54results about How to "Good physical and chemical compatibility" patented technology

Porous ceramic wall flow filter bodies of unitary or segmented construction wherein the honeycomb channels are alternately plugged with plugging cements incorporating low expansion refractory fillers and permanent inorganic bonding agents, the latter imparting improved plug integrity and plug bonding to the porous ceramic honeycomb channel walls.

The invention discloses a preparation method of a carbon/carbon composite material beta-Y2Si2O7 whisker-toughened Y2SiO5/YAS glass-ceramic composite antioxidant coating. The preparation method comprises preparing a beta-Y2Si2O7 whisker-toughened Y2SiO5 porous coating on the surface of C/C-SiC through a simple pulsed arc discharge deposition method, and preparing a YAS glass-ceramic outer coating through a thermal impregnation method. The carbon/carbon composite material beta-Y2Si2O7 whisker-toughened Y2SiO5/YAS glass-ceramic composite antioxidant coating can be well bonded to a base so that the control of the composite coating structure is realized, a preparation cycle is short and processes are simple. The coating is prepared at a low temperature and has a low cost.

The invention discloses a super-light functional master batch, which is prepared from the following components in ratio: 20-70 parts of resin, 10-50 parts of fillers, 5-20 parts of a viscosity adjusting auxiliary, 5-50 parts of a functional auxiliary, 0.1-1 part of a processing thermal stabilizer and 0.1-2 parts of a processing lubricant, wherein the resin is PP, ABS or PA; the fillers are hollow glass beads or phenolic beads; the invention further discloses a plastic product prepared from 40-60 parts of matrix plastic and 20-30 parts of super-light functional master batch; the invention further discloses a method for preparing the functional plastic through rotational molding after the matrix plastic and the functional master batch are heated to a molten/half molten state. According to the invention, after the matrix plastic and the functional master batch are heated to a certain temperature and the rotational molding is carried out, and under the effect of the centrifugal force, the matrix plastic moves towards an outer layer, so that the selective distribution of the functional auxiliary is achieved; the dosage of the functional auxiliary can be reduced and the performance of the products is improved.

The invention belongs to the field of connection of ceramic materials and dissimilar materials, and particularly relates to a ceramic and metal dissimilar material connecting method and a ceramic surface treatment process. The ceramic and metal dissimilar material connecting method includes the steps: S1 mixed solder paste preparation; S2 ceramic and metal surface treatment; S3 ceramic surface solder paste spraying and treating; S4 solder paste spraying and treated ceramic and the treated metal connection. According to the method, surfaces of ceramic parent materials are treated by grass-metalcomposite powder according to good physical and chemical compatibility between grass and ceramic, the bonding strength among surface treatment layers and the ceramic parent materials is improved, andthe surface treatment layers can be effectively moistened by metal solders, so that the ceramic is effectively connected with the ceramic/metal dissimilar materials by the metal solders.

The invention belongs to the field of pharmaceutic preparation, and specifically a linezolid oral suspension and a preparation method thereof. The linezolid oral suspension comprises the following components by weight: 0.5-2.0 parts of linezolid, 0.5-5.0 parts of sodium carboxymethyl cellulose, 0.05-0.5 part of polysorbate 80, 0.15-0.20 part of sodium citrate, 0.08-0.10 part of citric acid, 0.22-0.28 part of a preservative, 22-28 parts of sweetener, 1.2-1.8 parts of a correctant and an aqueous medium. The present invention fills the market blank of only containing tablet or injection, and provides a novel dosage form choice. The linezolid oral suspension product has good quality, can be accurately divided into the dosage based on body weight, and is easy to swallow. The preparation process is simple, feasible and reproducible, and can consistently produce linezolid oral suspension with quality meeting the requirements.

