Spectroscopic and scanning probe studies of oxygen and water on metal carbide surfaces

被引：16

作者：

Frantz, Peter ^{[1
]}

Didziulis, Stephen V. ^{[1
]}

Merrill, Philip B. ^{[2
]}

Perry, Scott S. ^{[2
]}

机构：

[1] Aerosp Corp, Surface Sci Dept, Mech & Mat Technol Ctr, El Segundo, CA 90245 USA

[2] Univ Houston, Dept Chem, Houston, TX 77204 USA

来源：

TRIBOLOGY LETTERS | 1998年 / 4卷 / 02期

关键词：

transition metal carbides; hard coatings; surface chemistry;

D O I：

10.1023/A:1019167524643

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Spectroscopic and scanning probe techniques were applied to the study of clean, (100) single-crystal surfaces of titanium carbide (TiC) and vanadium carbide (VC), and their interactions with oxygen and water. We find that oxygen adsorbs dissociatively on both surfaces, but discriminates between them by reacting with TiC to form an oxide while forming a metastable overlayer on VC. Water bonds molecularly and dissociatively at low temperatures and behaves similarly on both materials. These results are interpreted in the context of surface electronic structure.

引用

页码：141 / 148

页数：8

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