Chemical and topological surface modification to enhance coating adhesion and compatibility

A process of coating a substrate containing silicon with an environmental barrier coating, comprising:

• mechanical removal of material comprising at least one of creating divots in said surface, creating lines in said surface, wherein the divots and the lines are arranged in patterns;
• altering a surface of said substrate, by modifying a texture of said surface through a physical addition of material wherein said texture modification results in a surface topology wherein said surface topology is created by embedding particles into said surface by directional deposition;
• exposing said surface to a plasma;
• and
• applying an environmental barrier layer to said surface of said substrate.