Wärmeschutzschichten, Materialien und Verfahren zu ihrer Herstellung

摘要

The invention relates to thermal barriers, a process and a material for their preparation, and their applications. The thermal barriers are constituted by a material comprising at least one refractory oxide having a low thermal diffusivity and at least one pseudocrystalline aluminium alloy, the amount of which represents from 2 to 30% by volume. They may be prepared by vapour-phase deposition of a mixture of a refractory oxide and pseudocrystalline alloy, or alternatively from a mixture of a refractory oxide and pseudocrystalline aluminium alloy in the molten state, or else by deposition onto the support to be protected using an oxygen/gas torch fed with material by means of a flexible bead (cord) containing the refractory oxide and the pseudocrystalline alloy. Applications: protection of engine components of aircraft or motor vehicles, of aeronautical or aerospace components, of chemical reactors or of accessories for domestic electrical appliances.