Figure 9

Macroscopic and microscopic images of the failed 2.5DWC with a hole size of 6.3 mm at different temperatures. (a) 20 °C; (b) 180 °C; (c) 240 °C.

Macroscopic and microscopic images of the failed 2.5DWC with a hole size of 6.3 mm at different temperatures. (a) 20 °C; (b) 180 °C; (c) 240 °C.