The invention relates to a preparation method of an Au modified SnO/Sn3O4/SnO2 nano composite photocatalytic material. The nano composite material is obtained by placing chloroauric acid and a tin source into a solvent, a surfactant and a reducing agent and forming chemical bond complexing among composite ingredients of the materials according to an ice salt bath and solvent combined hot wet chemical in-situ synthesis method. The composite material prepared by the invention utilizes a plasma resonance effect of Au metal nanoparticles, an excellent energy level matching heterojunction structureamong composite components of a tin oxide material and excellent electron conduction of Au metal nanoparticles, and implements rapid electron-hole separation in the process of cooperating photocatalytic oxidation and reduction degradation of pollutants with photocatalytic water splitting hydrogen production, thereby improving efficiency of photocatalytic water splitting and photocatalytic rhodamine B degradation of the Au modified SnO/Sn3O4/SnO2 nano composite photocatalytic material.

The invention relates to a preparation method of a solid oxide fuel cell catalyst, in particular to a preparation method of a metal-ceramic type Ni1-xMox/Ce1-yCayO2-delta SOFC anode catalyst taking nickel and molybdenum as metal components and taking high-performance nano Ce1-yCayO2-delta as a carrier. The anode catalyst has an excellent catalytic effect on complex hydrocarbon fuels (such as gaseous alkanes such as methane, methanol, ethanol, propane and the like and liquid alkanes such as gasoline and the like); hydrocarbons can be efficiently catalyzed and converted into fuel gas rich in H2and CO, H2 and CO reaction gas is provided for electrochemical reaction of an SOFC anode, the electrochemical reaction rate of the anode is increased, and the electrochemical performance of an SOFC monocell is improved.

The invention discloses an alloy for braze welding of high-intensity graphite and titanium alloy and a preparation method thereof. The alloy comprises the following elements in percentage by weight: 50%-65% of Ti, 30%-45% of Cu and 5%-10% of Si. The preparation method of the alloy comprises the following steps of: preparing materials according to the following elements in percentage by weight: 50%-65% of Ti, 30%-45% of Cu and 5%-10% of Si; performing vacuum electric arc smelting at a vacuum degree of 5*10<-3>-8*10<-3> Pa and at an electric arc current of 1100-1300 A; and electromagnetically stirring for 1-3 minutes, and then cooling. According to the invention, the alloy components are optimized, various chemical reaction products with good mechanical properties at high temperature are formed on the reaction interface, the braze welding temperature is effectively reduced, and the application temperature of a welded joint is increased.

The invention provides titanium nitride reinforced zirconia toughened alumina ceramic powder and a preparation method thereof, and belongs to the technical field of ceramic materials. The preparationmethod comprises the following steps: mixing an aluminum salt, a zirconium salt, a yttrium salt, a titanium salt and water to obtain a mixed water solution, wherein the aluminum salt, the zirconium salt, the yttrium salt and the titanium salt are water-soluble inorganic salts; mixing the obtained mixed water solution with an alkaline precipitant for precipitation to obtain hydroxide precipitated powder; sequentially carrying out first calcining and second calcining on the obtained hydroxide precipitated powder to obtain oxide solid solution powder; and carrying out a selective nitriding reaction on the obtained oxide solid solution powder to obtain the titanium nitride reinforced zirconia toughened alumina ceramic powder. A ceramic material obtained by carrying out hot-pressing sintering on the titanium nitride reinforced zirconia toughened alumina ceramic powder provided by the invention is high in hardness and good in conductivity.

The invention relates to a repairing method for a damaged SiC coating carbon/carbon composite material, in particular to a SiO2-Nd2O3/Si-SiC repairing system for the damaged SiC coating carbon/carbon composite material and a preparation method of the SiO2-Nd2O3/Si-SiC repairing system, and the damaged part of the SiC coating is locally repaired by adopting a SiO2-Nd2O3/Si-SiC double-layer system based on a laser cladding technology. Wherein the Si-SiC inner coating has good physical and chemical compatibility with the C/C composite material matrix and the SiC coating at the undamaged part, and the recovery of the oxidation protection performance of the repaired sample is facilitated; and the SiO2-Nd2O3 outer coating has extremely strong reflection characteristics on laser with the wave band of about 1 [mu] m, and can effectively reduce the absorption of the material on laser energy and the generation of heat, so that the secondary damage of the laser on the SiC coating is effectively prevented.

