperature co-sintered multilayer special-shaped ceramic high-temperature sensor, zirconium oxide and aluminum oxide are used as matrixes, lanthanum oxide and yttrium oxide are added, the microstructure and performance of ceramic are optimized, the ceramic has higher high-temperature resistance, mechanical strength and stability, the nano Al2O3 is doped with platinum-iridium alloy ink, and the high-temperature co-sintered multilayer special-shaped ceramic high-temperature sensor has the advantages that the high-temperature co-sintered multilayer special-shaped ceramic high-temperature sensor is more stable in performance. The problem of interface failure of metal and ceramic at high temperature is solved, the electrode made of high-temperature-resistant metal ink is printed on the ceramic layer through the 3D printing technology, good binding force and conductivity exist between the electrode and the ceramic layer, and the electrode can stably work in the high-temperature environment.

The invention relates to the technical field of rare earth permanent magnet materials, in particular to permanent magnet alloy powder, a preparation method thereof, a prepared permanent magnet and a method. Wherein the permanent magnet alloy powder and the permanent magnet alloy comprise the following components: REa (La1-mCems) b-Feba-Mc-Tn-Bd, and RE is at least one of Pr, Nd, Sm, Y, Gd, Tb, Dy, Ho and Yb; m is at least one of Zr, Nb, Mo, Hf, Mn, Ta and W; t is at least one of Cr, V, Si and Ti; wherein 0 < a < = 2.0, 11 < = b < = 13.5, 0 < = c < = 1.5, 6 < = d < = 8.1, 0 < = m < = 1, and 0 < n < = 3.0. According to the permanent magnet alloy powder, lanthanum and cerium are adopted to replace part of precious rare earth elements to prepare the permanent magnet alloy powder, the cost can be greatly reduced, the oxidation resistance is improved and the flammability is reduced through a small amount of refractory metal M and antioxidant reinforced metal T matched elements, and the problem that a pure praseodymium neodymium-lanthanum cerium / cerium-based iron boron material is poor in temperature resistance and oxidation resistance is solved.

The invention provides an Al-Nb co-coated ternary positive electrode material and a preparation method and application thereof, and belongs to the technical field of ternary lithium ion battery nickel cobalt lithium manganate positive electrode materials, the Al-Nb co-coated ternary positive electrode material comprises a ternary positive electrode material and a coating layer, the surface of the ternary positive electrode material is coated with the coating layer, the chemical formula of the ternary positive electrode material is LiNixCoyMn1-x-yO2, x is larger than or equal to 0.8 and smaller than 0.95, y is larger than 0, and y is larger than 0. 1-x-y is not equal to 0, the coating layer comprises Al2O3 and LiNbO3, and the mass ratio of Al2O3 to LiNbO3 is 1: (1-0.4). According to the invention, the Al2O3 coating layer can be used as a barrier, so that direct contact between the nickel-cobalt-manganese ternary positive electrode material and an electrolyte is effectively reduced, possible side reactions are inhibited, and transition metal ions in the nickel-cobalt-manganese ternary positive electrode material are prevented from being dispersed into the electrolyte; liNbO3 has relatively high Li < + > conductivity, and as a nickel-cobalt-manganese ternary positive electrode material coating layer, the LiNbO3 can effectively improve the transmission efficiency of lithium ions, improve the electrochemical performance of the positive electrode material, enhance the interface stability and improve the high temperature resistance at the same time.

The invention aims to provide an ultrasonic transducer capable of continuously and stably working in a high-temperature and high-pressure extreme environment, and belongs to the technical field of ultrasonic nondestructive testing, the ultrasonic transducer comprises a packaging matching layer, a piezoelectric layer, an electrode layer and a backing layer, the packaging matching layer can have the effects of high temperature resistance, high pressure resistance and heat dissipation so as to match acoustic impedance, and the piezoelectric layer is arranged on the backing layer. Therefore, the acoustic performance of the transducer is improved. The piezoelectric layer can keep excellent piezoelectric performance in a high-temperature environment. The electrode layer and the back lining layer can achieve a good heat dissipation effect, and the service life is prolonged. The method has a wide application prospect in the field of ultrasonic nondestructive testing in an extreme environment.

