THERMAL-DISSOCIATION OF ULTRAFINE PASSIVATED NI POWDER

被引：2

作者：

PEDERSEN, AS ^{[1
]}

SETHI, SA ^{[1
]}

ELDRUP, M ^{[1
]}

机构：

[1] NATL INST OCCUPAT HLTH,DK-2100 COPENHAGEN 0,DENMARK

来源：

NANOSTRUCTURED MATERIALS | 1995年 / 5卷 / 01期

关键词：

D O I：

10.1016/0965-9773(95)00009-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrafine metallic nickel was produced by the evaporation/condensation technique and subsequently passivated by controlled exposure to atmospheric air. The kinetic and thermodynamic properties of this material during heating in inert gas was studied by microgravimetry, differential scanning calorimetry and differential thermal analysis. The properties were found to be significantly different from the properties of commercial nickel oxide, viz. a smaller stability and a higher dissociation rare of the ultrafine material. The dissociation upon heating in He was found to be composed of two steps and the activation energies of the steps were measured to be 136 and 26 kJ/mol respectively.

引用

页码：79 / 86

页数：8

共 14 条

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