Multilayer coating for oxidation protection

A ceramic matrix composite comprising:

• a plurality of ceramic fibers;
• a coating system applied to and circumscribing each fiber of the plurality of fibers,
• the coating system comprising:
• an interface coating layer in direct contact with the fiber, the interface coating layer comprising one of boron nitride and a boron-doped pyrocarbon;
• a first intermediate layer extending coaxially with and in direct contact with the interface coating layer, the at least one intermediate layer comprising silicon carbide;
• a second intermediate layer in direct contact with the first intermediate layer, wherein the second intermediate layer comprises boron nitride;
• a third intermediate layer in direct contact with the second intermediate layer, wherein the third intermediate layer comprises silicon-doped boron nitride;
• and
• an outer layer extending coaxially with and in direct contact with the third intermediate layer;
• wherein at least one of the interface coating layer, the first intermediate layer, the second intermediate layer, the third intermediate layer, and the outer layer comprises a metallic element;
• and
• a matrix deposited on the plurality of fibers and the coating system.