Abstract
This study aims to evaluate adhesion quality and surface damage of DLC film as a releasing agent with a thermal shock test. To imitate a practical glass press molding process, DLC specimen was vacuum-encapsulated with a glass tube, and then they were heated up to 610oC using the electric furnace and were quenched to 20oC in water. After eight cycle thermal shock test, localized surface damage and exfoliations were observed, and expanded with the cyclic number. Moreover, the ratio of G-peak to D-peak (ID/IG) in Raman spectra suggesting the degree of graphitization of DLC for the samples after the test increased. These results show that the proposed thermal shock test is useful to evaluate the adhesion quality and surface damage of the DLC film at high temperature.
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