58 results about "Ternary phase diagram" patented technology

A positive active material for lithium secondary batteries, includes a composite oxide including an oxide which is represented by the composite formula Li_xMn_aNi_bCo_cO₂ and has an α-NaFeO₂ structure, and an impurity phase including Li₂MnO₃. The values a, b, and c are within such a range that in a ternary phase diagram showing the relationship among these, (a, b, c) is present on the perimeter of or inside the quadrilateral ABCD defined by point A (0.5, 0.5, 0), point B (0.55, 0.45, 0), point C (0.55, 0.15, 0.30), and point D (0.15, 0.15, 0.7) as vertexes, and 0.95<x/(a+b+c)<1.35.

The present invention provides an active material for a lithium secondary battery with a high discharge capacity, particularly for a lithium secondary battery that can increase the discharge capacity in a potential region of 4.3 V or lower, a method for producing the same, a lithium secondary battery having a high discharge capacity, and a method for producing the same. The active material for a lithium secondary battery includes a solid solution of a lithium transition metal composite oxide having an α-NaFeO₂ type crystal structure, in which the composition ratio of Li, Co, Ni, and Mn contained in the solid solution satisfies Li_1+(1/3)xCo_1−x−yNi_(1/2)yMn_{(2/3)x+(1/2)y} (x+y≦1, 0≦y and 1−x−y=z); in an Li[Li_1/3Mn_2/3]O₂(x)-LiNi_1/2Mn_1/2O₂(y)-LiCoO₂(z) type ternary phase diagram, (x, y, z) is represented by values in a range present on or within a line of a heptagon (ABCDEFG) defined by the vertexes; point A(0.45, 0.55, 0), point B(0.63, 0.37, 0), point C(0.7, 0.25, 0.05), point D(0.67, 0.18, 0.15), point E(0.75, 0, 0.25), point F(0.55, 0, 0.45), and point G(0.45, 0.2, 0.35); and the intensity ratio between the diffraction peaks on (003) plane and (104) plane measured by X-ray diffractometry before charge-discharge is I₍₀₀₃₎/I₍₁₀₄₎≧1.56 and at the end of discharge is I₍₀₀₃₎/I₍₁₀₄₎>1. The invention provides a method for producing the active material for a lithium secondary battery using a coprecipitation method, a lithium secondary battery including a positive electrode containing the active material and a method for producing the lithium secondary battery.

The present invention aims at providing a chemically stabilized inorganic phosphor, among oxynitride phosphors including alkaline earths, which oxynitride phosphor emits orange or red light at longer wavelengths at higher luminance than conventional sialon phosphors activated by rare earths. The present invention further aims at providing a light emitting instrument based on the phosphor, for a lighting instrument excellent in color rendering property and for an image displaying apparatus excellent in durability.

The solving means resides in provision of a fundamental phosphor comprising:

• • a composition on a pseudo-ternary phase diagram including AO (A is one kind or two or more kinds of element(s) selected from Mg, Ca, Sr, and Ba; and AO is oxide of A), Si₃N₄, and SiO₂ as end members, respectively, and satisfying all of the following conditions:
  • in a composition formula, pAO-qSi₃N₄-rSiO₂ (p+q+r=1),

0.1≦p≦0.95,   (1)

0.05≦q≦0.9, and   (2)

0≦r≦0.5, and   (3)

• • at least a metallic element M (M is one kind or two or more kinds of element(s) selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb) dissolved, in a solid state, in the composition.

[Object] To provide piezoelectric/electrostrictive ceramics and a piezoelectric/electrostrictive element with a large electric field-induced strain without performing an aging treatment.

