Optimizing the tribological properties and high-speed drilling performance of a-C:H coatings via nitrogen addition

W. H. Kao; Y. L. Su; S. H. Yao; H. C. Huang

doi:10.1016/j.surfcoat.2009.10.016

Optimizing the tribological properties and high-speed drilling performance of a-C:H coatings via nitrogen addition

W. H. Kao, Y. L. Su, S. H. Yao, H. C. Huang

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

a-C:H:N_x% coatings with various levels of nitrogen addition ranging from 0 to 29 at.% are deposited on high-speed steel substrates and micro-drills utilizing a Closed Field Unbalanced Magnetron (CFUBM) sputtering technique. The tribological properties of the various coatings are evaluated by performing reciprocating sliding wear tests against an AISI 1045 steel cylinder under an applied load of 100 N. Additionally, the machining performance of the coated micro-drills is investigated by conducting high-speed through-hole drilling tests utilizing Printed Circuit Board (PCB) specimens. The experimental results reveal that the a-C:H:N_8% coating possesses the best tribological properties, namely the lowest wear depth, the lowest friction coefficient and the longest lifetime. In addition, it is shown that the a-C:H:N_8% coating increases the lifetime of the micro-drill by a factor of three compared to that of an uncoated micro-drill.

Original language	English
Pages (from-to)	1277-1287
Number of pages	11
Journal	Surface and Coatings Technology
Volume	204
Issue number	8
DOIs	https://doi.org/10.1016/j.surfcoat.2009.10.016
Publication status	Published - 2010 Jan 15

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.surfcoat.2009.10.016

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abstract = "a-C:H:Nx% coatings with various levels of nitrogen addition ranging from 0 to 29 at.% are deposited on high-speed steel substrates and micro-drills utilizing a Closed Field Unbalanced Magnetron (CFUBM) sputtering technique. The tribological properties of the various coatings are evaluated by performing reciprocating sliding wear tests against an AISI 1045 steel cylinder under an applied load of 100 N. Additionally, the machining performance of the coated micro-drills is investigated by conducting high-speed through-hole drilling tests utilizing Printed Circuit Board (PCB) specimens. The experimental results reveal that the a-C:H:N8% coating possesses the best tribological properties, namely the lowest wear depth, the lowest friction coefficient and the longest lifetime. In addition, it is shown that the a-C:H:N8% coating increases the lifetime of the micro-drill by a factor of three compared to that of an uncoated micro-drill.",

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AU - Su, Y. L.

AU - Yao, S. H.

AU - Huang, H. C.

PY - 2010/1/15

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AB - a-C:H:Nx% coatings with various levels of nitrogen addition ranging from 0 to 29 at.% are deposited on high-speed steel substrates and micro-drills utilizing a Closed Field Unbalanced Magnetron (CFUBM) sputtering technique. The tribological properties of the various coatings are evaluated by performing reciprocating sliding wear tests against an AISI 1045 steel cylinder under an applied load of 100 N. Additionally, the machining performance of the coated micro-drills is investigated by conducting high-speed through-hole drilling tests utilizing Printed Circuit Board (PCB) specimens. The experimental results reveal that the a-C:H:N8% coating possesses the best tribological properties, namely the lowest wear depth, the lowest friction coefficient and the longest lifetime. In addition, it is shown that the a-C:H:N8% coating increases the lifetime of the micro-drill by a factor of three compared to that of an uncoated micro-drill.

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Optimizing the tribological properties and high-speed drilling performance of a-C:H coatings via nitrogen addition

Abstract

All Science Journal Classification (ASJC) codes

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