OXIDATION PROTECTION OF MAGNETIC IRON PARTICLES BY ULTRATHIN LAYERS OF SILANES

Authors
KELLER H RENGEL H POGANIUCH P
Citation
H. Keller et al., OXIDATION PROTECTION OF MAGNETIC IRON PARTICLES BY ULTRATHIN LAYERS OF SILANES, Journal of magnetism and magnetic materials, 155(1-3), 1996, pp. 101-103
Citations number
4
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
155
Issue
1-3
Year of publication
1996
Pages
101 - 103
Database
ISI
SICI code
0304-8853(1996)155:1-3<101:OPOMIP>2.0.ZU;2-X
Abstract
Trimethoxysilanes with long alkyl chains (C12-C18) and tetramethoxysil ane are adsorbed on iron pigments. The silane molecules adsorb strongl y to the iron pigments and form ultrathin layers on the surface. Upon exposure to hot and humid atmosphere, these layers reduce the loss of magnetization from 6.3 nT m(3) g(-1) down to approximately 1.1 nT m(3) g(-1). The loss of magnetization decreases with increasing layer thic kness. The best oxidation protection is found for tetramethoxysilane.