48 results about "Atomic cluster" patented technology

Nanoscale or mesoscale structures are fabricated on the surface of a substrate (e.g. silicon) by the aggregation of atomic clusters (e.g. antimony or bismuth) into V-grooves. These structures, preferably in the form of nanowires, are used as etching masks for the subsequent etching of the substrate. In an embodiment the V-grooves are metallised (e.g. with titanium or gold) prior to the deposition of the clusters. In this case the use of the nanostructures (e.g. antimony or bismuth) as an etching mask results in the formation of nanostructures of the underlying metal (e.g. titanium or gold). In this way the dimensions of the nanowires are transferred into the underlying metal film and the method allows fabrication of nanowires from materials (e.g. titanium or gold) that cannot be deposited as clusters.

The invention provides a preparation method of a thorn-shaped or petal-shaped rough-surface gold-silver alloy nanometer material. The preparation method comprises the steps that gold nanoparticle seeds are prepared from a mixed solution of chloroauric acid and trisodium citrate; the gold nanoparticle seeds grow on the surfaces of gold nanoparticles through heterogeneous nucleation; and under the action of molecular synergistic adsorption of L-dopamine, stabilization of atomic clusters, reduction of gold ions and silver ions and underpotential deposition of silver atoms, the thorn-shaped or petal-shaped rough-surface gold-silver alloy nanometer material is prepared and formed. The preparation method is simple in process and effective; production cost can be lowered conveniently; the preparation method is suitable for large-scale production; and the prepared thorn-shaped or petal-shaped rough-surface gold-silver alloy nanometer material is of a unique bionic structure, large in specific surface area and capable of loading a great amount of active medicine and molecular dye. Therefore, the preparation method has wide application prospect in the fields such as SERS sensing, catalysis, diagnosis and treatment and adsorbing materials.

The invention relates to a method for preparing solid amorphous alloy thin strips with controllable microstructures. The method is characterized by specifically comprising the steps that first, solid amorphous alloy thin strip samples at different alloy melt temperatures are prepared; second, the three-dimensional structures of atomic clusters in the solid amorphous alloy thin strips corresponding to different alloy melt temperatures are subjected to characterization by a transmission electron microscope; third, atomic cluster structure characteristics and the preparation temperatures of the solid amorphous alloy thin strips are related; fourth, the atomic cluster structures of alloy melt are selected and solidified to the solid amorphous alloy thin strips rapidly. According to the method, the microstructures of the solid amorphous alloy thin strips can be effectively controlled to achieve the designability and the controllability of the microstructures of the solid amorphous alloy thin strips and obviously improve the macroscopic physical performance of the solid amorphous alloy thin strips. The method for preparing the solid amorphous alloy thin strips with the controllable microstructures has the characteristics of being simple and convenient to implement, high in efficiency, low in cost, high in controllability and repeatability and high in technical reliability and the like, and is suitable for being widely applied in the technical field of preparation of metal functional materials.

The invention relates to a method for synthesizing high-performance metallic materials in a low-temperature liquid phase, and belongs to the field of material science and engineering technology and chemistry. The prepared metallic materials comprises monatomic, diatomic, polyatomic, atomic cluster or ultrafine nanoparticle and other materials composed of one or more metallic elements such as Ti, V, Cr, Mn, Cu, Zr, Nb, Mo, Ru, Rh, Pd, Ag, W, Re, Os, Ir, Pt and Au synthesized chemically in the low-temperature liquid phase.

An apparatus and method are directed to managing a configuration of a cluster of members. The invention employs an atomic cluster configuration approach that includes applying a change to the configuration uniformly across the members in the cluster. Each member within the cluster is initialized to a transaction mode. If all members are in the transaction mode, a change is provided to each member, which evaluates the received change. If the change is determined to be unacceptable for any of the members, the change is determined to be globally unacceptable, and is rejected for all the members in the cluster.

