<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>A cavitation degradation process and fatigue phenomenon were described. Similarly to fatigue phenomenon, cavitation pulses division into three fractions was suggested. The action of each fraction was respectively compared to low-cycle fatigue, high-cycle fatigue and low-amplitude fatigue. The action of each fraction was described separately. Detailed analysis of the influence of each fraction on the degradation process shows that besides mechanical loading also thermal loading occurs. The cavitation erosion is assumed to be the sum of degradation of each fraction. Thus, the model of PVD coatings degradation under action of cavitation pulses include variable-amplitude and variable-temperature fatigue.</p></abstract>

A cavitation degradation process and fatigue phenomenon were described. Similarly to fatigue phenomenon, cavitation pulses division into three fractions was suggested. The action of each fraction was respectively compared to low-cycle fatigue, high-cycle fatigue and low-amplitude fatigue. The action of each fraction was described separately. Detailed analysis of the influence of each fraction on the degradation process shows that besides mechanical loading also thermal loading occurs. The cavitation erosion is assumed to be the sum of degradation of each fraction. Thus, the model of PVD coatings degradation under action of cavitation pulses include variable-amplitude and variable-temperature fatigue.

Cavitation degradation model of hard thin pvd coatings

Polish Academy of Sciences, Cavitation Group, Szewalski Institute of Fluid-Flow Machinery, ul. Fiszera 14, 80-231 Gdansk, Poland

Advances in Materials Science

{"article-title":"Cavitation degradation model of hard thin pvd coatings"}

A cavitation degradation process and fatigue phenomenon were described. Similarly to fatigue phenomenon, cavitation pulses division into three fractions was...

Cavitation degradation model of hard thin pvd coatings

Publié en ligne: 20 déc. 2010

Pages: 27 - 36

DOI: https://doi.org/10.2478/v10077-010-0010-4

Mots clés
hard PVD coatings, cavitation, fatigue fracture, impact

This content is open access.

Cavitation degradation model of hard thin pvd coatings

Publié en ligne: 20 déc. 2010

Pages: 27 - 36

DOI: https://doi.org/10.2478/v10077-010-0010-4

Mots cléshard PVD coatings, cavitation, fatigue fracture, impact

This content is open access.

Mots clés
hard PVD coatings, cavitation, fatigue fracture, impact