Is the microstructure of cementite(I) black?

07 December 2023 0 3K Report

As I know, Cementite(I) contains 6.67%C so when we see it in optical microscopy, cementite(I) will appear as dark lines, won't it? But i watched a video on youtube, that video shows cementite appears as a big white line. Can someone explain this question for me? Thanks

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