The invention discloses an electrode active material for a lead-acid storage battery. The electrode active material comprises lead powder and a non-metallic titanium compound; the lead powder comprises one or more kinds of metal lead powder, ball-milling lead powder, Barton lead powder, Pb<2>O powder, PbO powder, Pb<2>O<3> powder, Pb<3>O<4> powder and PbO<2> powder; and the non-metallic titanium compound comprises one or more kinds of titanium sulfide, titanium nitride, titanium boride, titanium carbide, titanium hydride, titanium hydroxide, titanium silicide, a symbiotic blend of the abovementioned compounds on an atomic micro level or atomic cluster level, and doped compounds formed by doping the abovementioned compounds with one or more kinds of F, Sb, Sn, Ca, Bi, Co, Ca, Al, Mg, N, P, O and C. By virtue of the electrode active material for the lead-acid storage battery with an improved formula, the specific power, specific energy, charging-discharging efficiency, cycle life, low-temperature performance and the like of the lead-acid storage battery can be obviously improved.

A process for preparing the catalyst containing the S and the atom cluster compound of transition metal (Mo or W) and used for hydrodesulfurizing is disclosed. Said atom cluster compound of Mo or W is prepared from its oxide through electrolyzing in acid solution, sulfurizing, oxidizing, concentrating, separation and chemical reaction. Its advantage is high hydrodesulfurizing performance.

The invention belongs to preparation technologies of ultrahigh strength aluminium alloys, and relates to a method for improving the corrosion resistance of a 750MPa level ultrahigh strength aluminiumalloy. The method comprises the steps that a deformed product is subjected to solid-solution quenching, then one to three times of subzero treatment is conducted, and at last aging treatment is conducted. A large amount of dislocations and subgrains which are in interaction can be formed through the method; grain boundary intermittent precipitated phases are promoted to be formed; the corrosion resistance can be obviously improved under the condition that the alloy strength level is maintained at the 750MPa level after aging; and meanwhile the organization structure is more stable. The methodis suitable for high-performance 750MPa level ultrahigh strength aluminium alloy plates or extruded profiles used in the fields of aviation, spaceflights and weapons. The plates or the extruded profiles after hot working are subjected to solid-solution treatment to form a supersaturated solid solution, a certain extent of recrystallization is controlled to be generated, a large amount of vacancies, atomic clusters, and dislocations and subgrains which are in interaction are formed in the subsequent subzero treatment process, the grain boundary organization structure of the alloy after artificial aging treatment is improved, and the intermittent precipitated phase structure is promoted to be formed.

The invention relates to the field of new materials, and discloses a method for preparing a powder material with an electrochemical cathode. By using an inert electrode as an anode, a massive metal, semiconductor and alloy as a cathode, and a lithium salt/sodium salt/quaternary ammonium salt organic solution, pyrrole, quaternary ammonium salt or piperidine ionic liquid or strongly alkaline water solution as an electrolyte, strong cathode polarization is carried out under constant voltage; under the action of the strong cathode voltage, the massive metal, semiconductor and alloy surface forms an unstable intermediate Mx+Ny- (M+ is an electrolyte cation, and N represents metal, semiconductor or alloy) and becomes corroded; the intermediate is very unstable in the electrolyte, and is quickly decomposed to generate an atomic cluster; the atomic cluster continues aggregate to obtain a nanoparticle sol; and finally, the sol is centrifuged/washed, and dried to obtain the powder material. The prepared powder material can be widely used in the fields of lithium ion batteries, supercapacitors, (electric) catalysis, biosensing, photovoltaic devices, micro-electronics and the like.

