OXIDATION BEHAVIOR OF ALUMINUM NANOPOWDERS

被引：210

作者：

AUMANN, CE

SKOFRONICK, GL

MARTIN, JA

机构：

[1] Los Alamos Natl Lab, Los Alamos

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 1995年 / 13卷 / 03期

关键词：

D O I：

10.1116/1.588232

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Rutherford backscattering spectrometry, thermogravimetric analysis, and high-resolution transmission electron microscopy were used to investigate the oxidation behavior of ultrafine grain aluminum powder. Fractional change in mass of Al powder samples were obtained as a function of temperature and exposure time for samples with different particle size distributions. As expected from surface energy considerations, the activation energy for oxidation of ultrafine grain particles is less than that for nominally flat surfaces. Activation energy for oxidation of powder samples with average particle diameters from 240 to 650 angstrom was determined to be 0.5 eV, which is smaller than the value of 1.7 eV known for flat Al samples.

引用

页码：1178 / 1183

页数：6

共 9 条

[1]

AUMANN CE, 1994, 471ST P M INS MUN DI, P392

[2] LOG-NORMAL SIZE DISTRIBUTIONS FROM MAGNETIZATION MEASUREMENTS ON SMALL SUPERCONDUCTING AL PARTICLES [J].