PSI - Issue 33

Jesús Toribio et al. / Procedia Structural Integrity 33 (2021) 1123–1130 Jesús Toribio / Porcedia Structural Integrity 00 (2021) 000–000

1127

5

3.5. Nano-Structural Integrity As explained by Toribio (2020), heavily cold-drawn pearlitic steels exhibit an interlamellar spacing of about 0.030  m, (30 nm) so that they can be considered as micro-composites or nano-composites formed by alternate layers of ferrite (Fe) and cementite (Fe 3 C). In this conceptual framework, the innovative concept of nano-structural integrity is adequate for nano-cracks at the nano-scale: the fractured cementite lamellae (Fig. 6).

Fig. 6. Enlarged view (x8000 magnification) of a pearlitic pseudocolony in a heavily cold drawn pearlitic steel.

Also in the scale of analysis of nanostructural integrity, one of the possibilities of the fight against the novel COVID-19 illness is the breaking of structural integrity of SARS-CoV-2 coronavirus (Fig. 7). The destruction of such a nanostructural integrity would provide means for both disinfecting rooms and attacking the illness.

Fig. 7. SARS-CoV-2 coronavirus.