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Tribological Performance of CrAlSiN Coatings at High Temperatures
Author(s) -
Polcar Tomas,
Vitu Tomas,
Sondor Jozef,
Cavaleiro Albano
Publication year - 2009
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200932307
Subject(s) - materials science , tribology , chromium nitride , coating , metallurgy , nitride , cathodic protection , aluminium , physical vapor deposition , deposition (geology) , thermal stability , chromium , cathodic arc deposition , composite material , electrochemistry , chemical engineering , layer (electronics) , electrode , paleontology , chemistry , sediment , engineering , biology
Chromium aluminum nitride (CrAlN) coatings produced by PVD are routinely deposited on tools and tested as components for machining and forming applications. However, the addition of a doping element, such as Si, can further improve the properties of such coatings. In this study, CrAlN and CrAlSiN coatings with different Cr/Al ratio were prepared on WC substrates by low cathodic arc deposition and their structure and tribological properties analyzed in situ at high temperatures. In spite of excellent thermal stability and oxidation resistance, the hot‐sliding tests showed unsatisfactory coating behavior.