Tribological characterisation of PVD coatings for cutting tools

This work compares different coatings deposited on HSS and carbide drills using two different approaches. Tool life is measured during cutting tests when machining a grey cast iron. The parameter used to measure tool life is the number of holes per thickness of the coating. The results are then comp...

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Bibliographic Details
Published in:Surface & coatings technology 2004-06, Vol.184 (2), p.141-148
Main Authors: Santos, Sandro Cardoso, Sales, Wisley Falco, da Silva, Flávio José, Franco, Sinésio Domingues, da Silva, Marcio Bacci
Format: Article
Language:English
Subjects:
Coatings
Condensed matter: structure, mechanical and thermal properties
Drilling
Exact sciences and technology
Mechanical and acoustical properties
Micro-abrasion
Physical properties of thin films, nonelectronic
Physics
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:This work compares different coatings deposited on HSS and carbide drills using two different approaches. Tool life is measured during cutting tests when machining a grey cast iron. The parameter used to measure tool life is the number of holes per thickness of the coating. The results are then compared with the wear resistance coefficient of the coating, obtained after a micro-scale abrasive test. Four types of PVD coatings deposited on HSS and tungsten carbide drills are used. The results have shown a good correlation between tool life and wear coefficients for all combinations of cutting tool and coating, mainly for cemented carbide drills.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2003.10.153