Cracking resistance of Cr3C2-NiCr and WC-Cr3C2-Ni thermally sprayed coatings under tensile bending stress

被引：35
|
作者：
Mayrhofer, Erwin [1 ,2 ]
Janka, Leo [1 ,3 ]
Mayr, Wolfgang Peter [4 ]
Norpoth, Jonas [1 ]
Ripoll, Mane Rodriguez [1 ]
Groeschl, Martin [2 ]
机构：
[1] AC2T Res GmbH, A-2700 Wiener Neustadt, Austria
[2] Vienna Univ Technol, Inst Appl Phys, A-1040 Vienna, Austria
[3] Tampere Univ Technol, Dept Mat Sci, FI-33101 Tampere, Finland
[4] Voith Paper Rolls GmbH & Co KG, A-2632 Wimpassing, Austria
来源：
SURFACE & COATINGS TECHNOLOGY | 2015年 / 281卷
关键词：
Acoustic emission; HVOF thermal spray coating; Cr3C2; WC; Bending test; Cracking; SLIDING WEAR BEHAVIOR; ACOUSTIC-EMISSION; FRACTURE-TOUGHNESS; PERFORMANCE; EROSION; STEEL; WC-(W; CR)(2)C-NI; MICROSTRUCTURE; CARBIDES;
D O I：
10.1016/j.surfcoat.2015.09.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The cracking behaviour of Cr3C2-25(Ni20Cr) and WC-20Cr(3)C(2)-7Ni thermally sprayed coatings during tensile load in 3-point bending tests was studied by Acoustic Emission (AE) monitoring and microstructure postanalysis. The AE monitoring reveals a superior resistance against cracking in the WC-Cr3C2-Ni coatings compared to Cr3C2-NiCr. The incorporation of tungsten carbides beneficially affects the residual stress state of the coatings and has an impact on the detailed fracture mode. The results hold for both as-sprayed as well as ground and polished coatings. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：169 / 175
页数：7
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