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

页码：169 / 175

页数：7

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