The invention discloses an easy-to-bend copper bar cable which comprises a flat copper bar conductor with the section thickness of 2.95 mm to 3.05 mm, the section width of 15.90 mm to 16.10 mm and the sectional area of 48 mm < 2 >, and an insulating layer which is made of a nylon material and wraps the copper bar conductor, the average thickness of the insulating layer is 0.55 mm to 0.65 mm, the minimum local thickness of the insulating layer is larger than or equal to 0.48 mm, the height of the outer contour of the insulating layer is 4.2 mm, and the thickness of the outer contour of the insulating layer is 4.2 mm. The width of the insulating layer is 17.2 mm, and the surface roughness Ra of the insulating layer is less than or equal to 0.8 [mu] m. The electric connector has the characteristics of temperature resistance, aging resistance and chemical corrosion resistance, supports customized designs such as end stamping and tin plating, is convenient to mount, reduces the occupied space by 30%, and remarkably improves the reliability and durability of electrical connection and the system integration efficiency.

The invention belongs to the technical field of electrical system loops, and relates to a system loop matching design method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining load parameters in a system loop; calculating a load current according to the load parameter; according to a load current, selecting a fuse, defining a temperature resistance grade, and selecting a cable diameter; according to the selected fuse, the defined temperature resistance grade and the selected cable diameter, performing overcurrent matching checking, judging whether the overcurrent matching checking is passed or not, and if yes, performing temperature rise checking; judging whether the temperature rise checking is passed or not, and if so, checking the fuming time; and judging whether the verification of the fuming time is passed or not, and if so, carrying out electrical performance test confirmation. Multiple aspects such as electrical element performance, environmental factors and frequency factors are comprehensively considered, and the accuracy and reliability of the high-voltage system in the design process are ensured; failure risks can be effectively avoided, the safety and stability of the system are improved, and powerful support is provided for electric development of automobiles.

The utility model provides a thermal runaway temperature sensor with high thermal conductivity, high temperature resistance and high voltage resistance, which comprises an insulating high-temperature-resistant packaging sleeve, a temperature sensing resistor, a lead electrically connected with an external circuit, and a high-thermal-conductivity shell, the temperature-sensitive resistor and a welding point of the temperature-sensitive resistor and the wire are wrapped and packaged in an insulating high-temperature-resistant packaging sleeve to form a temperature-sensitive resistor insulating temperature-resistant wrapping head, the whole temperature-sensitive resistor insulating temperature-resistant wrapping head extends into a high-heat-conduction shell, the shell is filled with high-temperature-resistant pouring sealant, and the other end of the wire extends out of the shell. The insulating high-temperature-resistant packaging sleeve adopts a high-temperature-resistant heat-shrinkable tube, and the high-temperature-resistant heat-shrinkable tube is encapsulated, so that the curing time of a common packaging material is shortened, and the production efficiency is improved; the high-temperature-resistant heat shrink tube not only enables the temperature sensor product to have the advantage of high temperature resistance, but also has better physical insulation and special voltage resistance than common packaging materials, and improves the insulation and voltage resistance of the temperature sensor product.

The invention discloses a temperature self-compensation Wheatstone bridge structure, and relates to the field of Wheatstone bridges, at least one group of sub-strain gauges which are separated from adjacent arms, are mutually compatible and are attached to the same area of the same elastic beam exist in a four-arm resistor of the Wheatstone bridge structure; the temperature resistance change trends of the compatible sub strain gauges tend to be the same; wherein each group of compatible two sub-strain gauges are closely attached to each other so that the two sub-strain gauges are located in the same area of the same elastic beam, so that the two closely attached sub-strain gauges generate homodromous temperature resistance variation, resistance temperature drift caused by local temperature difference of different arms is counteracted, and temperature self-compensation is realized. According to the invention, temperature compensation can be carried out on the local temperature difference of the force sensor, so that the measurement accuracy of the six-dimensional force sensor is improved.

The invention provides a preparation method of a metal surface hard welding layer, and belongs to the technical field of metal material surface treatment. The modified tungsten-cobalt carbide is used for preparing the hard alloy, the nickel-based alloy powder and the metal ceramic particles are used together, the composite hard welding layer is obtained on the surface of the steel part base material, the hardness of the welding layer is effectively improved, meanwhile, the abrasion condition of the welding layer in use is reduced, and a thermal fatigue test can be effectively borne; and good wear resistance and high temperature resistance are obtained.

The embodiment of the invention discloses a composite shielding plate and a preparation method thereof, and the composite shielding plate comprises a cladding which is provided with an accommodation space, and the accommodation space is in a vacuum state; the shielding material is arranged in the accommodating space; wherein the shielding material comprises a neutron moderation base material, and the cladding is made of a boron-containing metal material; or the shielding material comprises a neutron moderation base material and a neutron absorption base material, the cladding is made of a metal material, the neutron moderation base material comprises rare earth hydride, and the neutron absorption base material comprises boron-containing ceramic. The composite shielding plate provided by the embodiment of the invention not only comprises the neutron moderation base material which is high in hydrogen content and excellent in temperature resistance so as to effectively moderate fast neutrons, but also is combined with the neutron absorption base material containing boron atoms so as to efficiently absorb thermal neutrons, so that the complete neutron moderation-absorption integrated shielding performance of the composite shielding plate is realized; and stable shielding performance can be provided at the temperature of 300-1000 DEG C.

