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Protection mechanisms of blast furnace hearth linings achieved through titanium...
Justus, S. M.; Cava, S. S.; Soledade, L. E. Bastos; Vernilli, F.; Castelló, J. Carda; Paskocimas, C. A. [UNESP]; Silva, S. N.; Varela, J. A.; Longo, E.Made available in DSpace on 2022-04-28T20:16:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-12-01; The protection mechanisms of refractory linings both at the slag and pig-iron levels associated with conventional techniques of titanium addition to the blast furnace burden were investigated. The results were derived from a post mortem study on CSN's Blast Furnaces 2 and 3, as well as laboratory simula...
Improvement of transport properties of Lix(Ni 0.8Co0.2)O2 oxide in the formatio...
Mosqueda, Y.; Pérez-Cappe, E.; Rodriguez, G.; Varela, J. A.; Souza, E.Made available in DSpace on 2022-04-28T18:55:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-11-07; Several authors have proposed that lithium diffusivity is the restrictive step in the insertion and extraction lithium processes in Li 1-x[Ni(y-x)Nix]Co1-yO2 cathodic oxides. In this article we calculated the lithium diffusion coefficient and dc conductivity for Lix(Ni0.8Co0.2)O 2 and Lix(Ni0.8Co0.2)O 2...
Sintering of undoped SnO2
Leite, E. R.; Cerri, J. A.; Longo, E.; Varela, J. A.Made available in DSpace on 2021-07-14T10:25:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-04. Added 1 bitstream(s) on 2021-07-14T11:30:00Z : No. of bitstreams: 1 S0366-69132003000200005.pdf: 376715 bytes, checksum: a232b1a0af71bdd5abc8dbd7b13fec7e (MD5); A sinterização de SnO2 puro foi estudado por taxa constante de aquecimento e por sinterização isotérmica. O estudo de taxa constante de aqueciment...
Funcional lead-free composite
Teixeira, G. F. [UNESP]; De Oliveira, J. A.M.; Zaghete, M. A.; Longo, E.; Varela, J. A.Made available in DSpace on 2018-12-11T16:37:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-01-01; In the present work we report the properties of NaNbO3 ceramic particles obtained by microwave-assisted hydrothermal method and its use in composites with PVDF polymer. Results indicated that Na2Nb 2O6.H2O particles can be used as precursor to fabricate NaNbO3 fibers-like particles. Photoluminescence sp...
Hydrothermally assisted synthesis of YMnO3
Branković, Z.; Branković, G.; Počuča-Nešić, M.; Marinković Stanojević, Z.; Žunić, M.; Luković Golić, D.; Tararam, R.; Cilense, M.; Zaghete, M. A.Made available in DSpace on 2018-12-11T16:38:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-05-27; In this work single phase hexagonal YMnO3 powders were prepared starting from Y(CH3COO)3·xH2O, Mn(CH3COO)2·4H2O, KMnO4 and KOH using methods of conventional (280°C for 6h) or microwave assisted hydrothermal synthesis (200°C for 2h) followed by calcination at 1200°C for 2h. According to FESEM analysis th...
Red shift and higher photoluminescence emission of CCTO thin films undergoing p...
Varela, J. A.
Structural refinement and photoluminescence properties of irregular cube-like (...
Varela, J. A.
'beta'-ZnMo'O IND. 4' microcrystals synthesized by the surfactant-assisted hydr...
Varela, J. A.
Disorder-dependent photoluminescence in 'Ba IND. 0.8''Ca IND. 0.2'Ti'O IND. 3' ...
Varela, J. A.
Photoluminescence in disordered 'Ba IND.0.8''Ca IND.0.2'Ti'O IND.3' at room tem...
Varela, J. A.