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. 2019 May 13;9:7266. doi: 10.1038/s41598-019-43819-x

Figure 4.

Figure 4

Cross-sectional BEI of the oxide layers after (a) 1 (b) 50 (c) 100 (d) 200 hours of oxidation at 1000 °C (grey scale image) and EDS mapping results of the selected region (color-coded images). 1, 2, 3, 4 respectively represent “OL”, “IOD”, “IND”, and “substrate”. The enlarged image in (d) showed the details of a TiN particle.