9 results about "Ternary phase diagram" patented technology

The invention provides a niobium-based and nickel-based alloy hot isostatic pressing connection method for designing a middle layer based on a phase diagram, and belongs to the field of connection and preparation of dissimilar materials. The method comprises the following steps: analyzing the element composition of niobium-based and nickel-based alloys to be connected as an element screening range; determining a target temperature range according to the material service temperature; calculating the Ni-X-Nb ternary phase diagram to obtain a ternary phase diagram calculation result of each alloy element to be screened and Ni and Nb combination, screening a gradient path which does not pass through a harmful IMCs phase region, and calculating the Ni-X-Nb ternary phase diagram according to the principles that the path is simplest, the alloy cost is lowest, the harmful IMCs phase region is narrowest and the coefficient of thermal expansion is most approximate. The unique alloy element composition Ni-Z-Nb capable of being used as a middle layer is determined; and preparing a Ni-Z-Nb alloy material, processing the Ni-Z-Nb alloy material into a block body with the thickness of 3-5mm, filling the block body serving as a middle layer into the outer sheath to form a diffusion couple, and performing hot isostatic pressure diffusion bonding. According to the method, the connecting effect of the niobium-based alloy and the nickel-based alloy is improved.

The invention belongs to the technical field of pharmaceutical preparations, and particularly discloses a colchicine external nano latex agent as well as a preparation method and application thereof.The colchicine external nano latex agent is prepared from the following raw materials in percentage by mass: 0.1%-1.2% of colchicine, 0.5%-25% of an oil phase matrix, 2%-20% of a surfactant, 2%-15% of a cosurfactant, 0%-15% of a transdermal absorption enhancer, 3%-3.5% of a gel matrix, 0%-0.5% of a pH regulator and the balance of water, totaling 100%. According to the colchicine external nano latex agent, the optimal prescription is obtained by applying a pseudo-ternary phase diagram and combining with D-optimal mix design, the particle size of the nano emulsion is stably controlled to be about 14 nm, and the small particle size means faster Brownian movement and stronger penetration of skin cuticle gaps or improvement of the infiltration capacity through appendages such as hair follicles, so that the colchicine external nano latex agent has a good application prospect. The skin penetration efficiency is higher than that of other prescriptions with larger particle sizes, and the nanoemulsion with small particle size hardly shows lag time.

The application discloses a kind of based on metallurgical slag component and the dynamic adjustment method of electromagnetic stirring associated with cold rolling defects, according to historical data, construct with (CaO+MgO)‑(Al2O3+SiO2)‑FeO as the vertex ternary phase diagram, and mark the defect occurrence area of the refining finished slag in ternary phase diagram corresponding to the defective furnace, and with it as basis to judge the purity of molten steel, then according to the purity of molten steel dynamically adjusts argon flow and electromagnetic stirring process, to reduce molten steel inclusions, improve slab quality.

This invention discloses a method for the directional preparation of high-purity pentazole energetic eutectic based on a ternary phase diagram. The method first determines the solubility of the pentazole salt and the eutectic ligand in a selected solvent. Then, a series of pentazole salt solutions of different concentrations are reacted with excess ligand. After reaching dissolution equilibrium, filtration and dilution are performed. High-performance liquid chromatography (HPLC) is used to determine the concentration of each component, and a ternary phase diagram of the pentazole salt-eutectic ligand-solvent system is constructed accordingly, ultimately determining the formation region of the eutectic and the optimal feed ratio. Under the optimal conditions, the pentazole salt and ligand are mixed and stirred in a specific ratio, and then filtered to obtain the high-purity pentazole eutectic product. This method is simple to operate, has a short cycle time, low cost, good reproducibility, and produces high-purity products, providing an efficient and reliable preparation route for the rapid and controllable synthesis of pentazole energetic eutectic.

The invention discloses an ultrahigh strength and toughness titanium alloy based on cluster type aided design and a preparation method, components of a TB18 titanium alloy are analyzed into cluster units capable of reflecting short-range chemical order according to an alpha solid solution and a beta solid solution, stable beta cluster boundary components are determined in a pseudo-ternary phase diagram, and the high strength and toughness titanium alloy based on cluster type aided design is obtained. The method comprises the following steps: selecting a titanium alloy with stable cluster components in a specific boundary range, performing integer adjustment on the proportion of Mo, V, Cr and Nb elements influencing the equivalent in a beta solid solution cluster, confirming the composition proportion of the ultrahigh-toughness titanium alloy, performing homogenization treatment on a suspension-smelted cast ingot, and performing forging, solid solution and aging treatment to obtain the ultrahigh-toughness titanium alloy. The tensile strength of the titanium alloy is greater than 1400 MPa, and the fracture toughness of the titanium alloy is greater than 60 MPa.m < 1 / 2 >. The ultrahigh strength and toughness titanium alloy adopting the cluster type aided design has practical application requirements in the aspects of upgrading and updating of structural parts and individual equipment in the aerospace field and the like.

