dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Univ Paris 11 | |
dc.date.accessioned | 2014-05-20T15:25:49Z | |
dc.date.accessioned | 2022-10-05T16:35:13Z | |
dc.date.available | 2014-05-20T15:25:49Z | |
dc.date.available | 2022-10-05T16:35:13Z | |
dc.date.created | 2014-05-20T15:25:49Z | |
dc.date.issued | 2004-10-01 | |
dc.identifier | Journal of Sol-gel Science and Technology. Dordrecht: Springer, v. 32, n. 1-3, p. 91-97, 2004. | |
dc.identifier | 0928-0707 | |
dc.identifier | http://hdl.handle.net/11449/36160 | |
dc.identifier | 10.1007/s10971-004-5771-y | |
dc.identifier | WOS:000228103300016 | |
dc.identifier | 9971202585286967 | |
dc.identifier | 5584298681870865 | |
dc.identifier | 0000-0002-8356-8093 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3907944 | |
dc.description.abstract | This paper describes the effect of sulfate, phosphate and nitrate complexing ligands on the structural features of amorphous xerogels and on the crystallization of metastable zirconia phases during the xerogel-ceramic conversion. Powdered samples were prepared by a sol-gel route using zirconyl chloride precursors chemically modified by complexing ligands. The structural evolution of ZrO2 phases as function of firing temperature was analyzed by XRPD, EXAFS and P-13 NMR/MAS. The experimental results show the formation of metastable t-ZrO2 during the low firing temperature of xerogels modified by sulfate or phosphate groups. The martensitic tetragonal-monoclinic transformation occurs during desorption of sulfate groups. The largest temperature interval of stability of metastable tetragonal zirconia was observed for phosphate-modified xerogels. | |
dc.language | eng | |
dc.publisher | Springer | |
dc.relation | Journal of Sol-Gel Science and Technology | |
dc.relation | 1.745 | |
dc.relation | 0,477 | |
dc.rights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | sol-gel process | |
dc.subject | zirconia tetragonal phase | |
dc.title | Structural features of phosphate and sulfate modified zirconia prepared by sol-gel route | |
dc.type | Artigo | |