The invention discloses a processing technology of a double-layer hard anodic oxide film on a metal surface, relates to the technical field of aluminum alloy anodic oxidation, and provides the processing technology of the double-layer hard anodic oxide film on the metal surface in order to improve the surface hardness and high temperature resistance of aluminum alloy. The anodic oxide layers with different pores are prepared through different electrolyte components, the primary anodic oxide layer serves as a bottom layer, thermal stress between an aluminum alloy body and the oxide layers due to different thermal expansion coefficients is effectively reduced, expansion caused by thermal shock is relieved, the secondary anodic oxide layer on the surface layer has a small pore diameter, and the thermal shock resistance of the aluminum alloy body is improved. And the carbon fibers are subjected to modification treatment, so that the aluminum alloy material has relatively high hardness and a better corrosion-resistant effect, and the applicability of the aluminum alloy material to various environments is effectively improved.

The invention provides a temperature-resistant radar infrared compatible stealth coating and a preparation method thereof. The problems that an existing radar infrared compatible stealth coating is insufficient in temperature resistance and poor in low-frequency wave absorbing performance are solved. The temperature-resistant radar and infrared compatible stealth coating sequentially comprises a bonding layer, a wave absorbing layer and an infrared stealth layer from bottom to top, the bonding layer is made of NiCrAlY or NiCoCrAlY, and the bonding layer is made of NiCoCrAlY; the material of the wave absorbing layer is 20 wt%-65 wt% of a ceramic matrix and 80 wt%-35 wt% of an absorbent; the chemical formula of the absorbent is Fe0. 7Al0. 3Ti (1-x) RxO3, in the formula, x is equal to 0.2-0.55, and R is Ni, Nb or Ta; the infrared stealth layer is a precious metal layer arranged in a periodic structure.

The invention discloses a high-temperature speckle preparation method suitable for a silicon carbide ceramic-based composite material, which is characterized by comprising the following preparation steps: S1, weighing 0.1-5g of metal oxide powder, 0.05-0.5 g of stabilizer solution with the mass fraction of 1-5% and 5g of water; s2, magnetically stirring the system at 25 DEG C for 2-48 hours; s3, spraying the speckle liquid obtained in the step (2) on the surface of the SiC ceramic-based composite material by using a spray gun, and drying; and S4, carrying out a mechanical test. The speckle prepared by the method has excellent temperature resistance and high adhesive force, and is not easy to oxidize, deform or fall off.

The invention discloses metal material surface treatment equipment and a surface treatment method. The surface treatment method comprises the following steps: performing surface pretreatment on a metal matrix to form an activated matrix with target surface roughness; metal ceramic powder is directionally deposited on the surface of the activated substrate through a spraying system, and a porous substrate layer with uniform micropore channels is generated; depositing a gradient functional coating on the porous substrate layer, and dynamically adjusting the mixing proportion and the spraying angle of spraying powder to sequentially form a bottom layer bonding interface, a transition strengthening layer and a surface layer protection layer; the gradient functional coating is subjected to laser remelting treatment, and a coating interface is scanned through a multi-beam laser array, so that metallurgical bonding is achieved between the surface protection layer and the transition strengthening layer, and between the transition strengthening layer and the bottom bonding interface; in a single treatment process, multiple protection performances of high temperature resistance, corrosion resistance and fatigue resistance are synergistically improved, so that the problem of interface stripping caused by thermal expansion mismatch of a protective coating and a matrix is solved.

The invention belongs to the technical field of wire and cable preparation, and discloses a 1000 DEG C-resistant high-temperature wire and a preparation method thereof.The high-temperature wire comprises a composite conductor, a transition layer, a composite insulating layer and a protective layer from inside to outside, and the preparation method comprises the steps that 1, the composite conductor is prepared; 2, performing magnetron sputtering on a nano aluminum oxide transition layer; 3, preparing a gradient composite insulating layer; and 4, curing the quartz fiber protective layer. The whole high-temperature wire can resist the temperature of 1000 DEG C for long-term operation, the bending fatigue life exceeds 3000 times, compared with a traditional wire, the temperature resistance upper limit is improved by 40%, the occupied space is reduced by 50%, the resistance stability is improved by 6 times, and the high-reliability power transmission requirements under the extreme scenes of aero-engines, nuclear fusion devices, ultra-high-power electric arc furnaces and the like can be met.

