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Structure and Wear Mechanisms of Nanostructured TiAlCN/VCN Multilayer Coatings
Author(s) -
Luo Quanshun,
Schimpf Christian,
Ehiasarian Arutian P.,
Chen Linghao,
Hovsepian Papken Eh.
Publication year - 2007
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.200732205
Subject(s) - materials science , microstructure , coating , raman spectroscopy , scanning electron microscope , composite material , nitride , friction coefficient , metallurgy , layer (electronics) , optics , physics
Dry sliding wear of transition metal nitride coatings usually results in a dense and strongly adhered tribofilm on the worn surface. This paper presents detailed electron microscopy and Raman spectroscopy characterizations of the microstructure, a newly developed multilayer coating TiAlCN/VCN and its worn surface after pin‐on‐disc sliding wear against an alumina ball. The friction coefficient in a range of 0.38–0.6 was determined to be related to the environmental humidity, which resulted in a wear coefficient of the coating varying between 10 −17 and 10 −16 m 3 · N −1 · m −1 . TEM observation of worn surfaces showed that, when carbon was incorporated in the nitride coating, the formation of dense tribofilm was inhibited.