Effect of pressure on microstructure and corrosion resistance of RE65Co25Al10 (RE=Ce, La, Pr, Sm and Gd) metallic glass

被引：0

作者：

Xing, Q. ^{[1
,2
]}

Sun, Z. X. ^{[1
]}

Ge, W. J. ^{[1
]}

Zheng, Z. ^{[1
]}

Niu, S. Z. ^{[1
]}

Wang, Y. ^{[1
,2
]}

机构：

[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China

[2] Univ Jinan, Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China

来源：

MATERIALS RESEARCH INNOVATIONS | 2014年 / 18卷

关键词：

Metallic glass; Pressure; Microstructure; Corrosion resistance; Seawater solution; AL AMORPHOUS-ALLOYS; FREE-VOLUME; CRYSTALLIZATION BEHAVIOR; PLASTIC-DEFORMATION; FORMING ABILITY; PREPEAK; ND; TEMPERATURE; COMPOSITES; STABILITY;

D O I：

10.1179/1432891714Z.000000000779

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of pressure treatment at room temperature on the microstructure and corrosion resistance in seawater solution of the as spun RE65Co25Al10 (RE=Ce, La, Pr, Sm and Gd) metallic glass ribbons have been investigated using X-ray diffraction, differential scanning calorimetry, scanning electron microscopy and electrochemical workstation. The results indicate that the pressure treatment causes the changes of microstructure, which results in the variation of the glass transition temperature and supercooled liquid region of the RE65Co25Al10 metallic glass. The RE65Co25Al10 metallic glass treated by pressure in 16 kN exhibits low self-corrosion current density and distinct passive region, indicating the higher seawater corrosion resistance. However, the corrosion resistance of the RE65Co25Al10 metallic glass becomes poor with increasing pressure to 30 kN. The discussion of the corrosion mechanism has been made based upon the structural relaxation and bonding force of the matrix elements and oxygen during the electrochemical corrosion process.

引用

页码：770 / 776

页数：7

共 51 条

[1] THE ELECTROCHEMICAL PROPERTIES OF METALLIC GLASSES [J].

ARCHER, MD ;

CORKE, CC ;

HARJI, BH .

ELECTROCHIMICA ACTA, 1987, 32 (01) :13-26

[2] Free-volume evolution and its temperature dependence during rolling of Cu60Zr20Ti20 bulk metallic glass -: art. no. 101901 [J].

Cao, QP ;

Li, JF ;

Zhou, YH ;

Horsewell, A ;

Jiang, JZ .

APPLIED PHYSICS LETTERS, 2005, 87 (10)

[3] GLASSY METALS [J].

CHEN, HS .

REPORTS ON PROGRESS IN PHYSICS, 1980, 43 (04) :353-+

[4]

Dang SE, 2010, RARE METAL MAT ENG, V39, P538

[5] DENSITY CHANGE OF GLASSY PD77SI16.5CU6.5 ALLOY DURING COLD DRAWING [J].

DENG, DG ;

LU, BH .

SCRIPTA METALLURGICA, 1983, 17 (04) :515-518

[6] ON THE PITTING RESISTANCE OF SPUTTER-DEPOSITED ALUMINUM-ALLOYS [J].

FRANKEL, GS ;

NEWMAN, RC ;

JAHNES, CV ;

RUSSAK, MA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1993, 140 (08) :2192-2197

[7]

GUINIER A, 1963, XRAY DIFFRACTION CRY, P72

[8] SHORT-RANGE AND MEDIUM-RANGE ORDER IN LIQUID AU-GE ALLOYS [J].

HOYER, W ;

JODICKE, R .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1995, 193 :102-105

[9] Liquid fragility and characteristic of the structure corresponding to the prepeak of AlNiCe amorphous alloys [J].

Hu, LN ;

Bian, MF ;

Wang, WM ;

Zhang, JY ;

Jia, YB .

ACTA MATERIALIA, 2004, 52 (16) :4773-4781

[10] Cooling-rate dependence of the density of Pd40Ni10Cu30P20 bulk metallic glass -: art. no. 172201 [J].

Hu, X ;

Ng, SC ;

Feng, YP ;

Li, Y .

PHYSICAL REVIEW B, 2001, 64 (17)

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