64results about How to "High mechanical hardness" patented technology

The invention provides compound caesium potassium fluoborate and caesium potassium fluoborate non-linear optic crystal, and a preparation method and applications thereof. The chemical formula of the compound is CsKB8O12F2, the molecular weight is 488.48, and the compound is prepared via solid phase synthesis or vacuum packaging method. The chemical formula of the caesium potassium fluoborate non-linear optic crystal is CsKB8O12F2, the molecular weight is 488.48, the caesium potassium fluoborate non-linear optic crystal belongs to trigonal system, the space group is P321, the cell parameters a=b=6.598 angstroms, c=7.652 angstroms, alpha=beta=90 DEG, gamma=120 DEG, unit-cell volume is 288.5 angstroms, the frequency-doubled effect is about 2 times of that of KH2PO4(KDP), the UV absorption edge ranges from 150 to 200nm. Crystal growth of CsKB8O12F2 is realized via high temperature molten method, vacuum packaging method, hydrothermal method, or room temperature solution method; deliquescence of the crystal is not caused in the air; the chemical stability is excellent; and the crystal can be used in all-solid-state lasers as an ultraviolet, deep ultraviolet non-linear optic crystal.

The invention provides a compound caesium rubidium fluorborate, a caesium rubidium fluorborate nonlinear optical crystal, a preparation method and application. The compound has a chemical formula of CsRbB8O12F2 and a molecular weight of 534.86, and is prepared by solid phase synthesis or vacuum encapsulation method. The crystal has a chemical formula of CsRbB8O12F2 and a molecular weight of 534.86, belongs to hexagonal crystal system, has a space group of P-62c, the cell parameters of a=b=6.5878 angstrom, c=7.813 angstrom, alpha=beta=90 degrees, gamma=120 degrees, and a unit cell volume of 293.6 angstrom<3>. The frequency-doubled effect of the crystal is 2 times that of KH2PO4(KDP), and the ultraviolet absorption edge is 150-200nm. CsRbB8O12F2 adopts high temperature melt liquid method, vacuum encapsulation method, hydrothermal method or room temperature solution method for crystal growth, the crystal has the advantages of no deliquescence in the air and good chemical stability, and can be applied as ultraviolet and deep ultraviolet nonlinear optical crystal in all-solid-state lasers.

An electrochromic layer structure with at least one active layer (100) and at least two electrodes (102; 104) is described. At least one of the electrodes (102; 104) has an electrically conductive network (110; 202) of conductor tracks and the conductor tracks contain nanoparticles (300). An electrochromic device, a method for production of an electrochromic layer structure and use of an electrochromic layer structure and an electrochromic device are also described.

A perpendicular magnetic recording disk has a granular cobalt alloy recording layer (RL) containing on the “soft” magnetic underlayer (SUL). The SUL is doped with judiciously chosen elements or alloys or is capped or intercalated with said elements or metal alloy layers. The resulting disk and the SUL in particular has good recording properties, improved mechanical strength and improved corrosion resistance over a comparable disk without the doping or thin layers.

A disc device has a plurality of arms configured to support the outer rim of a disc carryable. Automatic loading is applied such that the disc inserted can be carried in the device, and the disc housed inside the device can be carried out of the device. A pair of shutter pieces are located on the central portion of a slot in a front bezel to be used to insert the disc therethrough and are spaced at a certain interval. The shutter piece rotates about one end thereof to raise/tumble the other end thereof. The tumbled shutter piece changes to the raised state after the disc is housed in the device while the shutter piece changes to the tumbled state before the disc housed inside the device is carried out of the device.

The invention relates to a three-dimensional, ceramic component containing silicon carbide, to a method for producing the component, and to the use of the component. The method for producing a three-dimensional, ceramic component containing silicon carbide comprises the following steps: a) providing a powdery composition having a grain size (d50) between 3 microns and 500 microns and comprising atleast 50 wt% of coke, b) providing a liquid binder, c) depositing a layer of the material provided in a) in a planar manner and locally depositing drops of the material provided in b) onto said layerand repeating step c), wherein the local depositing of the drops in the subsequent repetitions of said step is adapted in accordance with the desired shape of the component to be produced, d) at least partially curing or drying the binder and obtaining a green body having the desired shape of the component, e) carbonizing the green body, and f) siliconizing the carbonized green body by infiltration with liquid silicon, wherein the green body, while above the melting temperature of silicon and while located substantially above the surface of a silicon bath, becomes saturated with silicon by capillary forces.

