Performance and Durability Enhancement of Tungsten Carbide Micro-Drills by Ti/ta-C Coatings

Vadim Samardak; Alexander S. Samardak; Alexey V. Ognev; Sergey Goloviatinski; Sergey Mikhallov; Victor Zavaleyev

doi:10.4028/www.scientific.net/KEM.806.76

Paper Titles

Plasma Electrolytic Formation of WO₃-CuO or WO₃-CuWO₄ Oxide Layers on Titanium
p.51

Solid State of Polymolybdenum(VI) Phenylsiloxanes - Synthesis and Structure
p.57

Localized Corrosion and Microstructure of the Aircraft Aluminium Alloy
p.64

Sn-Containing Oxide Coatings: Formation, Composition, Electroanalytical and Catalytic Properties
p.70

Performance and Durability Enhancement of Tungsten Carbide Micro-Drills by Ti/ta-C Coatings
p.76

Research of Heat Power in Friction Stir Spot Welding
p.81

Rate Constant Approximation with Cubic Splines for Kinetic Analysis of Temperature-Programmed Reduction Data
p.87

Phase Transitions and the Condition of Near-Interface Layer in PbZrO₃ Epitaxial Films on SrRuO₃/SrTiO₃ Substrate
p.93

Hydrolytic Lignin: It’s Activated and Fluorinated Forms
p.100

HomeKey Engineering MaterialsKey Engineering Materials Vol. 806Performance and Durability Enhancement of Tungsten...

Performance and Durability Enhancement of Tungsten Carbide Micro-Drills by Ti/ta-C Coatings

Abstract:

This paper presents results of the application of Ti/ta-C films to micro drilling operation for machining. Tetrahedral amorphous carbon (ta-C) films were successfully deposited on WC-Co substrates by a filtered cathodic vacuum arc (FCVA) system. The mechanical and flexion properties of Ti/ta-C films were systematically investigated. The experimental results show that the Ti/ta-C coated micro drills have the excellent microhardness, adhesion and flexion properties and represent the optimal coatings for micro drilling applications. The role of the Ti –sublayer on a sintered powder tungsten carbide substrate is not only limited by the adhesion improvement, but it is mainly used to neutralise the grain boundary microcracks on a surface. The results of drilling tests carried out on PCB boards showed that the durability and drilling efficiency of tools coated by Ti/ta-C films are significantly higher than that of uncoated ones.

You might also be interested in these eBooks

Physics and Technology of Nanostructured Materials IV (Supplement Book)

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 806)

Pages:

76-80

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.806.76

Citation:

Cite this paper

Online since:

June 2019

Authors:

Vadim Samardak*, Alexander S. Samardak, Alexey V. Ognev, Sergey Goloviatinski, Sergey Mikhallov, Victor Zavaleyev

Keywords:

Adhesion, Bending, FCVA, Flexion, Microhardness, Tetrahedral Amorphous Carbon (ta-C), Titanium Interlayer, WC-Co

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] J. Robertson, Diamond like amorphous carbon, Materials Science and Engineering R 37 (2002) 129-281.

Google Scholar

[2] A. Anders, Cathodic Arcs — From Fractal Spots to Energetic Condensation, Springer, New York, (2008).

DOI: 10.1007/978-0-387-79108-1

Google Scholar

[3] D R McKenzie, Tetrahedral bonding in amorphous carbon, Rep. Prog. Phys. 59 (1996) 1611–1664.

DOI: 10.1088/0034-4885/59/12/002

Google Scholar

[4] V. Zavaleyev, J. Walkowicz, G. Greczynski, L. Hultman, Effect of substrate temperature on properties of diamond-like films deposited by combined DC impulse vacuum-arc method, Surf. Coat. Technol. 236 (2013) 444 – 449.

DOI: 10.1016/j.surfcoat.2013.10.023

Google Scholar

[5] M. Hakovirta, Hardmetal woodcutting tool tips coated with tetrahedral amorphous carbon, Diamond and Related Materials 8 (1999) 1225–1228.

DOI: 10.1016/s0925-9635(99)00097-7

Google Scholar

[6] C.A. Charitidis, Nanomechanical and nanotribological properties of carbon-based thin films: A review, Int. Journal of Refractory Metals & Hard Materials 28 (2010) 51–70.

DOI: 10.1016/j.ijrmhm.2009.08.003

Google Scholar

[7] H.Y. Ueng, C.T. Guo, K.-H. Dittric, Development of a hybrid coating process for deposition of diamond-like carbon films on microdrills, Surface & Coatings Technology 200 (2006) 2900–2908.

DOI: 10.1016/j.surfcoat.2005.01.122

Google Scholar

[8] W.H. Kao, High-speed drilling performance of coated micro-drills with Zr–C:H:Nx% coatings, Wear 267 (2009) 1068–1074.

DOI: 10.1016/j.wear.2008.12.037

Google Scholar

[9] M.C. Kang, H.S. Tak, Y.K. Jeong, H.W. Lee, J.S. Kim, Properties and tool performance of ta-C films deposited by double-bend filtered cathodic vacuum arc for micro drilling applications, Diamond & Related Materials 19 (2010) 866–869.

DOI: 10.1016/j.diamond.2010.02.002

Google Scholar

[10] C.W. Chu, ason S.C. Jang, H.W. Chen, T.L. Chuang, Enhanced wear resistance of the Cr-based thin film coating on micro drill by doping with W–C–N, Thin Solid Films 517 (2009) 5197–5201.

DOI: 10.1016/j.tsf.2009.03.052

Google Scholar