B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 18/00 (2006.01) C04B 35/56 (2006.01) C04B 41/52 (2006.01) C04B 41/89 (2006.01)
Patent
CA 2054257
A composite material containing carbon is protected against oxidation by forming, on the composite material, an inner layer, an intermediatelayer containing boron or a boron compound, and an outer layer of silicon carbide. The inner layer formed on the composite malarial before the intermediate layer is formed is made of a refractory carbide that does not contain boron and that is at least 60 microns thick, said inner layer insulatingthe intermediate layer from the carbon contained in the composite material.
Cavalier Jean-Claude
Goujard Stephane
Tawil Henri
Vandenbulcke Lionel
Sim & Mcburney
Societe Nationale D'etude Et de Construction de Moteurs D'aviati
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