Sliding and Rolling Wear Behavior of HVOF-Sprayed Coatings Derived from Conventional, Fine and Nanostructured WC-12Co Powders

被引：31

作者：

Tillmann, W. ^{[1
]}

Baumann, I. ^{[1
]}

Hollingsworth, P. S. ^{[1
]}

Hagen, L. ^{[1
]}

机构：

[1] Tech Univ Dortmund, Fac Mech Engn, Inst Mat Engn, D-44227 Dortmund, Germany

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2014年 / 23卷 / 1-2期

关键词：

HVOF; Nanostructured coatings; Fine structured coatings; WC-Co; Wear effects; Wear resistant coatings; Wear testing; Scaling effects; WC-CO COATINGS; CARBIDE GRAIN-SIZE; ABRASIVE WEAR; TRIBOLOGICAL PROPERTIES; EROSION BEHAVIOR; CERMET COATINGS; MU-M; MICROSTRUCTURE; PHASE;

D O I：

10.1007/s11666-013-0038-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fine structured and nanostructured materials represent a promising class of feedstock for future applications, which has also attracted increasing interest in the thermal spray technology. Within the field of wear protection, the application of fine structured or nanostructured WC-Co powders in the High Velocity Oxy-Fuel flame spraying technique (HVOF) provides novel possibilities for the manufacturing of cermet coatings with improved mechanical and tribological characteristics. In this study the tribological behavior of HVOF sprayed coatings derived from conventional, fine and nanostructured WC-12Co powders under sliding and rolling wear are investigated and the results are compared to C45 steel (Mat.-No. 1.0503). In addition, sliding and rolling wear effects on a microscopic level are scrutinized. It has been shown that under optimized spray conditions the corresponding fine and nanostructured WC-12Co coatings are able to obtain higher wear resistances and lower friction coefficients than the conventional coatings. This can be attributed to several scaling effects of the microstructure and to the phase evolution of the coating, which are discussed.

引用

页码：262 / 280

页数：19

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