The invention belongs to the technical field of lithium ion batteries and particularly relates to a lithium ion battery package casing. The lithium ion battery package casing is of a two-layer structure, wherein an outer layer of the lithium ion battery package casing is a vacuum-deposited metal layer; and an inner layer of the lithium ion battery package casing is a plastic structure layer. Compared with the prior art, the lithium ion battery package casing disclosed by the invention has the characteristics of high strength, lightness, thinness and low possibility of leaking electrolyte, and can meet special requirements of various kinds of portable equipment for the shape of the battery. Meanwhile, the vacuum-deposited metal layer as the outer layer can also be directly used as a casing of the portable equipment without being additionally processed, so that the production cost is saved. In addition, the invention further discloses a lithium ion battery containing the package casing as well as a power supply adopting the lithium ion battery for the portable equipment.

The invention discloses a zinc alloy material. The zinc alloy material is prepared from, by mass, 5.2%-8.25% of iron, 1.25%-2.1% of copper, 1.15%-1.4% of nickel, 0.32%-0.52% of tungsten, 0.12%-0.23% of ruthenium, 0.06%-0.09% of vanadium, 0.23%-0.39% of cobalt, 0.02%-0.06% of beryllium and the balance zinc. The invention further discloses a preparation method of the alloy material. The zinc alloy material is high in mechanical hardness, good in abrasion-resisting effect, extremely excellent in tenacity and extremely suitable for certain mechanical parts having special requirements for the mechanical performance; the zinc alloy material is light, low in cost and quite suitable for application and popularization.

The invention discloses a broadband coplanar waveguide semi-elliptical slot antenna array structure in millimeter wave antenna level packaging, relates to the technical field of antenna arrays, and solves the problem of how to design an antenna array which is large in array bandwidth, high in gain, easy to integrate and suitable for a narrow, long and straight scene. The antenna comprises an antenna array radiation assembly, an antenna array feed assembly and a GCPW-to-CPW transition structure. The antenna array feed assembly excites a corresponding antenna unit through a GCPW-to-CPW transition structure and a rectangular CPW feed line. The antenna unit comprises an etched semi-elliptical gap of a first metal grounding plate on the upper surface of a microwave dielectric substrate and an open-circuit fan-shaped branch knot. The semi-elliptical gap is a gap etched by the fan-shaped outer edge of the fan-shaped branch knot and the first metal grounding plate; the distance between the midpoint of the chord corresponding to the fan-shaped arc of the open-circuit fan-shaped branch knot and the surrounding first metal grounding plate is gradually changed according to a semi-ellipse, andcompared with a traditional circular and elliptical slot structure, the slot width is reduced, the array radiation effect is improved, and the array bandwidth and gain are larger.

The invention provides a magnetic circuit structure of a washer variable frequency DC motor, and relates to the technical field of washers. The magnetic circuit structure of the washer variable frequency DC motor comprises a stator iron core, magnetic shoes are arranged on the outer circumference of the stator iron core, and a magnetic yoke is arranged outside the magnetic shoes. The magnetic circuit structure of the washer variable frequency DC motor is characterized in that an N pole and an S pole are formed in the same magnetic shoe through magnetic steel magnetizing, the magnetic shoes are circumferentially and evenly distributed on the magnetic yoke so that each pair of N pole and S pole can deflect relative to the angle of the circle center, harmonic waves of 2p and the multiple of 2p are weakened, the efficiency of the motor is improved, and meanwhile the processing technology is simplified. Twelve magnetic shoes are evenly distributed on the magnetic yoke to form a motor with 12 pairs of poles, and cogging torque can also be weakened. The entire machine working noise caused by torque fluctuation is reduced, meanwhile, the motor can achieve higher torque density, the mechanical hardness of the motor is improved, and revolution drop caused by incremental loading of the motor is reduced. Meanwhile, the system response speed is increased under the condition of the same loads, the acceleration time can be shortened, and the unit eddy-current loss of the stator iron core of the motor can further be reduced.

