Nondestructive Evaluation of Flaking-Resistance in Thermal Sprayed Ceramic Coatings with X-ray Diffraction Method

Abstract

Thermal spraying has emerged as an important tool of increasingly sophisticated surface engineering technology. Therefore, the demand for technology that is checked non-destructively has become more insistent. This paper presents the nondestructive evaluation of fl aking-resistance in thermal sprayed Al 2 O 3 , ZrO 2 and TiO 2 coating. The full-width at half maximum taken from the X-ray diffraction peak profi le was used as a nondestructive evaluation method in this study. The results by the nondestructive method were compared to the results with scratch test. It was found that nondestructive evaluation of the thermal sprayed ceramic coating was effective.