Issue 78

N. Mohan et alii, Frattura ed Integrità Strutturale, 78 (2026) 129-145; DOI: 10.3221/IGF-ESIS.78.08

Figure 15: EDS elemental mapping of the worn surface of boronized 16Cr5Ni MSS at 950°C.

Figure 16: SEM micrographs of the worn surface of counter-body slid against bare MSS (a) 13Cr4Ni and (b)16Cr5Ni and boronized 13Cr4Ni and 16Cr5Ni MSS surfaces at (c - d) 950°C and (e - f) 1000°C in tribocorrosion. Further, the worn surface of the counterbody in the tribocorrosion condition was analysed using SEM micrographs as shown in Fig. 16. The micrographs of the bare 13Cr4Ni and 16Cr5Ni MSS reveal significant material transfer and adhesion features with few abrasive marks. The worn surface at 950°C, for the 13Cr4Ni MSS shows significant abrasive marks and is elliptical due to uneven contact between the sliding surfaces while for the 16Cr5Ni MSS depict a deformed surface. At 1000°C both grades of boronized MSS show deformed surfaces. Material transfer is not observed in the case of boronized samples. In the case of bare samples, the hardness of the alloy is significantly lower due to which the

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