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

被引：25

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

页码：40 / 54

页数：15

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