OXYGEN-CHEMISORPTION ON TRANSITION-METAL CARBIDE (100) SURFACES STUDIED BY X-RAY PHOTOELECTRON-SPECTROSCOPY AND LOW-ENERGY HE+ SCATTERING

被引：41

作者：

SOUDA, R ^{[1
]}

AIZAWA, T ^{[1
]}

OTANI, S ^{[1
]}

ISHIZAWA, Y ^{[1
]}

OSHIMA, C ^{[1
]}

机构：

[1] WASEDA UNIV, DEPT APPL PHYS, SHINJYUKU KU, TOKYO 169, JAPAN

来源：

SURFACE SCIENCE | 1991年 / 256卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(91)91196-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The mechanism for oxidation of the (100) surfaces of TiC, VC, ZrC, and TaC has been studied using X-ray photoemission and low-energy He+ ion scattering. The oxidation of TiC(100) is found to proceed into the bulk even at room temperature by replacing a part of the surface carbon atoms with oxygen and subsequent diffusion of oxygen into the bulk via carbon vacancies, suggesting that the preferential bonding of oxygen with carbon exists at the surface. In case of the (100) surfaces of VC and TaC, oxidation into the bulk is prevented by formation of an additional metal-oxygen bond at the surface. These significant differences will be elucidated on the basis of the electronic band structures characteristic of the transition-metal carbides.

引用

页码：19 / 26

页数：8

共 41 条

[1] STABLE CARBIDE FIELD EMITTER [J].

ADACHI, H ;

FUJII, K ;

ZAIMA, S ;

SHIBATA, Y ;

OSHIMA, C ;

OTANI, S ;

ISHIZAWA, Y .

APPLIED PHYSICS LETTERS, 1983, 43 (07) :702-703

[2] DIRECT ANALYSIS OF THE STRUCTURE, CONCENTRATION, AND CHEMICAL ACTIVITY OF SURFACE ATOMIC VACANCIES BY SPECIALIZED LOW-ENERGY ION-SCATTERING SPECTROSCOPY - TIC (001) [J].

AONO, M ;

HOU, Y ;

SOUDA, R ;

OSHIMA, C ;

OTANI, S ;

ISHIZAWA, Y .

PHYSICAL REVIEW LETTERS, 1983, 50 (17) :1293-1296

[3] QUANTITATIVE SURFACE ATOMIC GEOMETRY AND TWO-DIMENSIONAL SURFACE ELECTRON-DISTRIBUTION ANALYSIS BY A NEW TECHNIQUE IN LOW-ENERGY ION-SCATTERING [J].

AONO, M ;

OSHIMA, C ;

ZAIMA, S ;

OTANI, S ;

ISHIZAWA, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS, 1981, 20 (11) :L829-L832

[4] QUANTITATIVE SURFACE ATOMIC-STRUCTURE ANALYSIS BY LOW-ENERGY ION-SCATTERING SPECTROSCOPY (ISS) [J].

AONO, M ;

SOUDA, R .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1985, 24 (10) :1249-1262

[5] ELECTRON-DENSITIES AND CHEMICAL BONDING IN TIC, TIN, AND TIO DERIVED FROM ENERGY-BAND CALCULATIONS [J].

BLAHA, P ;

SCHWARZ, K .

INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, 1983, 23 (04) :1535-1552

[6]

BOHCLANSKY J, 1978, J NUCL MATER, V76, P163

[7] ELECTRONIC-PROPERTIES OF THE CLEAN AND HYDROGEN-COVERED TIC(111) TI-TERMINATED POLAR SURFACE [J].

BRADSHAW, AM ;

VANDERVEEN, JF ;

HIMPSEL, FJ ;

EASTMAN, DE .

SOLID STATE COMMUNICATIONS, 1981, 37 (01) :37-40

[8] ELECTRONIC-STRUCTURE OF TUNGSTEN CARBIDE AND ITS CATALYTIC BEHAVIOR [J].

COLTON, RJ ;

HUANG, JTJ ;

RABALAIS, JW .

CHEMICAL PHYSICS LETTERS, 1975, 34 (02) :337-339

[9] ELECTRONIC-STRUCTURE OF A POISONED TRANSITION-METAL SURFACE [J].

FEIBELMAN, PJ ;

HAMANN, DR .

PHYSICAL REVIEW LETTERS, 1984, 52 (01) :61-64

[10] ELECTRONIC-PROPERTIES OF TIC(100) AND POLAR TIC(111) SURFACES [J].

FUJIMORI, A ;

MINAMI, F ;

TSUDA, N .

SURFACE SCIENCE, 1982, 121 (02) :199-217

← 1 2 3 4 5 →