Patent ID: 9581030
Date: 2017-02-28
CPC Classifications: B64C,F01D,F05D,Y02T

Claim:
1. A method of protecting an oxidative surface of an aircraft comprising: a. forming a binder by mixing together ceramic mortar and elongate refractory oxide shells that are hollow and have ends open on opposing sides; b. forming a mixture by mixing the binder with refractory material platelets, wherein the mixture has an amount of volatile material; c. applying the mixture to the oxidative surface which is selected from the group consisting of a turbine blade surface, an exhaust washed surface, and an aircraft wing surface; d. forming a protective layer on the surface by heating the mixture to a temperature so that at least some of the volatile material volatizes to create free volume voids at random locations in the binder; and e. operating the aircraft to expose the protective layer to at least 2000° F. thereby inducing a strain in a portion of the layer that is absorbed by the free volume voids to substantially minimize stress in the layer from the induced strain.