The influence of pH on sliding wear of WC-based materials

被引：42

作者：

Engqvist, H ^{[1
]}

Beste, U ^{[1
]}

Axén, N ^{[1
]}

机构：

[1] Uppsala Univ, Angstrom Lab, Tribomat Grp, S-75121 Uppsala, Sweden

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2000年 / 18卷 / 2-3期

关键词：

cemented carbides; wear; corrosion; binderless carbide; lubrication;

D O I：

10.1016/S0263-4368(00)00007-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cemented carbides with various binder metals and a binderless carbide have been evaluated in a self-mated lubricated pin-on-disc test. The pH of the water-based lubricants was varied between pH 1 and 14. The influence of pH on both friction and wear was measured. In order to clarify the changes in surface chemistry with pH, corrosion tests were also performed. The corroded and worn surfaces were studied with SEM, LOM, XRD, TEM, XPS and surface profilometry. The results showed a strong dependence between pH of the lubricant and wear rate. This was especially evident for the binderless carbide which showed a low wear rate in acidic environments and a high wear rate in high pH. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：103 / 109

页数：7

共 12 条

[1] A study of grain boundaries in a binderless cemented carbide [J].

Engqvist, H ;

Botton, GA ;

Axén, N ;

Hogmark, S .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 1998, 16 (4-6) :309-313

[2] Grooving wear of single-crystal tungsten carbide [J].

Engqvist, H ;

Ederyd, S ;

Axén, N ;

Hogmark, S .

WEAR, 1999, 230 (02) :165-174

[3]

Fernandes P. J. L., 1992, Journal of Hard Materials, V3, P185

[4]

FISCHER TE, 1988, ANNU REV MATER SCI, V18, P303

[5]

Fontana M., 1987, CORROSION ENG, V3rd

[6]

Human A. M., 1991, Journal of Hard Materials, V2, P245

[7] Electrochemical behaviour of tungsten-carbide hardmetals [J].

Human, AM ;

Exner, HE .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 209 (1-2) :180-191

[8] PROPERTIES OF ULTRA-FINE GRAIN BINDERLESS CEMENTED CARBIDE RCCFN [J].

IMASATO, S ;

TOKUMOTO, K ;

KITADA, T ;

SAKAGUCHI, S .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 1995, 13 (05) :305-312

[9] ROLE OF MICROSTRUCTURE AND MECHANICAL-PROPERTIES IN ABRASION [J].

LARSENBASSE, J .

SCRIPTA METALLURGICA ET MATERIALIA, 1990, 24 (05) :821-826

[10] A MOLECULAR MECHANISM FOR STRESS-CORROSION IN VITREOUS SILICA [J].

MICHALSKE, TA ;

FREIMAN, SW .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1983, 66 (04) :284-288

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