EFFECT OF THE MORPHOLOGY OF NANO-MAGNETIC MATERIALS IN CONSOLIDATION OF EGYPTIAN COPTIC FRESCO PAINTING

Abstract

The magnetic nano particles (MNP’s) presented in cobalt ferrite CoFe2O3 and magnetic nano wires (MNW’s)
presented in spinel nickel zinc ferrite magnetic nanowires NiZnFe2O3 are popularly used in medicine field
and in electronics. In present work they have been used in conservation field for consolidation of 2 models
(one for application of MNP and other for MNW ) of an Egyptian fresco painting (3rd to 7th c. AD) kept in
Coptic museum. They are filling the gaps inside the structure and improve the way of penetration of the
magnetic nano materials through surface. The two treated models were studied by Fourier transform
infrared( FTIR), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and Spectrophotometer to
determine the visual properties, and morphological and physical properties of the treated two models. The
effect of different morphology of magnetic nano wires and magnetic nano particles on the mechanical
characteristics of treated models using means of mechanical tests was evaluated. Both the two models
proved that there is an improvement in mechanical properties occurring in both, but the magnetic nanowires
act as nano wire in combaining the interior structure, thus, the model treated with MNW exhibited high
resistanceto in bursting and hardness tests.