Patents by Inventor Yuanyun ZHAO

Yuanyun ZHAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250010363
    Abstract: The invention relates to a spherical iron alloy powder material, its preparation method, and its uses. By selecting a dominated Fe—La based alloy system and adding special alloy elements for spheroidization precipitation and corrosion resistant, the invention achieves the dispersion of spherical Fe-rich particles containing spheroidization precipitation elements in a La-rich matrix phase during the alloy solidification process. By removing the La-rich matrix phase, spherical iron alloy powder materials with particle sizes ranging from the nanoscale to tens of micrometers are obtained. This method is simple and can produce spherical iron alloy powders with various morphologies, including nanoscale, submicron, and micron sizes. It has excellent application prospects in fields such as powder metallurgy, metal injection molding (MIM), 3D printing, magnetic materials, heat-resistant materials, high-temperature alloys, coatings, electrical heating materials, wave-absorbing materials, and magnetic fluids.
    Type: Application
    Filed: July 25, 2024
    Publication date: January 9, 2025
    Inventor: Yuanyun ZHAO
  • Publication number: 20240327235
    Abstract: A preparation method for nano titanate, nano titanic acid, and nano TiO2. A Ti—T intermetallic compound, as a titanium source, is reacted with an alkaline solution under ambient pressure at a temperature near the boiling point of the alkaline solution, enabling the efficient preparation of titanate nanofilm materials under normal pressure. On this basis, it is possible to economically produce titanic acid nanofilm materials and TiO2 nanosheet/powder. In combination with subsequent high-temperature and high-pressure reaction, titanate nanotubes, titanic acid nanotubes, and TiO2 nanotubes/rods can be efficiently prepared.
    Type: Application
    Filed: October 18, 2023
    Publication date: October 3, 2024
    Inventors: Yanjun LI, Yuanyun ZHAO
  • Publication number: 20240246833
    Abstract: The present invention relates to a method for preparing nano ZrO2/HfO2 and metal nanoparticles. Firstly, an initial alloy mainly composed of Zr/Hf and Al/Zn is prepared using metal raw materials; Dissolve the initial alloy in a hot alkaline solution to obtain an intermediate solution; Then reduce the alkaline concentration or (and) temperature of the intermediate solution to allow the solid flocculent products containing Zr/Hf to precipitate from the intermediate solution after the concentration or (and) temperature is reduced, resulting in low crystalline nano ZrO2/HfO2; By further heat treatment, crystalline nano ZrO2/HfO2 was obtained. When precious metal elements are dissolved in the initial alloy, this method can also be used to prepare metal nanoparticle doped nano ZrO2/HfO2; After removing the nano ZrO2/HfO2 from the composite product, metal nanoparticles were further prepared.
    Type: Application
    Filed: December 15, 2023
    Publication date: July 25, 2024
    Inventor: Yuanyun ZHAO
  • Publication number: 20240228314
    Abstract: The present invention relates to a method for preparing a nano-titanate, a nano-titanic acid and a nano-TiO2 containing doping E or embedding E nanoparticles, and the use thereof. By using an E-doped Ti-T intermetallic compound as a titanium source, and reacting it with alkaline solution at atmospheric pressure and near its boiling-point temperature, an E-doped titanate nanofilm is prepared with high efficiency and in a short time. Through acid treatment and (or) heat treatment, a titanate nanofilm containing embedding E nanoparticles, an E-doped titanic acid nanofilm, and a titanic acid nanofilm and a TiO2 flake powder containing embedding E nanoparticles can be further prepared. Through a subsequent reaction at high temperature and pressure, the preparation of an E-doped titanate nanotubes and titanic acid nanotubes, and titanic acid nanotubes and TiO2 nanotubes/nanorods containing embedding E nanoparticles can be achieved in high efficiency and low-cost.
    Type: Application
    Filed: October 18, 2023
    Publication date: July 11, 2024
    Inventors: Yanjun LI, Yuanyun ZHAO
  • Publication number: 20240228315
    Abstract: A method for preparing a nano-titanate, a nano-titanic acid and a nano-TiO2 containing embedded A nanoparticles is provided respectively. In this method, a Ti-T alloy with a A-group element solidly dissolved therein is used as a titanium source, and reacted with an alkali solution under a certain condition. In combination with subsequent treatment, the preparation of a titanate nanotube, a titanic acid nanotube, and a TiO2 nanotube/rod containing embedded A nanoparticles, respectively, is further achieved with high efficiency and low cost. Moreover, a method for preparing metal nanoparticles is also provided by removing the matrix of the composites. The present preparation methods is characterized by simple process, easy operation, high efficiency, low cost. The product is of promising application in polymer-based nanocomposites, ceramic materials, catalytic materials, photocatalytic materials, hydrophobic materials, effluent degrading materials, bactericidal coatings, anticorrosive coatings, marine coatings.
