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TiC‐Based Cermet Coatings: Advanced Wear Performance by Nanocrystalline Microstructure
Author(s) -
Qi X.,
Aust E.,
Eigen N.,
Gärtner F.,
Klassen T.,
Bormann R.
Publication year - 2006
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200600031
Subject(s) - materials science , cermet , microstructure , nanocrystalline material , abrasive , microcrystalline , coating , metallurgy , toughness , composite material , fracture toughness , surface roughness , abrasion (mechanical) , surface finish , ceramic , nanotechnology , paleontology , biology
This paper highlights the influence of a refined microstructure on the wear behaviour of cermets by comparing TiC‐Ni based, VPS‐sprayed microcrystalline and nanocrystalline cermet coatings. The coatings are subjected to two‐body and three‐body abrasive wear at different loads. Fracture behaviour as well as mass loss and surface quality after the wear tests are evaluated. Although at low wear loads, the refined microstructure leads to a higher mass loss, at high loads the wear resistance of the nanocrystalline coating is superior. This behaviour is strongly related to a significantly higher toughness of the nanocrystalline coating. Independent of the wear load, the nanocrystalline microstructure leads to less surface roughness after wear.