Surface finishing: Impact on tribological characteristics of WC-Co hardmetals

被引：23
|
作者：
Bonny, K. [1 ]
De Baets, P. [1 ]
Quintelier, J. [1 ]
Vleugels, J. [2 ]
Jiang, D. [2 ]
Van der Biest, O. [2 ]
Lauwers, B. [3 ]
Liu, W. [3 ]
机构：
[1] Univ Ghent, Mech Construct & Prod Dept, BE-9000 Ghent, Belgium
[2] Catholic Univ Louvain, KU Leuven, Dept Met & Mat Engn, BE-3001 Louvain, Belgium
[3] Catholic Univ Louvain, KU Leuven, Dept Mech Engn, BE-3001 Louvain, Belgium
来源：
TRIBOLOGY INTERNATIONAL | 2010年 / 43卷 / 1-2期
关键词：
WC-Co cemented carbide; Surface finish; Wire-EDM; Dry reciprocating sliding; Pin-on-plate; RECIPROCATING SLIDING FRICTION; ELECTRICAL-DISCHARGE ENERGY; CEMENTED CARBIDES; WEAR RESPONSE; TUNGSTEN CARBIDE; ROUGHNESS; CONTACT; EDM; PARTICLES; FRACTURE;
D O I：
10.1016/j.triboint.2009.04.029
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Flat samples of WC-Co hardmetals with 6-12 wt%Co were surface finished by grinding polishing and wire-electro-discharge machining (EDM). Comparative dry reciprocating sliding experiments against WC-6wt%Co pins were performed using a Plint TE77 tribometer. Tribological characteristics were recorded online. Wear Surfaces were characterized by surface scanning topography and scanning electron microscopy. Wire-EDM'ed samples exhibited higher friction and wear compared to ground and polished equivalents. This trend was correlated to X-ray diffraction measurements revealing tensile residual surface stresses in WC after wire-EDM contrary to compressive surface stresses after grinding and polishing. However, finer executed EDM reduces friction and wear significantly. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：40 / 54
页数：15
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