ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,554, issued on Nov. 4, was assigned to Siemens Energy Global GmbH & Co. KG (Bayern, Germany).
"Fully stabilized zirconia in a seal system" was invented by Dimitrios Zois (Berlin).
According to the abstract* released by the U.S. Patent & Trademark Office: "A seal system for gas turbine that includes a stator and a blade with a blade tip facing the stator. The blade has a protective ceramic coating having an inner ceramic layer being made of a partially stabilized zirconia and having at least a partially segmented microstructure in form of vertical cracks. The ceramic coating further includes an outer ceramic layer made of fully stabilized zirconia and having a segmented microstruct...