Effect of alloying addition of Pr on the dissolution rate of melt-spun Mg in 3% NaCl solution

被引:4
作者
Li, Y [1 ]
Lin, J
Loh, FC
Tan, KL
Chen, GL
Kam, CH
机构
[1] Natl Univ Singapore, Dept Mat Sci, Singapore 119260, Singapore
[2] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore
关键词
D O I
10.1023/A:1004340618168
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Melt-spun Mg-1 and 15 wt% Pr binary alloys were immersed in a 3% NaCl solution saturated with Mg(OH)(2) for up to 72 h. The dissolution rate was evaluated by hydrogen evolution method. Surface characterization of the pristine and corroded surfaces has been carried out using X-ray photoelectron spectroscopy (XPS), secondary ion mass spectroscopy (SIMS), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The surfaces of both the pristine and corroded samples were found to consist mainly of Mg(OH)(2) and MgO. However, results of XRD and SEM showed that the dominant product formed on the corroded sample was Mg(OH)(2). SIMS depth profiling showed that there was a depletion of Pr at the surfaces of Mg-Pr samples. (C) 1998 Chapman & Hall.
引用
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页码:1075 / 1081
页数:7
相关论文
共 14 条
[1]  
AHMED DS, 1990, MATER SCI TECH SER, V6, P469, DOI 10.1179/026708390790190928
[2]   THE STRUCTURE AND MORPHOLOGY OF THE CORROSION PRODUCTS FORMED ON THE SURFACES OF A RAPIDLY SOLIDIFIED MG-35 AL-ALLOY [J].
BALIGA, CB ;
TSAKIROPOULOS, P .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 134 :1029-1032
[3]   DEVELOPMENT OF CORROSION-RESISTANT MAGNESIUM ALLOYS .1. CHARACTERIZATION OF SPLAT QUENCHED MG-10AL AND MG-16AL ALLOYS [J].
BALIGA, CB ;
TSAKIROPOULOS, P .
MATERIALS SCIENCE AND TECHNOLOGY, 1993, 9 (06) :507-511
[4]   SURFACE CONTAMINATION AND ITS EFFECT ON THE CORROSION OF RAPIDLY SOLIDIFIED MG-AL ALLOY SPLATS [J].
BALIGA, CB ;
TSAKIROPOULOS, P ;
JEYNES, C .
JOURNAL OF MATERIALS SCIENCE, 1991, 26 (06) :1497-1504
[5]  
BALIGA CB, 1989, INT J RAPID SOLIDIF, V4, P231
[6]  
Chang C., 1988, US Patent, Patent No. [4,765,954, 4765954]
[7]  
CHASTAIN J, 1990, HDB XRAY PHOTOELECTR
[8]  
DAS SK, 1989, Patent No. 4853035
[9]   CORROSION BEHAVIOR OF RAPIDLY SOLIDIFIED MG-ND AND MG-Y ALLOYS [J].
KRISHNAMURTHY, S ;
KHOBAIB, M ;
ROBERTSON, E ;
FROES, FH .
MATERIALS SCIENCE AND ENGINEERING, 1988, 99 :507-511
[10]   Characterization of corrosion products formed on a rapidly solidified Mg based EA55RS alloy [J].
Li, Y ;
Lin, J ;
Loh, FC ;
Tan, KL ;
Jones, H .
JOURNAL OF MATERIALS SCIENCE, 1996, 31 (15) :4017-4023