Tribological properties of stainless steels treated by colossal carbon supersaturation

Jun Qu; Peter J. Blau; Brian C. Jolly

doi:10.1016/j.wear.2006.12.049

Tribological properties of stainless steels treated by colossal carbon supersaturation

Jun Qu, Peter J. Blau, Brian C. Jolly

Surface Engineering and Tribology

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

54 Scopus citations

Abstract

A promising, alternative surface treatment to traditional case carburizing was recently developed. It enables extremely high ('colossal') supersaturation of carbon (up to 12 at.%) in austenitic stainless steel surfaces. This new treatment offers the advantage of hardening the surface while still retaining the corrosion resistance of stainless steels. In this study, the tribological properties of the colossal supersaturation carburized Type 316 stainless steel were investigated and benchmarked against non-treated steel. The carburized surfaces exhibited higher hardness, higher elastic modulus, and higher resistance to acid etching than non-treated surfaces. Hot hardness measurements were conducted and linear relations between the hardness and temperature were observed for both treated and non-treated specimens. The friction and wear characteristics were evaluated at both room and elevated temperatures (200 and 400 °C) under non-lubricated sliding conditions (pin-on-disk). Additional room-temperature tests were performed in salt water. Improved wear-resistance was observed on the treated surfaces at all test conditions, though less benefit was observed at elevated temperatures or in salt water.

Original language	English
Pages (from-to)	719-726
Number of pages	8
Journal	Wear
Volume	263
Issue number	1-6 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.wear.2006.12.049
State	Published - Sep 10 2007

Funding

The authors gratefully acknowledge the assistance of Dr. Sunniva Colins of Swagelok Co. for providing the treatments on test specimens, and Dr. Vinod Sikka, Oak Ridge National Laboratory, who served as the principal investigator for this research. This effort was funded by the U.S. Department of Energy, Office of Advanced Industrial Materials, under contract DE-AC05-00OR22725 with UT-Battelle, LLC.

Funders	Funder number
Office of Advanced Industrial Materials	DE-AC05-00OR22725
U.S. Department of Energy

Keywords

Colossal supersaturation carburization
Corrosion-resistance
Stainless steel
Wear-resistance

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10.1016/j.wear.2006.12.049

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abstract = "A promising, alternative surface treatment to traditional case carburizing was recently developed. It enables extremely high ('colossal') supersaturation of carbon (up to 12 at.%) in austenitic stainless steel surfaces. This new treatment offers the advantage of hardening the surface while still retaining the corrosion resistance of stainless steels. In this study, the tribological properties of the colossal supersaturation carburized Type 316 stainless steel were investigated and benchmarked against non-treated steel. The carburized surfaces exhibited higher hardness, higher elastic modulus, and higher resistance to acid etching than non-treated surfaces. Hot hardness measurements were conducted and linear relations between the hardness and temperature were observed for both treated and non-treated specimens. The friction and wear characteristics were evaluated at both room and elevated temperatures (200 and 400 °C) under non-lubricated sliding conditions (pin-on-disk). Additional room-temperature tests were performed in salt water. Improved wear-resistance was observed on the treated surfaces at all test conditions, though less benefit was observed at elevated temperatures or in salt water.",

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Tribological properties of stainless steels treated by colossal carbon supersaturation

Abstract

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Keywords

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