[Solving Means] Piezoelectric/electrostrictive ceramics have the composition represented by the general formula: xBNT-yBKT-zBT (x+y+z=1) wherein at least one kind among A-site elements are allowed to become deficient from stoichiometry in which a point (x, y, z) representing content ratios x, y and z of (Bi_1/2Na_1/2)TiO₃, (Bi_1/2K_1/2)TiO₃ and BaTiO₃ is within a range (also including a border line) of a quadrangle ABCD with a point A, a point B, a point C and a point D as vertices in a ternary phase diagram. Vacancies are formed in an A-site of a perovskite structure by allowing the A-site elements to become deficient from stoichiometry. An amount of A-site vacancies becomes at least 2 mol % to at most 6 mol %.

The invention provides a Bi0.5Na0.5TiO3-BaTiO3-BiMg0.5Ti0.5O3 lead-free piezoelectric ceramic material, relates to a multicomponent system lead-free piezoelectric ceramic compound and belongs to the perovskite structure piezoelectric ceramic field. The composition provided by the invention can be expressed by a general formula of xBi0.5Na0.5TiO3-yBaTiO3-zBiMg0.5Ti0.5O3, wherein the numeric area of x, y and z is indicated by the shadow area of a ternary phase diagram (the area comprises the boundary line). The lead-free piezoelectric ceramic composition further contains oxide Bi2O3; and the content of oxide Bi2O3 is 1% of the content of Bi ions in the composition. The coercive field of the system changes with the three-component system components between 20kV/cm and 40 kV/cm; the piezoelectric coefficient d33 and the electromechanical coupling coefficient Kp are increased with the increase of the value of y in the polarizable component range; d33 is unequal from 100pC/N to 170 pC/N, while Kp is from 0.1 to 0.3. Besides, the depolarization temperature of the ceramics is slightly reduced between 80 DEG C and 120 DEG C with the increase of y.

Provided is an epitaxial substrate having excellent two-dimensional electron gas characteristics and reduced internal stress due to strains. A channel layer is formed of a first group III nitride represented by In_x1Al_y1Ga_z1N (x1+y1+z1=1) so as to have a composition in a range determined by x1=0 and 0≦y1≦0.3. A barrier layer is formed of a second group III nitride represented by In_x2Al_y2Ga_z2N (x2+y2+z2=1) so as to have a composition, in a ternary phase diagram with InN, AlN and GaN being vertices, in a range surrounded by five straight lines determined in accordance with the composition (AlN molar fraction) of the first group III nitride.

Provided is a semiconductor device of normally-off operation type having a low on-resistance. An epitaxial substrate for it includes: a base substrate; a channel layer made of a first group-III nitride having a composition of In_x1Al_y1Ga_z1N at least containing Al and Ga and x1=0 and 0≦y1≦0.3; and a barrier layer made of a second group-III nitride having a composition of In_x2Al_y2Ga_z2N at least containing In and Al. The composition of the second group-III nitride is, in a ternary phase diagram for InN, AlN, and GaN, in a certain range that is determined in accordance with the composition of the first group-III nitride. The barrier layer has a thickness of 3 nm or less. A low-crystallinity insulating layer is further formed on the barrier layer. The low-crystallinity insulating layer is made of silicon nitride and has a thickness of 3 nm or less.

The invention discloses a two-dimensional continuous component sample and a preparing method and application thereof in quick determination of phase diagram high flux. The two-dimensional continuous component sample is a sheet in an equilateral triangle shape, and the component distribution of the two-dimensional continuous component sample is the same as that of a ternary phase diagram expressed by the equilateral triangle. The two-dimensional continuous component sample can be prepared with a solid reaction method, a 3d printing method and a slurry or turbid liquid mixing method, and is subjected to annealing or quenching at the proper temperature to meet the application of phase diagram determination and material screening. According to the two-dimensional continuous component sample and the preparing method and application thereof in quick determination of phase diagram high flux, the number of samples, with different components, synthesized at a single time can be greatly increased, and higher-flux sample support can be provided for high-flux material screening and ternary phase diagram quick determination.

