Structure and water-lubricated tribological properties of Cr/a-C coatings with different Cr contents

Qianzhi Wang; Fei Zhou; Xiangdong Ding; Zhifeng Zhou; Chundong Wang; Wenjun Zhang; Lawrence Kwok Yan Li; Shuit Tong Lee

doi:10.1016/j.triboint.2013.07.002

Structure and water-lubricated tribological properties of Cr/a-C coatings with different Cr contents

Qianzhi Wang
, Fei Zhou
, Xiangdong Ding
, Zhifeng Zhou
, Chundong Wang
, Wenjun Zhang
, Lawrence Kwok Yan Li
, Shuit Tong Lee

School of Materials Science and Engineering

Nanjing University of Aeronautics and Astronautics
Xi'an Jiaotong University
City University of Hong Kong
Soochow University

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

36 Scopus citations

Abstract

The Cr containing amorphous carbon coatings (Cr/a-C) with varying Cr content were deposited using unbalanced magnetron sputtering. The results revealed that the chromium carbide nano-clusters were formed when the Cr content exceeded 4.9 at%. The critical load increased while the hardness decreased after the Cr element incorporation. Although the low Cr containing Cr/a-C coatings (≤4.9 at%) exhibited similar friction coefficient with a-C coatings, but the initial friction coefficient, running-in distance and wear rate of SUS440C balls all decreased. However, the Cr/a-C coatings with high Cr content (11.98-14.09 at%) would worsen the tribological properties because chromium carbides acted as abrasive wear particles during tribotests.

Original language	English
Pages (from-to)	104-115
Number of pages	12
Journal	Tribology International
Volume	67
DOIs	https://doi.org/10.1016/j.triboint.2013.07.002
State	Published - 2013

Keywords

Hydrogen-free carbon based coatings
Mechanical properties
Microstructure
Tribology

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10.1016/j.triboint.2013.07.002

Cite this

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title = "Structure and water-lubricated tribological properties of Cr/a-C coatings with different Cr contents",

abstract = "The Cr containing amorphous carbon coatings (Cr/a-C) with varying Cr content were deposited using unbalanced magnetron sputtering. The results revealed that the chromium carbide nano-clusters were formed when the Cr content exceeded 4.9 at\%. The critical load increased while the hardness decreased after the Cr element incorporation. Although the low Cr containing Cr/a-C coatings (≤4.9 at\%) exhibited similar friction coefficient with a-C coatings, but the initial friction coefficient, running-in distance and wear rate of SUS440C balls all decreased. However, the Cr/a-C coatings with high Cr content (11.98-14.09 at\%) would worsen the tribological properties because chromium carbides acted as abrasive wear particles during tribotests.",

keywords = "Hydrogen-free carbon based coatings, Mechanical properties, Microstructure, Tribology",

author = "Qianzhi Wang and Fei Zhou and Xiangdong Ding and Zhifeng Zhou and Chundong Wang and Wenjun Zhang and Li, \{Lawrence Kwok Yan\} and Lee, \{Shuit Tong\}",

year = "2013",

doi = "10.1016/j.triboint.2013.07.002",

language = "英语",

volume = "67",

pages = "104--115",

journal = "Tribology International",

issn = "0301-679X",

publisher = "Elsevier Inc.",

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TY - JOUR

T1 - Structure and water-lubricated tribological properties of Cr/a-C coatings with different Cr contents

AU - Wang, Qianzhi

AU - Zhou, Fei

AU - Ding, Xiangdong

AU - Zhou, Zhifeng

AU - Wang, Chundong

AU - Zhang, Wenjun

AU - Li, Lawrence Kwok Yan

AU - Lee, Shuit Tong

PY - 2013

Y1 - 2013

N2 - The Cr containing amorphous carbon coatings (Cr/a-C) with varying Cr content were deposited using unbalanced magnetron sputtering. The results revealed that the chromium carbide nano-clusters were formed when the Cr content exceeded 4.9 at%. The critical load increased while the hardness decreased after the Cr element incorporation. Although the low Cr containing Cr/a-C coatings (≤4.9 at%) exhibited similar friction coefficient with a-C coatings, but the initial friction coefficient, running-in distance and wear rate of SUS440C balls all decreased. However, the Cr/a-C coatings with high Cr content (11.98-14.09 at%) would worsen the tribological properties because chromium carbides acted as abrasive wear particles during tribotests.

AB - The Cr containing amorphous carbon coatings (Cr/a-C) with varying Cr content were deposited using unbalanced magnetron sputtering. The results revealed that the chromium carbide nano-clusters were formed when the Cr content exceeded 4.9 at%. The critical load increased while the hardness decreased after the Cr element incorporation. Although the low Cr containing Cr/a-C coatings (≤4.9 at%) exhibited similar friction coefficient with a-C coatings, but the initial friction coefficient, running-in distance and wear rate of SUS440C balls all decreased. However, the Cr/a-C coatings with high Cr content (11.98-14.09 at%) would worsen the tribological properties because chromium carbides acted as abrasive wear particles during tribotests.

KW - Hydrogen-free carbon based coatings

KW - Mechanical properties

KW - Microstructure

KW - Tribology

UR - https://www.scopus.com/pages/publications/84881516789

U2 - 10.1016/j.triboint.2013.07.002

DO - 10.1016/j.triboint.2013.07.002

M3 - 文章

AN - SCOPUS:84881516789

SN - 0301-679X

VL - 67

SP - 104

EP - 115

JO - Tribology International

JF - Tribology International

ER -

Structure and water-lubricated tribological properties of Cr/a-C coatings with different Cr contents

Abstract

Keywords

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