Patent ID: 9382164
Filing Date: 2016-07-05
CPC Classification: C04B,F05D,Y10T

Claim Text:
1. A composite material part constituted at least in part by carbon and having a protective coating providing protection at high temperatures in an oxidizing medium, wherein said protective coating is constituted by at least one refractory material that can withstand high temperatures in an oxidizing medium, the refractory material comprising: hafnium, or a non-oxide compound of hafnium, or a mixture of hafnium and a non-oxide compound of hafnium; boron or a non-oxide compound of boron, or a mixture of boron and a nonoxide compound of boron; and a constituent corresponding to a rare earth element RE or a to non-oxide compound of the rare earth element RE, or corresponding to a mixture of rare earth element RE and a non-oxide compound of the rare earth element RE, where RE is selected from scandium, yttrium, and the lanthanides; and said material containing neither silicon nor a compound of silicon.