Formation and corrosion behavior of Fe-based amorphous metallic coatings by HVOF thermal spraying

被引：228

作者：

Zhou, Z. ^{[1
,2
]}

Wang, L. ^{[2
]}

Wang, F. C. ^{[2
]}

Zhang, H. F. ^{[3
]}

Liu, Y. B. ^{[2
]}

Xu, S. H. ^{[2
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

[2] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2009年 / 204卷 / 05期

关键词：

Fe-based amorphous coating; HVOF; Microstructure; Corrosion resistance; SUPERCOOLED LIQUID; GLASSY ALLOYS; BULK; STRENGTH; RESISTANCE; MECHANISMS; DIFFERENCE; NI;

D O I：

10.1016/j.surfcoat.2009.08.025

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

coatings with a composition of Fe48Cr15Mo14C15B6Y2 were prepared by means of high velocity oxygen fuel (HVOF) thermal spraying under different conditions. Microstructural studies show that the coatings present dense layered structure and low porosity with a fraction of nanocrystals precipitated. The porosity and fraction of the coatings decrease as the kerosene and oxygen flow increase within the parameter range examined. Corrosion behavior of the amorphous coatings was investigated by electrochemical measurement. The results show that the coatings are spontaneously passivated with wide passive region and low passive current density in 3.5% NaCl. 1 N HCl and 1 N H2SO4 solutions. and exhibit an excellent ability to resist localized corrosion. However, the corrosion resistance of the coatings decreases in 1 N NaOH solution with lower transpassive potential and passive region. In addition, the optimal spraying parameter improves the corrosion resistance of the amorphous coatings obviously due to the proper proportion of porosity and amorphous fraction. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：563 / 570

页数：8

共 44 条

[1] Wear-resistant amorphous and nanocomposite steel coatings [J].

Branagan, DJ ;

Swank, WD ;

Haggard, DC ;

Fincke, JR .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (10) :2615-2621

[2] Structural study of iron-based microstructured and nanostructured powders sprayed by HVOF thermal spraying [J].

Cherigui, M ;

Fenineche, NE ;

Coddet, C .

SURFACE & COATINGS TECHNOLOGY, 2005, 192 (01) :19-26

[3] Phase evolutions of bulk amorphous NiTiZrSiSn feedstock during thermal and kinetic spraying processes [J].

Choi, HS ;

Yoon, SH ;

Kim, GY ;

Jo, HH ;

Lee, CH .

SCRIPTA MATERIALIA, 2005, 53 (01) :125-130

[4] Synthesis and characterization of particulate reinforced Zr57Nb5Al10Cu15.4Ni12.6 bulk metallic glass composites [J].

Choi-Yim, H ;

Busch, R ;

Köster, U ;

Johnson, WL .

ACTA MATERIALIA, 1999, 47 (08) :2455-2462

[5] METALLIC GLASSES [J].

GREER, AL .

SCIENCE, 1995, 267 (5206) :1947-1953

[6] Wear resistance of amorphous alloys and related materials [J].

Greer, AL ;

Rutherford, KL ;

Hutchings, M .

INTERNATIONAL MATERIALS REVIEWS, 2002, 47 (02) :87-112

[7] Thermal spray: Current status and future trends [J].

Herman, Herbert ;

Sampath, Sanjay ;

McCune, Robert .

MRS Bulletin, 2000, Materials Research Society, Warrendale, PA, United States (25) :17-25

[8] Super-high strength of over 4000 MPa for Fe-based bulk glassy alloys in [(Fe1-x,COx)0.75B0.2Si0.05]96Nb4 system [J].

Inoue, A ;

Shen, BL ;

Chang, CT .

ACTA MATERIALIA, 2004, 52 (14) :4093-4099

[9]

Inoue A, 1996, SCI REP RES TOHOKU A, V42, P1

[10] Stabilization of metallic supercooled liquid and bulk amorphous alloys [J].

Inoue, A .

ACTA MATERIALIA, 2000, 48 (01) :279-306

← 1 2 3 4 5 →