METALLURGICAL STRUCTURE AND ALKALI LEACHING OF THE AL/AL3NI EUTECTIC

被引：9

作者：

COLIN, P

HAMARTHIBAULT, S

JOUD, JC

机构：

[1] LTPCM-ENSEEG, Saint Martin d'Hères, Cédex, 38402

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 09期

关键词：

D O I：

10.1007/BF01105039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Raney-Nickel catalysts were prepared by aluminium leaching out of aluminium-rich binary Al-Ni alloys. In order to understand the behaviour of NiAl3 during alkali leaching, different metallurgical structures of the Al/Al3Ni eutectic were prepared as precursor alloys. This eutectic showed a fibrous morphology with Al3Ni fibres embedded in an aluminium matrix. After alkali leaching, transmission electron microscopy observations showed that the fibrous microstructure was retained. The fibres were formed with small nickel crystallites. During the early stages of leaching, a reaction front was observed which remained parallel to the Al/Al3Ni interface.

引用

页码：2326 / 2334

页数：9

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