The invention discloses a method for forecasting the ash fusion point variation trend after coal and sludge combined firing. The method comprises the following steps: (1) drying a coal and sludge mixed sample, splitting, grinding, screening the processed mixed sample with a sieve, and drying the mixed sample powder passing through the sieve; (2) preparing an ash sample by adopting a rapid ashing method; (3) performing ash composition analysis on the ash sample, and detecting the species and the contents of mineral constituents; (4) selecting three mineral constituents with the maximum content and selecting corresponding ternary phase diagrams; (5) labeling points on which coal and sludge are located on the ternary phase diagrams and connecting the points on which the coal and the sludge are located into a line; and (6) obtaining the ash fusion point variation trend along with the content of the sludge in the mixed sample. The method can be used for quickly and effectively forecasting the ash fusion point variation trend of the coal and sludge mixed sample along with the content of the sludge to bring convenience for efficiently determining the species of the coal and the sludge in the coal and sludge mixed sample and the ash fusion property variations probably caused after the coal is mixed with the sludge in the initial stage.

The invention provides a production method of deformation-resistant fusion-cast zirconia corundum. The deformation-resistant fusion-cast zirconia corundum is prepared by 20 to 60 percent of clinker and 40 to 80 percent of raw material, wherein the clinker is prepared from the following raw materials: 1.2 to 1.6 percent of sodium oxide, 25 to 33 percent of zirconium oxide, 17 to 19 percent of silicon oxide and 46 to 53 percent of aluminum oxide, and the raw material is prepared from the following raw materials by weight percent: 20 to 50 percent of zircon sand, 38 to 67 percent of calcined aluminum oxide powder, 6 to 20 percent of desilicated zirconia and 1 to 3 percent of sodium carbonate. A main chemical component of the fusion-cast zirconia corundum still belongs to a ternary phase diagram of Al2O3.ZRO2.SiO2, the original advantages of the fusion-cast zirconia corundum brick are sufficiently reserved; and however, by adding main components of baddeleyite and controlling the introduction of impurities, the tensile strength is improved, the deformation rate under the condition of 1500 DEG C can be reduced to 1.2 percent or smaller for 4 hours, the pollution on glass fluid is reduced, the glass quality is improved, and the production method is particularly suitable for producing and manufacturing top-grade glass.

An epitaxial substrate having preferable two dimensional electron gas characteristic and contact characteristic is provided in the present invention. A channel layer is formed on a base substrate with GaN. A spacer layer is formed on the channel layer with AlN. A barrier layer is formed on the spacer layer with group III nitride having a composition of In_XAl_yGa_zN (wherein x+y+z=1) and at least including In, Al, and Ga such that the composition of the barrier layer is within the range surrounded with four lines defined in accordance with the composition on a ternary phase diagram with InN, AlN, and GaN as vertexes.

The invention relates to construction of Tween 80-based biocompatible microemulsion and in vitro release and oxidation resistance study of carried apigenin. A pseudo-ternary phase diagram is adopted for constructing Tween80/IPM/PEG400/H2O biocompatible microemulsion, and partition is carried out by utilizing conductivity, so that structure of the microemulsion is changed from a bicontinuous phase(B.C.) to an O/W type. Further the O/W type microemulsion is selected as an apigenin carrier, saturation solubility experiments show that the constructed microemulsion obviously improves solubility ofthe apigenin, and compared with the solubility in water, the solubility is improved by 300 times when the microemulsion is taken as the carrier. In vitro release experiments show that the microemulsion has better slow-release effect on the apigenin, and a releasing process of the apigenin in the microemulsion accords with first-order kinetics and is under concentration diffusion control. A medicine still has better antioxidant activity in the microemulsion and has better clearing effect on ABTS<+>.. Release rate of the apigenin in the microemulsion, accumulated release rate and antioxidant activity can be regulated and controlled by changing a mass ratio of a surfactant to oil (S/O) and water content.

