The Effect of Thermal Heating on Corrosion Resistance of Diamond-Like Carbon Film Prepared by Filtered Cathodic Arc

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Abstract:

The correlation of Diamond-Like Carbon (DLC) bonding structure versus film corrosion protective capability against Hydrofluoric (HF) acid exposure was made. Raman analysis of DLC films that were subjected to repeated thermal cycle heating showed that were more clustering in sp2 sites upon exposure to high temperature and increasing time. When these films were subsequently exposed to HF acid, there was also corresponding increase in the amount of pitting corrosion features. The increase in sp2 clustering size is seen as a weak point in the overall DLC structure which subsequently allowed the acid to penetrate the film structure.

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223-226

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March 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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