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Plasma Ceramic Coatings

In this process, a ceramic coating is applied to the surface of an object using a plasma spray. This enables the end product to operate reliably at high  higher temperatures than an uncoated one . The process is commonly used for jet engine turbine blades, so high quality is critical for safe performance.

The surface temperature and uniformity are critical during this process, otherwise the coating can eventually spall and cause product failure. Contact measurements cannot be used within the plasma spray environment, so a non-contact method which is not affected by interference from the spray must be utilised.

The 3.9 µm waveband sees through the very bright plasma spray to provide a true surface temperature measurement during coating.

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