penetraÇÃo e distribuiÇÃo do consolidante paraloid® b-72 em cerÂmica branca estudada por tomografia com nÊutrons
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Abstract
The neutron tomography technique was employed to study the penetration and distribution of the consolidant Paraloid® B-72 in ceramic. This study was carried out in white contemporary ceramic vessels which were maintained in two distinct and controlled air humidity conditions, 35% and 90%, before the consolidant application (brushing technique). The results showed that the treatment with Paraloid® B-72 is more effective when applied in the drier vessel. The depth of penetration for the vessel at 35%, reaches (3.3 ± 0.1) mm in the wall, while for the one at 90%, (1.9 ± 0.1) mm, and the maximal concentration impregnation was 26% higher. The 3D images allowed a visualization of the impregnation process, that is, its distribution, failures, homogeneity, boundary between materials. These results demonstrated the feasibility of the neutron tomography technique and of the equipment of IPEN-CNEN/SP, in support the expert work in the field of preservation and restoration of ceramic objects.
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pereiraqumicapenetrao
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| Authors | ;Marco A. Stanojev Pereira;Reynaldo Pugliesi;Marcos L. G. Andrade;Maria I. Prudêncio |
| Journal | greece and rome |
| Year | Year not found |
| DOI |
10.21577/0100-4042.20170055
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