ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Machining of modern materials requires high performance tools. More than 60% ofmetal cutting tools used are coated to limit abrasive wear. As the harder material known to man,diamond and consequently Chemical Vapour Deposited (CVD) diamond coatings allow to increaseperformances of tungsten carbide tools, i.e. tool life, machined surface quality, and to decreasecosts. However, CVD diamond coated tools quality is very dependent on the surface preparation asmuch as the fabrication process parameters. This paper aims to discuss the influence of pretreatmentsbefore deposition, and thermal stresses induced by the cooling operation. Diamonddeposition process is described emphasizing the role of every step and its function. Some numericalsimulations of the residual stresses at the interface are presented, enlightening that tool geometry isan important factor while using a coating, and that tools must be designed for the diamond coating
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.526.55.pdf
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