Patents Assigned to Max-Planck-Gesellschaft zur Foedering der Wissenschaften e.V.
  • Method of sintering articles of silicon nitride
    Patent number: 4908171
    Abstract: A novel method of sintering Si.sub.3 N.sub.4 shaped bodies which method comprises grinding Si.sub.3 N.sub.4 with the use of a grinding material down to a surface area magnitude of 10.5 to 35 m.sup.2 /g and an average particle size from 0.2 to 0.005 .mu.m, shaping the powder obtained, and sintering the compact under inert gas or nitrogen at a temperature from 1700.degree. to 1900.degree. C.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: March 13, 1990
    Assignee: Max-Planck-Gesellschaft zur Foedering der Wissenschaften e.V.
    Inventors: Nils Claussen, Jurgen Jahn, Gunter Petzow