Microstructure and electrochemical properties of nanostructured WC-10Co-4Cr coating prepared by HVOF spraying

被引：48

作者：

Hong, Sheng ^{[1
]}

Wu, Yuping ^{[1
]}

Zheng, Yugui ^{[2
]}

Wang, Bo ^{[1
]}

Gao, Wenwen ^{[1
]}

Lin, Jinran ^{[1
]}

机构：

[1] Hohai Univ, Coll Mech & Mat, Inst Met & Protect, Nanjing 210098, Jiangsu, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2013年 / 235卷

关键词：

HVOF; Nanostructured; WC-Co-Cr coating; Microstructure; Corrosion; STRONG ACIDIC ENVIRONMENT; IMPEDANCE PLANE DISPLAYS; SILT EROSION BEHAVIOR; WC-COCR COATINGS; HARD CHROMIUM; CORROSION BEHAVIOR; MECHANICAL-PROPERTIES; STABILITY CONDITIONS; METALLIC-GLASS; STEADY-STATE;

D O I：

10.1016/j.surfcoat.2013.08.029

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A nanostructured WC-10Co-4Cr coating was deposited on the substrate of AISI 1045 steel by means of high-velocity oxygen-fuel (HVOF) thermal spraying process. The detailed microstructures and phase composition of the coating were analyzed by using X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), differential scanning calorimeter (DSC) and high-resolution transmission electron microscope (HRTEM). It was revealed that the amorphous phase, nanoclusters and carbides, including W2C and WC were present in the coating. The coating with low porosity of 0.85% had a dense structure and good thermostability. The temperature of the amorphous phase transforming into the nanocrystalline structure was 645 degrees C. Corrosion behavior of the coatings was investigated by electrochemical measurement. The results showed that the coating exhibited better corrosion resistance than the hard chromium coating in 3.5 wt.% NaCl solution. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：582 / 588

页数：7

共 36 条

[21] Microstructure and properties of Fe-based amorphous metallic coating produced by high velocity axial plasma spraying [J].

Liu, X. Q. ;

Zheng, Y. G. ;

Chang, X. C. ;

Hou, W. L. ;

Wang, J. Q. ;

Tang, Z. ;

Burgess, A. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 484 (1-2) :300-307

[22] Microstructure and Corrosion Resistance of Plasma Sprayed Fe-Based Alloy Coating as an Alternative to Hard Chromium [J].

Lu, Wenhuan ;

Wu, Yuping ;

Zhang, Jingjing ;

Hong, Sheng ;

Zhang, Jianfeng ;

Li, Gaiye .

JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2011, 20 (05) :1063-1070

[23] A comparison of the corrosion behavior of WC-Co-Cr and WC-CoHVOF thermally sprayed coatings by in situ atomic force microscopy (AFM) [J].

Perry, JM ;

Neville, A ;

Hodgkiess, T .

JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2002, 11 (04) :536-541

[24] Influence of HVOF spraying parameters on the corrosion resistance of WC-CoCr coatings in strong acidic environment [J].

Picas, Josep A. ;

Ruperez, Elisa ;

Punset, Miquel ;

Forn, Antonio .

SURFACE & COATINGS TECHNOLOGY, 2013, 225 :47-57

[25] Properties of WC-CoCr Based Coatings Deposited by Different HVOF Thermal Spray Processes [J].

Picas, Josep A. ;

Punset, Miquel ;

Teresa Baile, M. ;

Martin, Enric ;

Forn, Antonio .

PLASMA PROCESSES AND POLYMERS, 2009, 6 :S948-S953

[26]

Ponnambalam V, 2004, J MATER RES, V19, P1320, DOI [10.1557/JMR.2004.0176, 10.1557/jmr.2004.0176]

[27] Electrochemical characterization of plasma sprayed WC-Co coatings by impedance techniques [J].

Saenger, R ;

Martin, D ;

Gabrielli, C .

SURFACE & COATINGS TECHNOLOGY, 2005, 194 (2-3) :335-343

[28] Friction moment prediction of HVOF coatings and electroplated hard chromium [J].

Sahraoui, T. ;

Guessasma, S. ;

Fenineche, N. E. .

MATERIALS LETTERS, 2008, 62 (03) :473-477

[29] Microstructural Characterization and Properties Evaluation of Ni-Based Hardfaced Coating on AISI 304 Stainless Steel by High Velocity Oxyfuel Coating Technique [J].

Sharma, Prashant ;

Majumdar, Jyotsna Dutta .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2013, 44A (01) :372-380

[30] Aspects of microstructure on the synergy and overall material loss of thermal spray coatings in erosion-corrosion environments [J].

Souza, V. A. D. ;

Neville, A. .

WEAR, 2007, 263 (339-346) :339-346

← 1 2 3 4 →