Surface modification of Al2O3 ceramic grains using a new RF sputtering system developed for powdery materials

被引：42

作者：

Abe, T ^{[1
]}

Akamaru, S ^{[1
]}

Watanabe, K ^{[1
]}

机构：

[1] Toyama Univ, Hydrogen Isotope Res Ctr, Toyama 9308555, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 377卷 / 1-2期

关键词：

hexagonal-barrel-sputtering system; surface modification of grains;

D O I：

10.1016/j.jallcom.2003.12.053

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：

A new RF sputtering system installed with a hexagonal-barrel was developed for modifying the surfaces of powdery materials. The validity of this system was examined for surface coating of three kinds of Al2O3 powders with different grain shapes and sizes. It was found that the surfaces of powder grains could be uniformly coated with Pt layers, regardless of their shapes and sizes. It should be noticed that the hexagonal barrel made it possible to form a uniform Pt layer over a Al2O3 grain of 20 mum diameter, whereas a cylindrical barrel failed to made a uniform layer on the same sample. Cyclic voltammograms (CVs) of the Pt-coated Al2O3 samples prepared by use of the hexagonal barrel gave the same CV of bulky Pt, indicating that electrochemical characteristics of the Pt films are identical with those of Pt metal. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：194 / 201

页数：8

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