Specimen of thermal barrier coating (TBC) was inspected by high resolution X-ray imaging with a microfocus X-ray source

while multiscale contrast enhancement for X-ray image was performed

and the contrast between the coating and substrate was improved.X-ray images show that thickness of TBC is different in different positions

and many voids may exist in the interior of TBC.The specimen of TBC was scanned and reconstructed by high resolution microfocus X-ray computed tomography(CT)

and slice images in different cross sections were obtained.CT images show that voids exist in TBC

and the size and quantity of voids are different in different cross sections.Combined with slice image analysis from three coordinate directions

thickness of TBC along deepth direction was analyzed

and two-dimensional distribution of TBC thickness was achieved.Average thickness of TBC is approximately 40 μm.The slice images from slice 850 to slice 1131 along deepth direction were visualized by the software of VGstudio MAX

and 3-D distribution of voids was displayed.Research results show that micro-computed tomography can be used to inspect the quality of thermal barrier coating.