Tribological properties and rolling-contact-fatigue lives of TiN/SiNx multilayer coatings

Yu Hsia Chen; Igor A. Polonsky; Yip Wah Chung; Leon M. Keer

doi:10.1016/S0257-8972(02)00022-1

Tribological properties and rolling-contact-fatigue lives of TiN/SiN_x multilayer coatings

Yu Hsia Chen, Igor A. Polonsky, Yip Wah Chung^*, Leon M. Keer

^*Corresponding author for this work

Materials Science and Engineering

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

40 Scopus citations

Abstract

We reported in an earlier study the use of amorphous SiN_x to periodically interrupt the growth of TiN in order to suppress the columnar structure. X-Ray diffraction and transmission electron microscopy studies confirmed that the columnar growth was effectively suppressed. In this paper, we showed that these TiN/SiN_x multilayer coatings attain lower dry friction coefficient (half of TiN) and better nanoscratch resistance than TiN coatings. Block-on-ring wear tests showed that the wear rate of optimized TiN/SiN_x multilayer coatings is three times better than that of TiN coatings. Most important, the rolling-contact-fatigue life of the M50 bearing rod, coated with a 0.75 μm thick TiN/SiN_x multilayer coating, is more than 10 times (test stopped manually before failure) better than that of uncoated ones and five times better than rods coated with conventional TiN coatings. The optimum TiN/SiN_x coating thickness appears to be approximately 0.75 μm. This remarkable fatigue performance appears to be due to a combination of improved microstructure, adhesion, hardness and surface topography.

Original language	English (US)
Pages (from-to)	152-161
Number of pages	10
Journal	Surface and Coatings Technology
Volume	154
Issue number	2-3
DOIs	https://doi.org/10.1016/S0257-8972(02)00022-1
State	Published - May 15 2002

Funding

We would like to thank The Timken Company for supplying the M50 rods for rolling-contact-fatigue tests. We would like to thank Kitty W. Lee and Chad S. Korach for the help with rolling-contact-fatigue tests. The work is supported by the NSF DMII Grant No. 9877136 and Northwestern University Center for Surface Engineering and Tribology, funded under the NSF IUCRC Program.

Keywords

Block-on-ring wear tests
Fatigue performance
Friction coefficient
Multilayer coatings
Nanoscratch resistance
TiN/SiN

ASJC Scopus subject areas

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

Access to Document

10.1016/S0257-8972(02)00022-1

Cite this

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title = "Tribological properties and rolling-contact-fatigue lives of TiN/SiNx multilayer coatings",

abstract = "We reported in an earlier study the use of amorphous SiNx to periodically interrupt the growth of TiN in order to suppress the columnar structure. X-Ray diffraction and transmission electron microscopy studies confirmed that the columnar growth was effectively suppressed. In this paper, we showed that these TiN/SiNx multilayer coatings attain lower dry friction coefficient (half of TiN) and better nanoscratch resistance than TiN coatings. Block-on-ring wear tests showed that the wear rate of optimized TiN/SiNx multilayer coatings is three times better than that of TiN coatings. Most important, the rolling-contact-fatigue life of the M50 bearing rod, coated with a 0.75 μm thick TiN/SiNx multilayer coating, is more than 10 times (test stopped manually before failure) better than that of uncoated ones and five times better than rods coated with conventional TiN coatings. The optimum TiN/SiNx coating thickness appears to be approximately 0.75 μm. This remarkable fatigue performance appears to be due to a combination of improved microstructure, adhesion, hardness and surface topography.",

keywords = "Block-on-ring wear tests, Fatigue performance, Friction coefficient, Multilayer coatings, Nanoscratch resistance, TiN/SiN",

author = "Chen, \{Yu Hsia\} and Polonsky, \{Igor A.\} and Chung, \{Yip Wah\} and Keer, \{Leon M.\}",

note = "Funding Information: We would like to thank The Timken Company for supplying the M50 rods for rolling-contact-fatigue tests. We would like to thank Kitty W. Lee and Chad S. Korach for the help with rolling-contact-fatigue tests. The work is supported by the NSF DMII Grant No. 9877136 and Northwestern University Center for Surface Engineering and Tribology, funded under the NSF IUCRC Program.",

year = "2002",

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doi = "10.1016/S0257-8972(02)00022-1",

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T1 - Tribological properties and rolling-contact-fatigue lives of TiN/SiNx multilayer coatings

AU - Chen, Yu Hsia

AU - Polonsky, Igor A.

AU - Chung, Yip Wah

AU - Keer, Leon M.

N1 - Funding Information: We would like to thank The Timken Company for supplying the M50 rods for rolling-contact-fatigue tests. We would like to thank Kitty W. Lee and Chad S. Korach for the help with rolling-contact-fatigue tests. The work is supported by the NSF DMII Grant No. 9877136 and Northwestern University Center for Surface Engineering and Tribology, funded under the NSF IUCRC Program.

PY - 2002/5/15

Y1 - 2002/5/15

N2 - We reported in an earlier study the use of amorphous SiNx to periodically interrupt the growth of TiN in order to suppress the columnar structure. X-Ray diffraction and transmission electron microscopy studies confirmed that the columnar growth was effectively suppressed. In this paper, we showed that these TiN/SiNx multilayer coatings attain lower dry friction coefficient (half of TiN) and better nanoscratch resistance than TiN coatings. Block-on-ring wear tests showed that the wear rate of optimized TiN/SiNx multilayer coatings is three times better than that of TiN coatings. Most important, the rolling-contact-fatigue life of the M50 bearing rod, coated with a 0.75 μm thick TiN/SiNx multilayer coating, is more than 10 times (test stopped manually before failure) better than that of uncoated ones and five times better than rods coated with conventional TiN coatings. The optimum TiN/SiNx coating thickness appears to be approximately 0.75 μm. This remarkable fatigue performance appears to be due to a combination of improved microstructure, adhesion, hardness and surface topography.

AB - We reported in an earlier study the use of amorphous SiNx to periodically interrupt the growth of TiN in order to suppress the columnar structure. X-Ray diffraction and transmission electron microscopy studies confirmed that the columnar growth was effectively suppressed. In this paper, we showed that these TiN/SiNx multilayer coatings attain lower dry friction coefficient (half of TiN) and better nanoscratch resistance than TiN coatings. Block-on-ring wear tests showed that the wear rate of optimized TiN/SiNx multilayer coatings is three times better than that of TiN coatings. Most important, the rolling-contact-fatigue life of the M50 bearing rod, coated with a 0.75 μm thick TiN/SiNx multilayer coating, is more than 10 times (test stopped manually before failure) better than that of uncoated ones and five times better than rods coated with conventional TiN coatings. The optimum TiN/SiNx coating thickness appears to be approximately 0.75 μm. This remarkable fatigue performance appears to be due to a combination of improved microstructure, adhesion, hardness and surface topography.

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KW - Nanoscratch resistance

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