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Performance and Durability Enhancement of Tungsten Carbide Micro-Drills by Ti/ta-C Coatings by Samardak, Vadim Yu.; Samardak, Alexander S.; Ognev, Alexey V.; Goloviatinski, Sergey; Mikhallov, Sergey N.; Zavaleyev, Victor is a Engineering article available to read on EtoBox.
What is Performance and Durability Enhancement of Tungsten Carbide Micro-Drills by Ti/ta-C Coatings about?
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.
Who reads Performance and Durability Enhancement of Tungsten Carbide Micro-Drills by Ti/ta-C Coatings?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Samardak, Vadim Yu.; Samardak, Alexander S.; Ognev, Alexey V.; Goloviatinski, Sergey; Mikhallov, Sergey N.; Zavaleyev, Victor
- Publisher
- Trans Tech Publications, Ltd.; Trans Tech Publications Ltd. (ISSN 1662-9795)
- Published
- 2019
- Language
- EN
- Field
- Engineering (Physical Sciences)