In one exemplary embodiment, the MT coating 16 can have a thickness less than 1000 A, such as less than 800 A, such as less than 600 A, such as in the range of greater than 0 A to 600 A, such as in the range of 200 A to 500 A. [0028] The MT coating 16 can have a grain size greater than or equal to 30 nm, such as greater than or equal to 60 nm, such as greater than or equal to 80 nm.