Abstract
This paper deals with the evaluation of tribological properties of PVD coatings which are mainly used as wear resistance coatings. The aim of the work was to compare the tribological behaviour of TiCrN and TiAlCrN coatings deposited on the steel substrate using the technology of reactive cathode vapour deposition. The dry sliding wear of coatings has been investigated against tungsten carbide (WC) counterpart. The course of the friction coefficient indicated better sliding properties TiAlCrN with value 0.605 compared to TiCrN with friction coefficient value 0.877. The depth of worn-out surface amounted to about 2/3 of the worn-out surface of TiCrN coating. The surface of the WC ball showed higher roughening after tribo test of TiCrN.
Highlights
Dynamic industrial development places high demands on improvement of properties of materials stressed under operational conditions
This paper deals with the evaluation of tribological properties of PVD coatings which are mainly used as wear resistance coatings
The course of the friction coefficient indicated better sliding properties TiAlCrN with value 0.605 compared to TiCrN with friction coefficient value 0.877
Summary
Dynamic industrial development places high demands on improvement of properties of materials stressed under operational conditions. This concerns in the first place construction materials and materials for the production of tools and machine parts. High operational reliability and adequate service life are, in the majority of cases, dependent on the quality of parts surfaces [1]. This requirement is important because of the combination of various mechanisms of wear that can result in failure of tools. Complex geometry of tools frequently prevents the use of other methods of treatment besides machining [2] [3]. The service life of tools manufactured from steel for hot use depends on adequate
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