The invention relates to a technological method for increasing the content of iron in a thin amorphous Fe-Si-B alloy strip. The method is characterized by comprising the steps as follows: S1, the decomposition temperature of nonmetallic atomic clusters in Fe-Si-B alloy melt is calculated; S2, the temperature for mainly forming the first neighborhood relation between iron atoms and nonmetallic elements in the Fe-Si-B alloy melt is calculated; S3, the heating treatment temperature of the Fe-Si-B alloy melt is set, the Fe-Si-B alloy is heated to the temperature at which the iron atoms form the strong first neighborhood relation with silicon atoms and boron atoms; S4, the heated alloy melt is quickly cooled to the set pouring temperature and is quickly solidified, and the thin amorphous solid alloy strip is obtained. With the method, the purpose of increasing the content of iron in the thin amorphous Fe-Si-B alloy strip can be achieved by regulating and controlling the microstructure of the amorphous Fe-Si-B alloy, so that the saturation magnetic induction intensity of the thin amorphous Fe-Si-B alloy strip can be increased.

The invention relates to a method for spraying a cracked selenium source on the surface of a substrate. The method comprises the following steps: entering selenium steam into a high-temperature cracking chamber; penetrating the selenium steam through two layers of porous grid plates with uniformly distributed pores, the pore diameter of which is 0.2-0.5mm, in the high-temperature cracking chamber, so that the selenium source forms cracked selenium source; and spraying the cracked selenium source to the surface of the substrate so as to complete the process of spraying the cracked selenium source on the surface of the substrate. According to the method provided by the invention, the selenium steam is adopted to penetrate through the two layers of porous grid plates at high temperature, and a large Sen (n is more than or equal to 5) atomic cluster is cracked to form a small Sen (n is less than 5) atomic cluster, thereby increasing the quantity of high-activity Se2, improving the reaction activity of a selenium element, effectively improving the film-forming quality of a CIGS (copper indium gallium selenium) layer of a CIGS film solar battery and taking an positive effect on improvement of photoelectric conversion efficiency of the CIGS film solar battery; and the selenium steam with the small atomic cluster is directly sprayed to the surface of the substrate through spray orifices, so that a selenium material can sufficiently participate in the reaction film-forming process of the CIGS layer, thereby improving the utilization rate of the selenium material.

The invention relates to a nano processing method aiming at organisms on the basis of atomic cluster beams. Vacuum nano processing is performed on the organisms with high vapor pressure by utilizing the cluster beams, so that nano particles reach the surfaces of the organisms and functionally grow; the momentum of atomic cluster ions reaches 1.5*10<8> amu m/s; the organisms with high vapor pressure are solid materials of which the vapor pressure is 0.1 to 100 Pa at room temperature. A chamber I, a chamber II and a chamber III which are connected in series are formed in a generating device of the atomic cluster beams of the organisms; the growth of the atomic cluster beams at the same speed is realized by adjusting an opening angle of a nozzle between the chamber I and the chamber II or/and between the chamber II and the chamber III, and the opening angle of the nozzle is 5 to 35 degrees.

The invention discloses a method for adjusting the microstructure of amorphous solid alloy by utilizing the configuration and number of melt atomic clusters. The method comprises the following steps:carrying out analog calculation on the configuration and number of the atomic clusters in alloy melt, to be specific, according to the components of to-be-prepared alloy, calculating the configurationand number of atomic clusters in the alloy melt at different temperatures, and obtaining a calculating result that the configuration and number of the atomic clusters vary with the temperatures; carrying out superheat treatment on the alloy melt, to be specific, choosing required configuration and number of the atom clusters according to the calculating result, determining that the temperature corresponding to the chosen configuration and number of the atomic clusters is the superheat treatment temperature of the alloy melt, and carrying out heat preservation on the alloy melt at the superheat treatment temperature so as to obtain the superheat-treated alloy melt; and carrying out rapid solidification, to be specific, carrying out rapid solidification on the superheat-treated alloy melt to obtain the amorphous solid alloy. The invention creates a novel scheme for the controllable preparation of the microstructure of the amorphous solid alloy.

