Figure 8 | Scientific Reports

Figure 8

From: Analysis of the carbide precipitation and microstructural evolution in HCCI as a function of the heating rate and destabilization temperature

Figure 8

(a) Mass spectrum of the specimen presented in (b), measured at 60 K. The occurrence of different ions of single and molecular C is evidenced and the complexity of the spectrum due to overlapping of several peaks. The presence of Ga ions is the result of the FIB preparation. (b) Reconstruction of and specimen containing part of a carbide. For clarity Fe and Cr atom are shown. An iso-surface of C = 9.3 at.% was created to calculate the variation of composition across the interface. The second iso-surface at 28 at.% was utilized to define a ROI where to perform the compositional analysis. (c) Proxigram across the iso-surface at 9.3 at.% showing that after 2–3 nm the C content inside the carbide tends to 30 at.%. Please note that no peak decomposition is performed for the proxigram.

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