Effect of carbon content in TiC x N1-x coating on the adhesivity of carbide cutting tools and machining performance

Titanium carbonitride (TiCN) is a popular hard coating for carbide cutting tools in various applications. This paper studied the influence of the carbon content and coating composition within TiC x N1-x coatings with regard to their adhesive strength on tungsten carbide substrate and subsequently, t...

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Bibliographic Details
Published in:Journal of materials research 2016-07, Vol.31 (13), p.1880
Main Authors: Siow, Ping Chuan, Abdul Ghani, Jaharah, Che Haron, Che Hassan, Ghazali, Mariyam Jameelah, Ria Jaafar, Talib
Format: Article
Language:English
Subjects:
Adhesion
Adhesives
Bond strength
Carbide cutting tools
Carbon
Materials research
Nitrogen
Powder metallurgy
Titanium
Topography
Wear resistance
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Summary:Titanium carbonitride (TiCN) is a popular hard coating for carbide cutting tools in various applications. This paper studied the influence of the carbon content and coating composition within TiC x N1-x coatings with regard to their adhesive strength on tungsten carbide substrate and subsequently, the performance of cutting tool in the dry turning of stainless steel. Among all the TiC x N1-x coatings, the TiCN coating has exhibited the highest adhesivity onto a substrate, followed by a TiC coating and lastly, a TiN coating. It was found that the adhesive strength of TiCN coating increased with the carbon content. The C/N ratio or C-N bond is a vital contributor to the adhesivity of the TiC x N1-x coating rather than the C or N atoms in the TiC x N1-x coating. It was found that the coating was delaminated before the exposure of substrate material. Hence, coating with higher adhesivity will promote longer tool life.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2016.16