Friction and wear characteristics of WC-Co cemented carbides in dry reciprocating sliding contact

被引：115
作者：
Bonny, K. [1 ]
De Baets, P. [1 ]
Perez, Y. [1 ]
Vleugels, J. [2 ]
Lauwers, B. [3 ]
机构：
[1] Ghent Univ UGent, Mech Construct & Prod Dept, BE-9000 Ghent, Belgium
[2] Catholic Univ Leuven KU Leuven, Met & Mat Engn Dept, BE-3001 Louvain, Belgium
[3] Catholic Univ Leuven KU Leuven, Dept Mech Engn, BE-3001 Louvain, Belgium
来源：
WEAR | 2010年 / 268卷 / 11-12期
关键词：
WC- Co cemented carbide; Dry reciprocating sliding; Pin-on-plate; Velocity; Load; BEHAVIOR; HARDMETALS; CERAMICS; ABRASION; FRACTURE; TRANSITION; MECHANISMS; PARAMETERS; CERMETS; WC/CO;
D O I：
10.1016/j.wear.2010.02.029
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Friction and wear properties of WC-Co cemented carbides with Co concentrations ranging from 6 up to 12 wt% and WC grain sizes in the sub-micrometer scale have been examined in reciprocating sliding wear experiments using a high-frequency TE77 pin-on-plate system. The aim of the work was to investigate the influence of test parameters such as normal contact force, oscillating velocity and sliding distance on the tribological characteristics. The tests were carried out under unlubricated conditions. The generated wear was quantified volumetrically by means of surface topography scanning measurements. The changes in test parameters gave a variation in wear of more than one order of magnitude. A marked increase in wear was seen as the load increased, whereas the friction coefficient displayed an opposite trend. Raising the oscillating speed was found to increase both friction coefficient and wear level. The wear tracks and wear debris were analyzed by scanning electron microscopy (SEM), energy disperse X-ray spectrometry (EDX) and X-ray diffraction (XRD). The observed mechanisms of wear are discussed with respect to the magnitude of wear that was measured. (C) 2010 Elsevier B.V. All rights reserved.
引用
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页码：1504 / 1517
页数：14
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