A systematic investigation on the diamond wear mechanism during the dry scratching of WC/Co

Quanli Zhang; Qingliang Zhao; Honghua Su; Suet To

doi:10.1016/j.ijrmhm.2017.10.006

A systematic investigation on the diamond wear mechanism during the dry scratching of WC/Co

Quanli Zhang, Qingliang Zhao, Honghua Su, Suet To

Research output: Journal article publication › Journal article › Academic research › peer-review

18 Citations (Scopus)

Abstract

In the present work, the diamond wear mechanism during the scratching test is studied by Raman spectroscopy, backscattering electron scanning microscope (BSEM), energy dispersive X-ray spectroscopy (EDS) and X ray photoelectron spectroscopy (XPS). As the impact pressure reached the fracture strength of the diamond, surface chipping of the diamond grits occurred as the dominated diamond wear mechanism, which resulted in the formation of scattered micro diamond flakes on WC/Co surface. The transformation of diamond to graphite and oxidation of graphite are identified at the chip formation stage during the diamond scratching of WC/Co. In addition, the formation of tetrahedrally bonded amorphous carbon phase is proposed as new wear mechanisms under the dynamic loads.

Original language	English
Pages (from-to)	184-190
Number of pages	7
Journal	International Journal of Refractory Metals and Hard Materials
Volume	70
DOIs	https://doi.org/10.1016/j.ijrmhm.2017.10.006
Publication status	Published - 1 Jan 2018

Keywords

Diamond wear
Phase transformation
Scratching
WC/Co

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

More information

10.1016/j.ijrmhm.2017.10.006

http://hdl.handle.net/10397/104282

Cite this

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title = "A systematic investigation on the diamond wear mechanism during the dry scratching of WC/Co",

abstract = "In the present work, the diamond wear mechanism during the scratching test is studied by Raman spectroscopy, backscattering electron scanning microscope (BSEM), energy dispersive X-ray spectroscopy (EDS) and X ray photoelectron spectroscopy (XPS). As the impact pressure reached the fracture strength of the diamond, surface chipping of the diamond grits occurred as the dominated diamond wear mechanism, which resulted in the formation of scattered micro diamond flakes on WC/Co surface. The transformation of diamond to graphite and oxidation of graphite are identified at the chip formation stage during the diamond scratching of WC/Co. In addition, the formation of tetrahedrally bonded amorphous carbon phase is proposed as new wear mechanisms under the dynamic loads.",

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T1 - A systematic investigation on the diamond wear mechanism during the dry scratching of WC/Co

AU - Zhang, Quanli

AU - Zhao, Qingliang

AU - Su, Honghua

AU - To, Suet

PY - 2018/1/1

Y1 - 2018/1/1

N2 - In the present work, the diamond wear mechanism during the scratching test is studied by Raman spectroscopy, backscattering electron scanning microscope (BSEM), energy dispersive X-ray spectroscopy (EDS) and X ray photoelectron spectroscopy (XPS). As the impact pressure reached the fracture strength of the diamond, surface chipping of the diamond grits occurred as the dominated diamond wear mechanism, which resulted in the formation of scattered micro diamond flakes on WC/Co surface. The transformation of diamond to graphite and oxidation of graphite are identified at the chip formation stage during the diamond scratching of WC/Co. In addition, the formation of tetrahedrally bonded amorphous carbon phase is proposed as new wear mechanisms under the dynamic loads.

AB - In the present work, the diamond wear mechanism during the scratching test is studied by Raman spectroscopy, backscattering electron scanning microscope (BSEM), energy dispersive X-ray spectroscopy (EDS) and X ray photoelectron spectroscopy (XPS). As the impact pressure reached the fracture strength of the diamond, surface chipping of the diamond grits occurred as the dominated diamond wear mechanism, which resulted in the formation of scattered micro diamond flakes on WC/Co surface. The transformation of diamond to graphite and oxidation of graphite are identified at the chip formation stage during the diamond scratching of WC/Co. In addition, the formation of tetrahedrally bonded amorphous carbon phase is proposed as new wear mechanisms under the dynamic loads.

KW - Diamond wear

KW - Phase transformation

KW - Scratching

KW - WC/Co

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U2 - 10.1016/j.ijrmhm.2017.10.006

DO - 10.1016/j.ijrmhm.2017.10.006

M3 - Journal article

SN - 0263-4368

VL - 70

SP - 184

EP - 190

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

ER -

A systematic investigation on the diamond wear mechanism during the dry scratching of WC/Co

Abstract

Keywords

ASJC Scopus subject areas

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