The invention relates to a connecting method for titanized Al2O3 ceramic and a Ti ring in a manmade retina. The to-be-connected titanized Al2O3 ceramic and the to-be-connected Ti ring are placed in acetone to be subjected to ultrasonic cleaning for 5 min -10 min; then, a Ti foil piece is arranged between connecting faces of the to-be-connected titanized Al2O3 ceramic and the to-be-connected Ti ring, a titanized Al2O3 ceramic/Ti foil piece/Ti ring assembling piece is assembled, the obtained assembling piece is placed in a vacuum heating furnace, the exerted pressure ranges from 1 MPa to 10 MPa, when the vacuum degree reaches (1.3-2.0)*10-3 Pa, the temperature rise speed is controlled to range from 10 DEG C/min to 30 DEG C/min, the temperature is increased to range from 850 DEG C to 1,150 DEG C, then heat preservation is conducted for 30 min to 120 min, then the cooling speed is controlled to range from 3 DEG C/min to 10 DEG C/min, cooling is conducted to 300 DEG C, furnace cooling is conducted later, and then connection of the titanized Al2O3 ceramic with the Ti ring is finished. An obtained titanized Al2O3 ceramic/ Ti ring connector is dense in structure, and air tightness is good.

The invention discloses a ceramic matrix composite turbine guide blade with turbulent flow structures and a preparation method thereof. An inner cavity of the guide blade is provided with a plurality of columnar turbulent flow structures penetrating through a blade basin and a blade back, and the guide blade is made of a ceramic matrix composite. The invention further provides the preparation method of the blade. The preparation method comprises the following steps that a mold with vent holes is prepared firstly, then a fiber preform is prepared according to the mold, an interface layer and a ceramic matrix are sequentially deposited, after the mold is removed, the guide blade is machined to the design size, then through holes perpendicular to the blade profile are prepared in the turbulent flow column parts of a prepared blade body shell, then pins are inserted into the through holes, then a prepared assembly is connected in a homogeneous mode, and after machining and repairing, the ceramic matrix composite turbine guide blade with the turbulent flow structures is obtained. The temperature resistance of the guide blade prepared through the method is greatly improved, meanwhile, the structural weight is remarkably reduced, and the precision of the profile and the size and the cooling effect of the guide blade can be guaranteed.

The invention relates to a solid oxide fuel cell, in particular to a solid oxide fuel cell containing a metal-ceramic type Ni1-xMox/Ce1-yCayO2-delta SOFC anode catalyst taking nickel and molybdenum asmetal components and taking high-performance nano Ce1-yCayO2-delta as a carrier. The catalyst has an excellent catalytic effect on complex hydrocarbon fuels (such as gaseous alkanes such as methane and propane and liquid alkanes such as gasoline), hydrocarbons can be efficiently catalyzed and converted into fuel gas rich in H2 and CO, H2 and CO reaction gas is provided for electrochemical reaction of an SOFC anode, the electrochemical reaction rate of the anode is increased, and the electrochemical performance of an SOFC monocell is improved.

The invention belongs to the technical field of amorphous alloy preparation, and relates to a method for preparing a high-entropy reinforced amorphous alloy composite material. The method comprises the following steps that amorphous alloy powder and high-melting-point high-entropy alloy powder with high toughness are evenly mixed according to a designed volume fraction, the mixed powder is conveyed out through airflow with supersonic speed, and the mixed powder and a laser focus are converged at a position 2-30mm above a deposition substrate; the amorphous alloy powder is heated to be in a molten state through laser suspension, meanwhile, the amorphous alloy powder is blown and cooled to be in a supercooled liquid state through supersonic airflow in the process of flying to the deposition substrate, an amorphous alloy matrix is deposited on the substrate, the high-entropy alloy powder is kept not molten all the time in the process, and finally, the high-entropy alloy powder is uniformly distributed in amorphous alloy formed by deposition in a reinforced phase form; the melting point of the high-entropy alloy powder is higher than that of the amorphous alloy powder; and an amorphous alloy composite material part without size constraint can be prepared, and the material has the performance advantages of high strength and high toughness.

