Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2016

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: powłoki MoS2TiW

Sortuj według:

Ogranicz wyniki do:

Failure modes of coatings on steel substrate

Mróz K. P., Kucharski S., Doliński K., Bigos A., Mikułowski G., Beltowska-Lehman E., Nolbrzak P.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2016

Vol. 64, nr 1

249--256

The critical monotonic strain of Ni-W and MoS2(Ti,W) coatings on steel substrates was studied. The idea of axisymmetric bending test (called here as coin bending test) limited to monitoring of the coating failure was used. Experiments revealed mechanism of the coating failure, as cracking initiated from coating surface defects and/or substrate was demonstrated using indentation technique. By pushing the center of the uncoated side of a circular plate, the axisymmetric stress state was generated in the coating. The stress components varied gradually from the greatest value in the center to the smallest value at the edge of the specimen. The changes of the sample surface as a result of loading were monitored step by step via optical microscopy.