Provided is an epitaxial substrate capable of manufacturing a HEMT device that has excellent two-dimensional electron gas characteristics and is capable of performing normally-off operation. A channel layer is formed of a first group III nitride represented by In_x1Al_y1Ga_z1N (x1+y1+z1=1) so as to have a composition in a range determined by x1=0 and 0≦y1≦0.3. A barrier layer is formed of a second group III nitride represented by In_x2Al_y2Ga_z2N (x2+y2+z2=1) so as to have a composition, in a ternary phase diagram with InN, AlN and GaN being vertices, in a range surrounded by four straight lines determined in accordance with the composition (AlN molar fraction) of the first group III nitride and to have a thickness of 5 nm or less.

The invention discloses a design method of a spherical or sphere-like lithium ion battery material based on Ni-Co-Mn ternary phase diagram analysis. A positive material is designed as follows: a core component is positioned at a high-capacity area (Ni is more than or equal to 0.7 and less than or equal to 1, and Co is more than or equal to 0 and less than or equal to 0.3) of a phase diagram according to the influence of different contents of Ni, Co and Mn to the performances of the positive material, and a shell material is positioned in a high-safety area (Ni is more than or equal to 1/3 and less than or equal to 0.5, and Mn is more than or equal to 1/3 and less than or equal to 0.5), so that the Li[(NinCo(1-m-n)Mnm)b(NicCodMn(1-c-d)a)]O2 material has high safety and compounding performances of a high-capacity material, wherein a is more than or equal to 0, b is less than or equal to 1, a+b is equal to 1, n is more than or equal to 1/3 and less than or equal to 0.5, m is more than or equal to 1/3 and less than or equal to 0.5, d is more than or equal to 0.7 and less than or equal to 1, c is more than or equal to 0 and less than or equal to 0.3, and d+c is less than or equal to 1. A core-shell structure material can show high specific capacity, high circulatory stability and high safety by the complementation of core and shell functions of the core-shell structure. Compared with a homogeneous-phase multielement material, the material disclosed by the invention has the advantages that the large-scale preparation cost is not increased, the repeatability is high, the batch stability is good, the production management is facilitated, and the large-scale commercialization application needs can be met.

The invention discloses thymol nanoemulsion and a preparation method thereof. The thymol nanoemulsion is mainly prepared from the following components in parts by weight: 30 to 50 parts of EL-40, 1 to10 parts of 1,2-propylene glycol, 1 to 10 parts of thymol and an sufficient amount of distilled water. According to the thymol nanoemulsion and the preparation method thereof, a thymol nanoemulsion prescription is screened by drawing a pseudo-ternary phase diagram, and the prepared thymol nanoemulsion has a particle size of 10 to 100nm and high stability; the obtained nanoemulsion is oil-in-watertype nanoemulsion, can be infinitely diluted with water, and under a transmission electron microscope, is spherical and nonadhesive. Detection with the transmission electron microscope shows that thediameters of drops are distributed between 10 and 100nm and the nanoemulsion is apparently yellow or colorless transparent liquid and has high stability.

The invention discloses a method for judging a mixed phase mechanism of gas with high content of hydrogen sulfide and carbon dioxide. The method comprises the following steps of: S1, collecting oil reservoir and injected gas related basic data; S2, simulating a multi-stage contact process of gas with high content of H2S and CO2 and crude oil by utilizing a phase balance calculation model, and drawing a multi-stage contact experiment quasi-ternary phase diagram of the gas with high content of H2S and CO2 under the oil reservoir temperature condition; S3, drawing a thin tube characteristic curveof the gas with high content of H2S and CO2 under the oil reservoir temperature condition by utilizing a thin tube experiment; and S4, judging the mixed phase mechanism of the gas with high content of H2S and CO2 through the quasi-ternary phase diagram in the S2 and the thin tube characteristic curve in the S3. According to the method disclosed by the invention, the mixed phase mechanism of the gas with high content of H2S and CO2 can be rapidly judged by drawing the quasi-ternary phase diagram and the thin tube characteristic curve.

