Thermal insulating material and method of producing same

US6602814B1 · kind B1 · utility

Assignee

• MTU Aero Engines AG · DE

Inventors

• Rainer Gadow · Aschau am Inn, DE
• Guenter Schaefer · Jacksonville, US

Key dates

• Filing date: Oct 11, 2000
• Grant date: Aug 5, 2003
• Expiry date: Oct 11, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A thermochemically stable oxidic thermal insulating material presenting phase stability, which can be used advantageously as a thermal insulating layer on parts subjected to high thermal stress, such as turbine blades or such like. The thermal insulating material can be processed by plasma spraying and consists preferably of a magnetoplumbite phase whose preferred composition is MMeAl11O19, where M is La or Nd and where Me is chosen from among zinc, the alkaline earth metals, transition metals, and rare earths, preferably from magnesium, zinc, cobalt, manganese, iron, nickel and chromium.