The invention relates to an X7R type multilayer ceramic capacitor dielectric material and a preparation method thereof. The X7R type multilayer ceramic capacitor dielectric material is composed of a main component and auxiliary components, wherein the main component is a compound which is represented by a general formula ABO3 and has a perovskite type crystal structure, the first auxiliary component is at least one of Nb2O5 or MoO3, the second auxiliary component is an oxide of a rare earth element Re, the third auxiliary component is an oxide of Mg, and the fourth auxiliary component is an oxide of Si; relative to 1mol of ABO3 main component, the total addition amount a of Nb or Mo element is more than 0 and less than or equal to 0.1% mol, the addition amount b of Re element is more than or equal to 1.2 and less than or equal to 3.0% mol, the addition amount c of Mg element is more than or equal to 1.5 and less than or equal to 3.0% mol, and the addition amount d of Si element is more than or equal to 0.8 and less than or equal to 1.2% mol; a, b, c and d are located in a range surrounded by specific points in a ternary phase diagram formed by a + b, c and d.

The invention discloses a puerarin nanoemulsion preparation process optimization method based on a natural low cosolvent, and relates to the technical field of preparation process optimization, the method comprises the following steps: screening from a natural low cosolvent candidate system by using a COSMO-RS model to obtain a target natural low cosolvent system; designing a nano-emulsion formula system; puerarin is dissolved in the target natural low cosolvent system to prepare a puerarin aqueous phase solution, and a nano-emulsion system is prepared by adopting a dropwise adding method; constructing a pseudo-ternary phase diagram, screening and optimizing to obtain an optimized formula of the nano-emulsion, and preparing the puerarin nano-emulsion according to the optimized formula of the nano-emulsion by adopting a dropwise adding method. The technical problems of low puerarin solubility, poor stability and low nano-emulsion preparation efficiency in the prior art are solved, the purpose of efficient preparation and optimization of the puerarin nano-emulsion is achieved, and the technical effects of improving the puerarin solubility and stability are achieved.

The application discloses a heat transfer composition and a preparation method and application thereof. According to the total mass of the composition, the mass proportions of a first component, trans-1,3,3,3-tetrafluoropropene and difluoromethane are x%, y% and z% respectively, the first component is 2,3,3,3-tetrafluoropropene and 1,1-difluoroethane, the proportions (x, y, z) of the three are located in a ternary phase diagram, the x coordinate of point A is 23.6%, the x coordinate of point B is 90.0%, the coordinates of points on the curve segment AB are (x, 70.06-0.6395x-0.001538x 2 , 29.94-0.3605x+0.001538x 2 ), and the coordinates of point C are (77.6, 0, 22.4). The composition has a GWP of not more than 150 and a flammability level of A2L, is a low-global-warming-potential, high-refrigeration / heat-efficiency and low-flammability heat transfer composition for replacing propane, and is suitable for refrigeration / heat application.

The invention belongs to the technical field of weldable Ni3A1-based high-temperature alloy structure regulation and control, and particularly discloses a control method for a beta phase in a weldable Ni3A1-based high-temperature alloy, which comprises the following steps: S1, obtaining a theoretical Fe element basic addition amount when the beta phase is generated according to a Ni-Al-Fe ternary phase diagram; s2, selecting alloy proportions of different Fe element contents by adopting a control variable method; and S3, burdening and smelting are conducted, and the weldable Ni3Al-based high-temperature alloy with different beta-phase volume fractions is obtained. According to the control method for the beta phase in the weldable Ni-Al system high-temperature alloy, control over the volume fraction of the beta phase in the weldable Ni3A1-based high-temperature alloy is achieved in the two different modes of regulating and controlling the content of the Fe element and the content of the Cr element, and the weldable Ni3A1-based high-temperature alloy with the beta phases of different volume fractions is obtained; and therefore, the mechanical property of the weldable Ni3A1-based high-temperature alloy is remarkably improved.