TY - JOUR
T1 - Cavitation erosion mechanisms in stainless steels and in composite metal–ceramic HVOF coatings
AU - Taillon, Gabriel
AU - Pougoum, Fabrice
AU - Lavigne, Sebastien
AU - Ton-That, Laurent
AU - Schulz, Robert
AU - Bousser, Etienne
AU - Savoie, Sylvio
AU - Martinu, Ludvik
AU - Klemberg-Sapieha, Jolanta Ewa
N1 - Funding Information:
The authors wish to acknowledge financial support from NSERC and from Hydro-Quebec through the Multisectorial Industrial Research Chair in Coatings and Surface Engineering (IRC 433808 – 11). They also wish to thank Yves Drolet for HVOF coating deposition and bulk samples cutting, as well as Alexandre Lapointe, Marie-Andrée Ayotte and Robert Lacasse for fruitful discussions.
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/10/15
Y1 - 2016/10/15
N2 - Cavitation erosion is a leading cause of hydraulic machinery erosion: imploding cavitation bubbles cause impacts, pitting, and mass loss leading to the component׳s failure. Damage can be mitigated by the use of protective coatings tailored to resist pitting and crack nucleation, to greatly increase the part׳s lifetime. Coatings deposited with the High Velocity Oxy-Fuel (HVOF) process demonstrate low porosity, high hardness and high adhesion. In this work, the cavitation erosion behavior of martensitic and ferritic stainless steels and HVOF coatings prepared from pure Fe3Al powder and Fe3Al reinforced with nitride and boride phases was investigated using the G32 vibratory setup. The results are compared with coatings sprayed from commercial powders: WC–CoCr and Cr3C2–NiCr. HVOF coatings exhibit slightly lower erosion rates than martensitic stainless steels. The mechanical properties were evaluated using depth sensing indentation: higher hardness was associated with better cavitation erosion resistance for steels, but not for the coatings. The composite coatings’ wear mechanisms followed a matrix erosion pattern accompanied by ceramic grain removal.
AB - Cavitation erosion is a leading cause of hydraulic machinery erosion: imploding cavitation bubbles cause impacts, pitting, and mass loss leading to the component׳s failure. Damage can be mitigated by the use of protective coatings tailored to resist pitting and crack nucleation, to greatly increase the part׳s lifetime. Coatings deposited with the High Velocity Oxy-Fuel (HVOF) process demonstrate low porosity, high hardness and high adhesion. In this work, the cavitation erosion behavior of martensitic and ferritic stainless steels and HVOF coatings prepared from pure Fe3Al powder and Fe3Al reinforced with nitride and boride phases was investigated using the G32 vibratory setup. The results are compared with coatings sprayed from commercial powders: WC–CoCr and Cr3C2–NiCr. HVOF coatings exhibit slightly lower erosion rates than martensitic stainless steels. The mechanical properties were evaluated using depth sensing indentation: higher hardness was associated with better cavitation erosion resistance for steels, but not for the coatings. The composite coatings’ wear mechanisms followed a matrix erosion pattern accompanied by ceramic grain removal.
KW - Ball-milling
KW - Cavitation erosion
KW - HVOF
KW - Martensitic/Ferritic steels
KW - Metal ceramic composite
KW - Wear mechanisms
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U2 - 10.1016/j.wear.2016.07.015
DO - 10.1016/j.wear.2016.07.015
M3 - Article
AN - SCOPUS:84981274432
SN - 0043-1648
VL - 364-365
SP - 201
EP - 210
JO - Wear
JF - Wear
ER -