Patents by Inventor Andrew Lazur

Andrew Lazur 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).

  • Surface-aided melt infiltration for producing a ceramic matrix composite
    Patent number: 10150708
    Abstract: A method of melt infiltration for producing a ceramic matrix composite comprises applying a surface slurry onto one or more outer surfaces of an impregnated porous preform. The surface slurry comprises a solvent and particulate solids, and the preform comprises a framework of ceramic fibers loaded with particulate matter. The surface slurry is dried to form a porous layer comprising the particulate solids on the one or more outer surfaces of the impregnated porous preform. After forming the porous layer, an end portion of the impregnated porous preform that includes at least part of the porous layer is immersed in a molten material, and the molten material is infiltrated into the impregnated porous preform from the end portion. The porous layer serves as a wick to transport the molten material over the one or more outer surfaces, thereby enabling melt infiltration of the impregnated porous preform from other portions thereof.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: December 11, 2018
    Assignee: ROLLS-ROYCE HIGH TEMPERATURE COMPOSITES INC.
    Inventors: Sungbo Shim, Andrew Lazur, Robert Shinavski
  • SURFACE-AIDED MELT INFILTRATION FOR PRODUCING A CERAMIC MATRIX COMPOSITE
    Publication number: 20160326064
    Abstract: A method of melt infiltration for producing a ceramic matrix composite comprises applying a surface slurry onto one or more outer surfaces of an impregnated porous preform. The surface slurry comprises a solvent and particulate solids, and the preform comprises a framework of ceramic fibers loaded with particulate matter. The surface slurry is dried to form a porous layer comprising the particulate solids on the one or more outer surfaces of the impregnated porous preform. After forming the porous layer, an end portion of the impregnated porous preform that includes at least part of the porous layer is immersed in a molten material, and the molten material is infiltrated into the impregnated porous preform from the end portion. The porous layer serves as a wick to transport the molten material over the one or more outer surfaces, thereby enabling melt infiltration of the impregnated porous preform from other portions thereof.
    Type: Application
    Filed: May 5, 2016
    Publication date: November 10, 2016
    Inventors: Sungbo Shim, Andrew Lazur, Robert Shinavski