The invention discloses a preparation method of a rare metal-doped IZO target material, and relates to the technical field of target material preparation, and the preparation method comprises the following steps: mixing an indium oxide and a zinc oxide according to a mass ratio, and adding a rare metal oxide accounting for 1-5% of the total mass of the indium oxide and the zinc oxide; carrying out wet or dry ball milling by using a ball mill to ensure that the powder is uniformly mixed; drying the mixed powder to remove excessive moisture; pressing through a cold isostatic pressing method to form a target material preform; putting the pressed target material pre-body into a high-temperature furnace, sintering in an oxygen atmosphere, controlling the sintering temperature to be 1200-1600 DEG C, and controlling the sintering time to be 4-8 hours; after sintering, the target material is subjected to annealing treatment in a low-oxygen atmosphere; and target material surface treatment. By doping the rare metal oxide, the electronic structure of the IZO target material can be effectively improved, and the conductivity and the optical performance of the IZO target material are improved; the doping of rare metals is beneficial to enhancing the stability and high temperature resistance of the material, and the material is suitable for being applied in a high-temperature environment.

Energy storage device consisting of an anode, a cathode and a solid electrolyte, characterized in that, to improve temperature resistance and operating characteristics, a graphite foil is provided as the anode and a metal foil, preferably aluminum foil, as the cathode, wherein a layer of a solid electrolyte based on a mineral binder is located between these.

The invention provides double-silver coated glass capable of being tempered in different places and a preparation method of the double-silver coated glass, and relates to the technical field of coated glass. The invention provides double-silver coated glass capable of being tempered in different places, which comprises a glass substrate, the bottom dielectric combination layer, the first Ag functional layer, the first metal sacrificial layer, the middle dielectric combination layer, the second metal sacrificial layer, the second Ag functional layer, the third metal sacrificial layer and the top dielectric protection combination layer are sequentially deposited on the surface of one side of the glass substrate from inside to outside. Each of the bottom dielectric combination layer and the middle dielectric combination layer is formed by laminating more than two dielectric layers; the top layer dielectric protection combination layer is formed by laminating more than two dielectric layers and a top layer protection layer, and the top layer protection layer is located at the outermost layer. The double-silver coated glass provided by the invention has excellent high-temperature resistance and supports remote tempering and laminated processing treatment, and the tempered product has excellent performance; and an excellent heat insulation effect is achieved.

The invention discloses a multi-layer heat insulation composite material based on a high-temperature-resistant modified alloy foil and a preparation method thereof, and belongs to the technical field of thermal protection materials.The preparation method comprises the following steps that (1) the alloy foil is subjected to high-temperature pre-oxidation treatment for a period of time in the air atmosphere, and the high-temperature-resistant modified alloy foil with good infrared radiation shielding performance is obtained; (2) alternately laminating the spacer material and the high-temperature-resistant modified alloy foil to obtain a multi-layer heat insulation composite material based on the high-temperature-resistant modified alloy foil; in the multi-layer heat insulation composite material based on the high-temperature-resistant modified alloy foil, the upper surface and the lower surface are both made of spacer materials, and a layer of high-temperature-resistant modified alloy foil reflecting screen is arranged between every two layers of spacer materials. The problem that a traditional reflecting screen system is insufficient in temperature resistance is solved, and the use environment of the multi-layer heat insulation composite material based on the metal reflecting screen is effectively widened.

The invention discloses a high-temperature-resistant titanium alloy and a preparation method thereof. The high-temperature-resistant titanium alloy comprises, by mass, 5.5%-6% of aluminum, 3.5%-4.2% of tin, 3.8%-4.5% of zirconium, 0.2%-0.4% of molybdenum, 0.8%-1.2% of tungsten, 0.2%-0.4% of niobium, 0.25%-0.4% of silicon, 0.4%-0.55% of manganese, 0.2%-0.5% of silicon carbide, 0.03%-0.06% of carbon and the balance titanium and inevitable impurities. The titanium alloy disclosed by the invention is excellent in room-temperature and high-temperature strength, relatively high in thermal stability, creep resistance and oxidation resistance and relatively high in high-temperature resistance, the room-temperature tensile strength is greater than 1100MPa, the high-temperature tensile strength at the temperature of 650 DEG C is greater than 650MPa, and the high-temperature tensile strength at the temperature of 750 DEG C is greater than 450MPa.