Effect of SiC Particulates on the Corrosion Behavior of Extruded AZ91/SiCp Composites during the Early Stage of Exposure

被引：34

作者：

Zhang, Chunyan ^{[1
,2
]}

Zhang, Tao ^{[1
,2
]}

Wang, Yanqiu ^{[2
]}

Wei, Fangfang ^{[1
,3
]}

Shao, Yawei ^{[1
,2
]}

Meng, Guozhe ^{[1
,2
]}

Wang, Fuhui ^{[1
,2
]}

Wu, Kun ^{[4
]}

机构：

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

[2] Harbin Engn Univ, Ministty Educ, Key Lab Superlight Mat & Surface Technol, Corros & Protect Lab, Harbin 150001, Peoples R China

[3] Univ Sci & Technol China, Coll Chem & Mat Sci, Hefei 230026, Peoples R China

[4] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 14期

基金：

中国国家自然科学基金;

关键词：

MAGNESIUM MATRIX COMPOSITES; AZ31 MG ALLOY; GALVANIC CORROSION; MICROSTRUCTURE EVOLUTION; MECHANICAL-PROPERTIES; HOT EXTRUSION; CHLORIDE; AZ91D; ORIENTATION; SULFATE;

D O I：

10.1149/2.0631514jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of SiC particulates (SiCp) on the corrosion of extruded AZ91 magnesium matrix composites (EX-AZ91/SiCp MMCs) was investigated by means of weight loss and electrochemical measurements. The results indicate that the corrosion resistance of EX-AZ91/SiCp MMCs significantly decreases with increasing SiCp volume fraction, which can be explained by the changes in microstructure. The significant refinement of the beta phase accelerates the cathodic hydrogen reduction process, and the preferential recrystallization of the beta phase around the SiCp results in a serious microgalvanic corrosion of the a phase adjacent to the SiCp and the SiCp eventually dropping out of the matrix. (C) 2015 The Electrochemical Society. All rights reserved.

引用

页码：C754 / C766

页数：13

共 31 条

[1] Evaluation of microstructural effects on corrosion behaviour of AZ91D magnesium alloy [J].

Ambat, R ;

Aung, NN ;

Zhou, W .

CORROSION SCIENCE, 2000, 42 (08) :1433-1455

[2] Effect of grain size and twins on corrosion behaviour of AZ31B magnesium alloy [J].

Aung, Naing Naing ;

Zhou, Wei .

CORROSION SCIENCE, 2010, 52 (02) :589-594

[3] The relation between severe plastic deformation microstructure and corrosion behavior of AZ31 magnesium alloy [J].

Ben Hamu, G. ;

Eliezer, D. ;

Wagner, L. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 468 (1-2) :222-229

[4] Effect of submicron size SiC particulates on microstructure and mechanical properties of AZ91 magnesium matrix composites [J].

Deng, K. K. ;

Wu, K. ;

Wu, Y. W. ;

Nie, K. B. ;

Zheng, M. Y. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 504 (02) :542-547

[5] Microstructure evolution and mechanical properties of a particulate reinforced magnesium matrix composites forged at elevated temperatures [J].

Deng, K. K. ;

Wu, K. ;

Wang, X. J. ;

Wu, Y. W. ;

Hu, X. S. ;

Zheng, M. Y. ;

Gan, W. M. ;

Brokmeier, H. G. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (06) :1630-1635

[6] GALVANIC CORROSION BETWEEN SIC MONOFILAMENT AND MAGNESIUM IN NACL, NA2SO4 AND NANO3 SOLUTIONS FOR APPLICATION TO METAL-MATRIX COMPOSITES [J].

HIHARA, LH ;

KONDEPUDI, PK .

CORROSION SCIENCE, 1994, 36 (09) :1585-1595

[7] THE GALVANIC CORROSION OF SIC MONOFILAMENT/ZE41 MG METAL-MATRIX COMPOSITE IN 0.5 M NANO3 [J].

HIHARA, LH ;

KONDEPUDI, PK .

CORROSION SCIENCE, 1993, 34 (11) :1761-1772

[8] THE THERMOMECHANICAL PROCESSING OF AL-SIC PARTICULATE COMPOSITES [J].

HUMPHREYS, FJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 135 :267-273

[9] A corrosion study of the main constituent phases of AZ91 magnesium alloys [J].

Mathieu, S ;

Rapin, C ;

Steinmetz, J ;

Steinmetz, P .

CORROSION SCIENCE, 2003, 45 (12) :2741-2755

[10] Corrosion behaviour of high pressure die-cast and semi-solid cast AZ91D alloys [J].

Mathieu, S ;

Rapin, C ;

Hazan, J ;

Steinmetz, P .

CORROSION SCIENCE, 2002, 44 (12) :2737-2756

← 1 2 3 4 →