Patents Assigned to Ultraystems Defense and Space, Inc.
  • Precursor for A1NBN ceramic and method of use
    Patent number: 4946809
    Abstract: A soluble, processible ceramic precursor, comprising A1N and BN in fixed proportion, which on pyrolysis is transformed into pure carbon free A1NBN ceramic, of the formula:R.sub.3 N.X.sub.2 A1n(SiR'.sub.3)B(NH.sub.2)NHSiR'.sub.3wherein R and R' are independently lower alkyl groups or isomers thereof having from one to about five carbon atoms.Also disclosed are methods for making the precursor, and methods for thermally decomposing the precursor to form coatings, thin films, and shaped articles of substantially pure A1NBN ceramic.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: August 7, 1990
    Assignee: Ultraystems Defense and Space, Inc.
    Inventors: Kazimiera J. L. Paciorek, James H. Nakahara