Thermal gradient coating resists heat checking in pins. (Surface Engineering).

Advanced Materials & Processes, November, 2002

A coating deposited via the large area filtered arc deposition (LAFAD) process, which provides better thermal fatigue resistance to heat checking in core pins for die casting, has reportedly been developed by UES, Dayton, Ohio, in collaboration with the Ohio State University, Columbus. The filtered arc process produces fully ionized energetic metal plasma, which readily combines with activated nitrogen or carbon gas, to produce smooth, ultrahard nitride or carbide coatings.

Called TitanCoat, the design is said to provide better thermal fatigue resistance to heat checking. The multilayer coating architecture consists of alternating stacks of high thermal-conductivity layers and thermal barrier layers. The thermal barrier layers help to reduce the thermal...

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