The invention belongs to the technical field of composite materials and preparation thereof, and relates to a high-entropy reinforced amorphous alloy composite material and a preparation method thereof. The composite material is composed of a Cr-Fe-Ni-Ta-Mo-V high-entropy alloy phase reinforced Co-Fe-Ta-La-B amorphous alloy matrix, the volume of the high-entropy phase accounts for 0.1%-1% of the total volume of the composite material, and the size of the high-entropy alloy reinforced phase ranges from 30 micrometers to 80 [mu]m; the amorphous alloy matrix comprises the following components in percentage by atom: 15%-25% of Fe, 2%-10% of Ta, 11%-17% of La, 15%-25% of B and the balance of Co; the high-entropy alloy reinforcement phase comprises the following components in percentage by atom: 15%-25% of Fe, 10%-20% of Ni, 15%-25% of Ta, 7%-16% of Mo, 10%-20% of V and the balance of Cr; a laser additive manufacturing technology is adopted for preparation, the block high-entropy reinforced amorphous alloy composite material is finally obtained, and the plasticity and toughness of the composite material can be enhanced.

The invention relates to a preparation method of a poly(3,4-ethylenedioxythiophene)/self-doped defect-rich tin oxide nano composite photocatalytic material. A self-doped defect-rich tin oxide heterojunction material is loaded and dispersed on PETOT in a chemical bond complexing form to obtain the nano composite material; and the self-doped defect-rich tin oxide is selected from defect-rich tin oxide SnO2-x consisting of Sn-doped nonstoichiometric or mixed valent tin oxides. The electron-hole separation can be facilitated by utilizing the visible light responsive oxidation and reduction capacity of the self-doped defect-rich tin oxide heterojunction material, conductivity and hole transport capacity of PETOT as well as the chemical bonding heterojunction structure among different components, so that the excellent photocatalytic performance can be achieved. Meanwhile, the easy-to-mold characteristic of polypyrrole can effectively avoid the recycling difficulty of the powder material, sothat the poly(3,4-ethylenedioxythiophene)/self-doped defect-rich tin oxide heterojunction nano composite material is a novel environment-friendly photocatalytic material convenient to recycle.

The invention discloses a preparation method of poly(3-hexylthiophene)/self-doped defect-riched tin oxide heterojunction nano composite photocatalytic material. According to the method, a nano composite material is obtained by loading and dispersing a self-doped defect-riched tin oxide heterojunction material in P3HT in the form of chemical bond complexation; wherein the self-doped defect-riched tin oxide is selected from Sn-doped non-stoichiometric or defect-riched tin oxide SnO2-x composed of mixed valence state of tin oxide; according to the invention, the visible light photocatalytic redoxproperties of self-doped defect-riched tin oxide, the electrical conductivity of poly(3-hexylthiophene), the catalytic capacity of visible light and a heterojunction structure with chemical bonding among different components are utilized to fully inhibit photo-generated electrons-hole recombination of the nano composite photocatalytic material in a photocatalytic reaction, so that the improvements on the performance of photocatalytic redox degradation of pollutants and photocatalytic decomposition of hydrogen produced by water of the nano composite photocatalytic material are facilitated. Atthe same time, the characteristics of being easy to be molded of poly(3-hexylthiophene) can effectively avoid the problem of difficulty in recovery of powder materials.

The invention relates to a solid oxide fuel cell catalyst, in particular to a metal-ceramic type Ni < 1-x > Mo < x >/Ce < 1-y > Ca < y > O < 2-delta > SOFC anode catalyst taking nickel and molybdenumas metal components and taking high-performance nano Ce < 1-y > Ca < y > O < 2-delta > as a carrier. The catalyst has an excellent catalytic effect on complex hydrocarbon fuels (such as gaseous alkanes including methane, methanol, ethanol, propane and the like and liquid alkanes including gasoline and the like). The hydrocarbons can be efficiently catalyzed and converted into fuel gas rich in H2 and CO, H2 and CO reaction gas is provided for electrochemical reaction of the SOFC anode, the electrochemical reaction rate of the anode is increased, and the electrochemical performance of the SOFC monocell is improved.