    Type: Application
    Filed: October 18, 2023
    Publication date: July 11, 2024
    Inventors: Yanjun LI, Yuanyun ZHAO
  • Publication number: 20240132367
    Abstract: A method for preparing a nano-titanate, a nano-titanic acid and a nano-TiO2 containing embedded A nanoparticles is provided respectively. In this method, a Ti-T alloy with a A-group element solidly dissolved therein is used as a titanium source, and reacted with an alkali solution under a certain condition. In combination with subsequent treatment, the preparation of a titanate nanotube, a titanic acid nanotube, and a TiO2 nanotube/rod containing embedded A nanoparticles, respectively, is further achieved with high efficiency and low cost. Moreover, a method for preparing metal nanoparticles is also provided by removing the matrix of the composites. The present preparation methods is characterized by simple process, easy operation, high efficiency, low cost. The product is of promising application in polymer-based nanocomposites, ceramic materials, catalytic materials, photocatalytic materials, hydrophobic materials, effluent degrading materials, bactericidal coatings, anticorrosive coatings, marine coatings.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 25, 2024
    Inventors: Yanjun LI, Yuanyun ZHAO
  • Publication number: 20240132366
    Abstract: The present invention relates to a method for preparing a nano-titanate, a nano-titanic acid and a nano-TiO2 containing doping E or embedding E nanoparticles, and the use thereof. By using an E-doped Ti-T intermetallic compound as a titanium source, and reacting it with alkaline solution at atmospheric pressure and near its boiling-point temperature, an E-doped titanate nanofilm is prepared with high efficiency and in a short time. Through acid treatment and (or) heat treatment, a titanate nanofilm containing embedding E nanoparticles, an E-doped titanic acid nanofilm, and a titanic acid nanofilm and a TiO2 flake powder containing embedding E nanoparticles can be further prepared. Through a subsequent reaction at high temperature and pressure, the preparation of an E-doped titanate nanotubes and titanic acid nanotubes, and titanic acid nanotubes and TiO2 nanotubes/nanorods containing embedding E nanoparticles can be achieved in high efficiency and low-cost.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 25, 2024
    Inventors: Yanjun LI, Yuanyun ZHAO
  • Publication number: 20240033822
    Abstract: The present disclosure provides a method for preparing a high-purity powder material, an application thereof, and a double-phase powder material. The high-purity powder material is prepared through an “atomization comminuting process and de-phasing method”. The preparation method comprises the following steps: firstly preparing intermediate alloy powders with first-phase particles wrapped by a second-phase matrix through an atomization comminuting process. Impurity elements are enriched into the second-phase matrix and the first-phase particles are purified during the solidification of the intermediate alloy powders; By removing the second-phase matrix in the intermediate alloy powders, a high-purity target powder material originated from the original first-phase particles can be obtained.
    Type: Application
    Filed: December 8, 2020
    Publication date: February 1, 2024
    Inventor: Yuanyun ZHAO
  • Publication number: 20230364677
    Abstract: The present disclosure relates to a method for preparing a category of alloy powder and an application thereof. By selecting a suitable alloy system and melting initial alloy melt through low-purity raw materials, high-purity alloy powder, and matrix phase wrapping high-purity alloy powder are precipitated during the solidification process of the initial alloy melt, and the solid solution alloying of the high-purity alloy powder is achieved at the same time. Alloy powder can be obtained by removing the matrix phase wrapping the high-purity alloy powder; high-purity alloy powder can also be obtained by removing the matrix phase wrapping the high-purity alloy powder at an appropriate time. The method is simple and can prepare a variety of alloy powder materials with different morphology at nano-scale, sub-micron level, micron level, and even millimeter level.
    Type: Application
    Filed: September 26, 2021
    Publication date: November 16, 2023
    Inventor: Yuanyun ZHAO
  • Publication number: 20230321720
    Abstract: The present disclosure relates to a method of preparing a nano-porous powder material. The method includes: firstly removing A in the alloy AxTy by using an ultrasonically-assisted de-alloying method to prepare a nano-porous T coarse powder, and then, allowing the nano-porous T coarse powder to perform M-ization reaction with a gas reactant containing M to obtain a nano-porous T-M coarse powder, and finally, further crushing the nano-porous T-M coarse powder using a jet mill to obtain a nano-porous T-M fine powder. The method can achieve low-cost mass production of the nano-porous T-M fine powder, bringing broad application prospects.
    Type: Application
    Filed: December 17, 2020
    Publication date: October 12, 2023
    Inventors: Yuanyun ZHAO, Chuntao CHANG, Chengliang ZHAO
  • Publication number: 20230158568
    Abstract: The present disclosure provides a method for preparing a powder material and an application thereof. The preparation method includes: obtaining an initial alloy ribbon including a matrix phase and a dispersed particle phase by solidifying an alloy melt, and then removing the matrix phase in the initial alloy ribbon while retaining the dispersed particle phase, so as to obtain a powder material composed of original dispersed particle phase. The preparation method of the present disclosure is simple in process and can prepare multiple powder materials of nano-level, sub-micron-level and micro-level. The powder materials have good application prospects in the fields such as catalytic materials, powder metallurgy, composite materials, wave-absorbing materials, sterilization materials, metal injection molding, 3D printing and coating.
    Type: Application
    Filed: November 23, 2020
    Publication date: May 25, 2023
    Inventor: Yuanyun ZHAO