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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2006
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| Online Access: | https://www.redalyc.org/articulo.oa?id=46436308 |
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Table of Contents:
- Dynamics of Defects and Surface Structure Formation in Reticulated Vitreous Carbon E. S. Goncalves M. C. Rezende N. G. Ferreira Física, Astronomía y Matemáticas Defects Vitreous carbon Surface Structure Morphological and microstructure properties of reticulated vitreous carbon (RVC) were analyzed by scanningelectron microscopy (SEM), micro-Raman spectroscopy and x-ray diffraction (XRD) techniques as a functionof heat treatment temperature (HTT). Samples produced in the HTT range of 1000 to 2400 K have demonstrateda strong dependence of HTT in their structural order mainly attributed to the presence of hydrogen and oxygen(heteroatoms), originated from precursor. In this range, the material is changed from pyropolymer to carbon.The polyfurfuryl alcohol precursor has furanic groups and its cure originates methylenical bonds and sulphuratoms. At HTT higher than 1300 K, these atoms are gradually liberated from the material generating a discretestructure ordering. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436308 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.36