Thermal barrier composition of low thermal conductivity, mechanical piece superalloy protected by a ceramic coating having such a composition and method of making the ceramic coating.

摘要

Composition thermal barrier low thermal, characterized conductivity that it consists of: a base of zirconium, an oxide of dysprosium has a dual function of stabilizing the zirconia and of lowering the thermal conductivity of zirconium and an oxide of a metal ion tetravalent having an atomic mass greater than that of zirconium oxide and this hafnium dioxide.