Surface gradient CoCrMo alloy generated by carbon ion implantation with enhanced tribocorrosion resistance

Chang Liu; Zhifeng Zhou; Powan Shum; Kwok Yan Li

doi:10.1016/j.surfcoat.2016.10.085

Surface gradient CoCrMo alloy generated by carbon ion implantation with enhanced tribocorrosion resistance

Chang Liu
, Zhifeng Zhou
, Powan Shum
, Kwok Yan Li

City University of Hong Kong

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

11 Scopus citations

Abstract

The CoCrMo alloy was ion implanted by carbon with implantation fluences from 1.0 × 10¹⁷ to 9.0 × 10¹⁷ ions/cm². The nanostructure and phase transformation in CoCrMo alloy due to carbon ion implantation were investigated using high-resolution transmission electron microscopy (HRTEM). The tribocorrosion behavior was investigated by using a ball-on-disk reciprocating wear tester equipped with a three-electrode electrochemical cell. It is found that the carbon ion-implanted CoCrMo alloy is composed of an amorphous layer, a transition layer with mixed amorphous/nanocrystalline, and the base material. The stacking faults (SFs) and nano ε-martensite enriched region are formed underneath the transition layer at higher implantation fluence. The material loss due to tribocorrosion is decreased by one order of magnitude after carbon ion implantation. The enhanced tribocorrosion performance can be explained by the formation of amorphous layer and the nanocrystallization during carbon ion implantation.

Original language	English
Pages (from-to)	590-594
Number of pages	5
Journal	Surface and Coatings Technology
Volume	320
DOIs	https://doi.org/10.1016/j.surfcoat.2016.10.085
State	Published - 25 Jun 2017
Externally published	Yes

Keywords

Friction
Ion implantation
Nanocrystals
TEM
Tribocorrosion

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10.1016/j.surfcoat.2016.10.085

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@article{e8653c971b72401db9a3c65d3232e823,

title = "Surface gradient CoCrMo alloy generated by carbon ion implantation with enhanced tribocorrosion resistance",

abstract = "The CoCrMo alloy was ion implanted by carbon with implantation fluences from 1.0 × 1017 to 9.0 × 1017 ions/cm2. The nanostructure and phase transformation in CoCrMo alloy due to carbon ion implantation were investigated using high-resolution transmission electron microscopy (HRTEM). The tribocorrosion behavior was investigated by using a ball-on-disk reciprocating wear tester equipped with a three-electrode electrochemical cell. It is found that the carbon ion-implanted CoCrMo alloy is composed of an amorphous layer, a transition layer with mixed amorphous/nanocrystalline, and the base material. The stacking faults (SFs) and nano ε-martensite enriched region are formed underneath the transition layer at higher implantation fluence. The material loss due to tribocorrosion is decreased by one order of magnitude after carbon ion implantation. The enhanced tribocorrosion performance can be explained by the formation of amorphous layer and the nanocrystallization during carbon ion implantation.",

keywords = "Friction, Ion implantation, Nanocrystals, TEM, Tribocorrosion",

author = "Chang Liu and Zhifeng Zhou and Powan Shum and Li, \{Kwok Yan\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

month = jun,

day = "25",

doi = "10.1016/j.surfcoat.2016.10.085",

language = "英语",

volume = "320",

pages = "590--594",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Surface gradient CoCrMo alloy generated by carbon ion implantation with enhanced tribocorrosion resistance

AU - Liu, Chang

AU - Zhou, Zhifeng

AU - Shum, Powan

AU - Li, Kwok Yan

PY - 2017/6/25

Y1 - 2017/6/25

N2 - The CoCrMo alloy was ion implanted by carbon with implantation fluences from 1.0 × 1017 to 9.0 × 1017 ions/cm2. The nanostructure and phase transformation in CoCrMo alloy due to carbon ion implantation were investigated using high-resolution transmission electron microscopy (HRTEM). The tribocorrosion behavior was investigated by using a ball-on-disk reciprocating wear tester equipped with a three-electrode electrochemical cell. It is found that the carbon ion-implanted CoCrMo alloy is composed of an amorphous layer, a transition layer with mixed amorphous/nanocrystalline, and the base material. The stacking faults (SFs) and nano ε-martensite enriched region are formed underneath the transition layer at higher implantation fluence. The material loss due to tribocorrosion is decreased by one order of magnitude after carbon ion implantation. The enhanced tribocorrosion performance can be explained by the formation of amorphous layer and the nanocrystallization during carbon ion implantation.

AB - The CoCrMo alloy was ion implanted by carbon with implantation fluences from 1.0 × 1017 to 9.0 × 1017 ions/cm2. The nanostructure and phase transformation in CoCrMo alloy due to carbon ion implantation were investigated using high-resolution transmission electron microscopy (HRTEM). The tribocorrosion behavior was investigated by using a ball-on-disk reciprocating wear tester equipped with a three-electrode electrochemical cell. It is found that the carbon ion-implanted CoCrMo alloy is composed of an amorphous layer, a transition layer with mixed amorphous/nanocrystalline, and the base material. The stacking faults (SFs) and nano ε-martensite enriched region are formed underneath the transition layer at higher implantation fluence. The material loss due to tribocorrosion is decreased by one order of magnitude after carbon ion implantation. The enhanced tribocorrosion performance can be explained by the formation of amorphous layer and the nanocrystallization during carbon ion implantation.

KW - Friction

KW - Ion implantation

KW - Nanocrystals

KW - TEM

KW - Tribocorrosion

UR - https://www.scopus.com/pages/publications/85008168826

U2 - 10.1016/j.surfcoat.2016.10.085

DO - 10.1016/j.surfcoat.2016.10.085

M3 - 文章

AN - SCOPUS:85008168826

SN - 0257-8972

VL - 320

SP - 590

EP - 594

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Surface gradient CoCrMo alloy generated by carbon ion implantation with enhanced tribocorrosion resistance

Abstract

Keywords

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