The invention discloses an urban block function mixing degree expression method based on POI (Point of Interest) data, which relates to the field of urban block function research, and comprises the following steps: acquiring urban POI data information, determining the nature of the data information, classifying and cleaning the data information, acquiring an actual mixing degree and a calculated mixing degree, and acquiring a weight coefficient through Pearson correlation analysis; obtaining a function mixing index of each block, producing a ternary phase diagram, and generating different function grading statistical maps through the ternary phase diagram. An urban functional space structure is combined with POI big data, and a relatively intuitive means is provided for identifying information such as dominant functions, function mixing degrees and function change trends between streets in one time; meanwhile, the distribution characteristics and rules of the urban super block function mixture generate certain integral cognition, and influence factors in the urban super block function mixture can be further discussed on the basis of the distribution characteristics and rules.

The invention relates to a method for representing inclusions of different sizes, in tire cord steel, in ternary phase diagrams. The method comprises the steps of screening data obtained by surface distribution statistics of the inclusions, determining three main components of the inclusions in a sample, and performing normalization processing by weight percentage; then classifying the inclusions by size; and finally projecting the inclusions of the different sizes into the ternary phase diagrams in sequence, filling the ternary phase diagrams with different colors, and superposing the ternary phase diagrams in sequence to form a two-dimensional diagram and a three-dimensional diagram. The ternary phase diagrams of the inclusions of the different sizes are superposed in sequence and filled with the different colors to form a three-dimensional ternary phase diagram, so that distribution situations of the different sizes of the inclusions can be accurately and visually represented, the larger the numerical value of longitudinal coordinates is and the larger the sizes of the inclusions are, and the higher the point density is and the larger the number of the inclusions is; and by observing the ternary phase diagrams, whether the components of the inclusions fall into a region with good deformation capability or not can be known, thereby providing a favorable basis for a production process of the tire cord steel.

The invention discloses a method for preparing a W/O type arbutin lacquer wax based microemulsion. The method comprises the steps of: preparing mixed surfactants of different HLB values, and uniformlymixing the mixed surfactants with different cosurfactants proportionally, so as to obtain mixed emulsifiers marked as M1; weighing a certain amount of lacquer wax based isopropyl ester marked as M2,preparing the mixed emulsifiers and the lacquer wax based isopropyl ester in accordance with that M1: M2 is equal to (1: 9) to (9: 1), putting M1 and M2 into a beaker, and carrying out uniform stirring; placing the beaker on a magnetic stirrer, dropwise adding purified water under the condition that the revolution rate is 100r/min, and recording added water volume marked as M3 during phase change;screening out the mixed surfactant with the optimal HLB value and the cosurfactant with the optimal HLB value and a ratio of the surfactant to the cosurfactant by adopting a pseudo-ternary phase diagram method, and determining experimental parameters when a microemulsion area is maximum; preparing arbutin aqueous solutions of different concentrations, selecting an appropriate formula according toan optimized ternary phase diagram, and preparing the W/O type arbutin microemulsion. According to the method disclosed by the invention, the operation is simple, ambient conditions such as high shear and high temperatures are not required, and the W/O type arbutin microemulsion with stable properties can be spontaneously produced.

The invention discloses a 3D printing multivariate phase diagram establishing method for improving material course teaching. The method comprises the following steps of firstly carrying out the analysis of a needed ternary phase diagram, and carrying out the three-dimensional modeling of a local phase region; and finally, forming the established model by adopting a 3D technology and then carryingout assembling. The multivariate phase diagram establishing method solves the problem that the three-dimensional spatial distribution of the multivariate phase diagram is difficult to vividly expressin material phase diagram teaching, visually and efficiently displays the three-dimensional spatial distribution to students, injects new vitality for classroom teaching, helps the students visually understand the multivariate complex phase diagram, and improves the teaching quality.