The invention discloses a preparation method for a thermal barrier coating of a high strain tolerance columnar structure. The thermal barrier coating is of the columnar structure with intercolumnar pores and thus has high strain tolerance. The preparation method comprises the steps that under the chamber pressure of 10-5000 Pa, mixed beams containing coating material micro particles in the form of single atoms and/or atomic clusters serve as a deposition source, intermittent and/or continuous deposition is conducted on a workpiece of which the free path exceeds two times or above of the minimum free path of the coating material micro particles in the mixed beams, and the surface temperature is maintained or heat is preserved to be 0.2 times or above of the coating material melting point, so that the thermal barrier coating of the high strain tolerance columnar structure with the intercolumnar pores is prepared and obtained. Compared with a traditional thermal barrier coating, the thermal barrier coating prepared through the preparation method is of the high strain tolerance columnar structure with the intercolumnar pores, the stress caused by thermal mismatch can be effectively released, and the strain tolerance is improved, so that the service life of the thermal barrier coating is prolonged.

The invention discloses an analytical method suitable for continuous high-resolution transmission electron microscope images. The analytical method includes the following steps: framing processing is performed on continuous high-resolution dynamic images to obtain framed images; correlation processing is performed on the acquired framed images to obtain a correlation coefficient matrix; difference value processing is performed on the acquired correlation coefficient matrix to obtain a correlation coefficient difference value matrix; and the acquired correlation coefficient difference value matrix is converted to a contour map, different areas and boundaries between the areas are distinguished in a short time according to the range and the shape of contour lines, subtle motion changes of the continuous images are obtained according to changes in values of the contour lines and the average rate of change, and a transmission mechanism of energy is acquired. According to the analytical method suitable for the continuous high-resolution transmission electron microscope images, framing, conversion and correlation processing are performed on the images, the obtained correlation coefficient matrix that is calculated, the method converts atom or atomic cluster motion information that cannot be expressed quantitatively originally to information that can be analyzed quantitatively, an implementation process is relatively simple, and thus the method is easy to implement.

The invention relates to a method for strengthening a VW93M magnesium alloy through atomic segregation and atomic clusters. The magnesium alloy comprises, by mass, Mg, 8.0-9.6% of Gd, 1.8-3.2% of Y, 0.3-0.7% of Zr, 0.02-0.5% of Ag, 0.02-0.3% of Er. The method comprises the steps of conducting rotary forging deformation on a VW93M magnesium alloy bar, controlling the initial rotary forging temperature to be 100-300 DEG C and the total deformation to be 10-80%, conducting oil lubrication in the rotary forging process, controlling the flow velocity of a lubricating agent to be 0.5-1.5 m3/h and the feeding speed to be 3-6 mm/min, changing the feeding direction after each pass of deformation, wherein the concentration of Gd and Y elements of the grain boundary is 2-2.5 times greater than that of intragranular Gd and Y elements, the size of atomic clusters is 5-15 nm, and the obtained magnesium alloy has the yield strength greater than or equal to 530 MPa, the tensile strength greater than or equal to 610 MPa and the percentage elongation after fraction greater than or equal to 5%.

The invention discloses a regulation method of an amorphous alloy average atomic cluster size. The regulation method of the amorphous alloy average atomic cluster size comprises the steps that amorphous alloy fused mass average atomic cluster size is calculated, specifically, the average atomic cluster sizes of amorphous alloy fused mass are calculated under different temperatures, the calculationresults of the average atomic cluster size changed with the temperature are acquired; super heating treatment is conducted on the alloy fused mass, specifically, the needed average atomic cluster size is chosen according to the calculation results, the temperature corresponding to the chosen average atomic cluster size is determined to be the super heating treatment temperature of the alloy fusedmass, heat preservation is conducted on the alloy fused mass under the super heating treatment temperature, and the alloy fused mass after the super heating treatment is acquired; and rapid solidification is conducted, specifically, the rapid solidification is conducted on the amorphous alloy fused mass after the super heating treatment, and an amorphous solid alloy is acquired. According to theregulation method of the amorphous alloy average atomic cluster size, a novel concept and a novel method of designing and preparation of an amorphous alloy microstructure are initiated, and the regulation method of the amorphous alloy average atomic cluster size has the characteristics of simpleness, convenience, high efficiency, low cost, high technology reliability and the like.