Atom probe study on the segregation behavior of the binary alloy Pt95Mo5

被引：3

作者：

Eckschlager, A ^{[1
]}

Athenstaedt, W ^{[1
]}

Leisch, M ^{[1
]}

机构：

[1] Graz Tech Univ, Inst Festkorperphys, A-8010 Graz, Austria

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1998年 / 361卷 / 6-7期

关键词：

D O I：

10.1007/s002160050987

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Atom-probe measurements have been carried out to study the segregation behavior of the binary alloy Pt95Mo5. On in situ annealed specimens a significant surface enrichment of molybdenum has been observed. Prolonged heat treatment results in a final Mo concentration of about 30 at.% extended about 2 nm into depth. This surface layer can be interpreted as the intermediate phase Pt2Mo. The experimental result can be satisfactorily explained with the quasichemical model of Guggenheim.

引用

页码：672 / 673

页数：2

共 6 条

[1] 3-DIMENSIONAL FIELD-ION MASS-SPECTROMETRY [J].

LEISCH, M .

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1994, 349 (1-3) :102-106

[2] A NEW APPROACH TO INTERFACE SEGREGATION - SURFACE DANGLING AND INTERATOMIC BOND EFFECTS IN BINARY-ALLOYS [J].

MEZEY, LZ ;

GIBER, J ;

HOFER, W ;

VARGA, P .

SURFACE SCIENCE, 1990, 234 (1-2) :197-209

[3] SURFACE COMPOSITION OF ALLOYS. [J].

Sachtler, W.M.H. .

Applications of surface science, 1983, 19 (1-4) :167-180

[4] SURFACE-COMPOSITION OF BINARY-ALLOYS [J].

SACHTLER, WMH ;

VANSANTEN, RA .

APPLICATIONS OF SURFACE SCIENCE, 1979, 3 (02) :121-144

[5] SURFACE-SANDWICH SEGREGATION IN PT-NI AND AG-NI ALLOYS - 2 DIFFERENT PHYSICAL ORIGINS FOR THE SAME PHENOMENON [J].

TREGLIA, G ;

LEGRAND, B .

PHYSICAL REVIEW B, 1987, 35 (09) :4338-4344

[6] BINARY ALLOY SURFACE COMPOSITIONS FROM BULK ALLOY THERMODYNAMIC DATA [J].

WILLIAMS, FL ;

NASON, D .

SURFACE SCIENCE, 1974, 45 (02) :377-408

← 1 →