The invention relates to a lead barium borate compound and a lead barium borate nonlinear optical crystal and a preparation method and application, and belongs to the technical field of nonlinear optical crystals. According to the technical scheme, the chemical formula of the crystal is Pb0.81Ba8.19B18O36, the molecular weight is 2063.14, the crystal belongs to a hexagonal system, the space group is R32, cell parameters are that a=7.2116(7) angstroms, c=19.226(4) angstroms, Z=1, V=865.9(2) cubic angstroms, the powder frequency-doubling effect reaches one third time that of KDP, the transparency range is wider, and the transparency wave band ranges from 310 nm to 2600 nm. The lead barium borate compound and the lead barium borate nonlinear optical crystal and the preparation method and application have the advantage that the compound is synthesized through a solid phase reaction method, the crystal is grown through a co-solvent method, the crystal is easy to operate, low in cost, large in size, short in growth cycle, few in inclusion, large in mechanical hardness and easy to cut, polish and preserve, and the lead barium borate nonlinear optical crystal can be widely applied in nonlinear optical devices such as frequency-doubling conversion and optical parametric oscillators.

The present application relates to a barrier membrane for guiding bone regeneration technology. The barrier membrane comprises two layers of first absorbable films and a supporting layer clamped between the two layers of first absorbable films, the supporting layer comprises at least one supporting piece, and the supporting piece is made of magnesium alloy.

The invention discloses a water-based metal priming paint for vehicles, and belongs to the technical field of paint coatings. According to the water-based metal priming paint for the vehicle, a water-based acrylic dispersion, a water-based acrylic polyurethane dispersion and a water-based polyurethane dispersion are compounded in proportion, so that the obtained product is more environment-friendly than traditional oil-based vehicle paint, and meanwhile, the defects that the water-based vehicle paint is low in resistance and paint is easy to fall off are overcome; when the product is used forspraying paint on vehicles, a paint film connection port is smooth in transition, silver powder is arranged well, and the interlayer adhesive force is excellent; the paint has the advantages of favorable water resistance, favorable high-temperature resistance, favorable weather resistance, favorable acid resistance, favorable alkali resistance, favorable gasoline resistance, favorable engine oil resistance, high hardness, and high toughness and favorable MEK wiping resistance, and is suitable for large vehicles such as coaches, refitted vehicles, rail transit vehicle bodies and the like. The invention also discloses a preparation method of the water-based metal base color paint for vehicles, and the preparation method is environment-friendly and economic, has simple operation steps, and can be used for industrial large-scale production.

A method of making SiC nanowires comprising: (a) mixing silicon powder with a carbon-containing biopolymer and a catalyst at room temperature to form a mixture; and (b) heating said mixture to a pyrolyzing temperature sufficient to react said biopolymer and said silicon power to form SiC nanowires.

The invention provides an iron-based amorphous magnetically soft alloy magnetic powder core with an organic-inorganic mixed coating and a preparation method of the iron-based amorphous magnetically soft alloy magnetic powder core. The magnetic powder core is prepared from the following raw materials: FeSiCr amorphous magnetic powder, nano metal oxide, tetrabutyl titanate, polyvinylpyrrolidone, AlN, TiB2, WC, 3-glycyloxy propyl trimethoxy silane, xylene and polysiloxane resin. According to the preparation method, polysiloxane resin is used for forming an outermost organic coating, the nano metal oxide, AlN, TiB2 and WC are used for forming a middle wrapping layer to wrap the FeSiCr amorphous magnetic powder on the innermost layer, thus the polysiloxane resin wrapped AlN/TiB2/WC/nano metal oxide-FeSiCr amorphous magnetic powder is obtained, and the final ring-shaped magnetic powder core prepared by using the magnetic powder core has the advantages of high mechanical property, high resistivity, high magnetic conductivity and low magnetic loss due to the organic and inorganic double-layer coating.