Cavitation erosion of NiAl-bronze layers generated by friction surfacing

被引：82
|
作者：
Hanke, Stefanie [1 ]
Fischer, Alfons [1 ]
Beyer, Matthias [2 ]
dos Santos, Jorge [2 ]
机构：
[1] Univ Duisburg Essen, Inst Product Engn Mat Sci & Engn, D-47057 Duisburg, Germany
[2] GKSS Forschungszentrum Geesthacht GmbH, Inst Mat Res Mat Mech & Joining, Solid State Joining Proc WMP, D-21502 Geesthacht, Germany
来源：
WEAR | 2011年 / 273卷 / 01期
关键词：
Friction surfacing; NiAl-bronze; Cavitation; Erosion mechanisms; ALLOY;
D O I：
10.1016/j.wear.2011.06.002
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Friction surfacing is a solid-state process, which allows deposition welding at temperatures below the melting range. For this investigation coating layers of NiAl-bronze were deposited by friction surfacing on self-mating substrates, followed by microstructural characterisation. Further, cavitation tests were performed in order to investigate wear resistance. Cavitation erosion mechanisms were analysed by means of optical and electron microscopy. All coatings show incubation periods about twice as long as those of the substrate material, while their average rate of material loss is about one half of that of the substrate. The differences in cavitation erosion resistance are due to more ductile behaviour of the coatings, as well as corrosion increasing the wear of the as-cast material. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：32 / 37
页数：6
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