Wear and impact behaviour of High Velocity Air-Fuel sprayed Fe-Cr-Ni-B-C alloy coatings

被引：45

作者：

Bolelli, Giovanni ^{[1
]}

Milanti, Andrea ^{[2
]}

Lusvarghi, Luca ^{[1
]}

Trombi, Lorenzo ^{[1
]}

Koivuluoto, Heli ^{[2
]}

Vuoristo, Petri ^{[2
]}

机构：

[1] Univ Modena & Reggio Emilia, Dept Engn Enzo Ferrari, Via Pietro Vivarelli 10-1, I-41125 Modena, MO, Italy

[2] Tampere Univ Technol, Dept Mat Sci, Korkeakoulunkatu 6, Tampere, Finland

来源：

TRIBOLOGY INTERNATIONAL | 2016年 / 95卷

关键词：

Thermally-sprayed coating; Sliding contact; Cavitation damage; Impact wear; CAVITATION EROSION; TRIBOLOGICAL BEHAVIOR; MECHANICAL-PROPERTIES; COMPOSITE COATINGS; OXIDE-FILMS; HVOF; MICROSTRUCTURE; CORROSION; IRON; TRIBOEMISSION;

D O I：

10.1016/j.triboint.2015.11.036

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The tribological properties of High Velocity Air-Fuel sprayed Fe-31Cr-12Ni-3.6B-0.6C (wt) coatings are studied as a function of the deposition parameters. At room temperature, ball-on-disk sliding against Al2O3 is controlled by abrasive grooving and interlamellar cracking, with some tribo-oxidation. Interlamellar crack propagation also controls the coatings response to cavitation erosion and cyclic impact tests. Coatings deposited with higher powder feed rate exhibit poorer performance under all conditions, because of weaker interlamellar cohesion. At 700 degrees C, sliding wear rates are levelled out, and they are one order of magnitude higher than at room temperature, because of severe abrasive grooving. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：372 / 390

页数：19

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