@Article{GondimMaeRamRodRam:2015:SyTaCo,
author = "Gondim, Maria de F{\'a}tima and Maestrelli, Sylma Carvalho and
Ramos, Erika Coaglia Trindade and Rodrigues, Jos{\'e} Augusto
Jorge and Ramos, Alfeu Saraiva",
affiliation = "{Universidade Federal de Alfenas} and {Universidade Federal de
Alfenaa} and {Universidade Federal de Alfenas} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal
de Alfenas}",
title = "Synthesis of TaAlO4 compound and Al2O3–TaAlO4 composite ceramic by
mechanical alloying and their sintering",
journal = "Ceramics International",
year = "2015",
volume = "41",
number = "2",
pages = "2260--2265",
month = "Mar.",
keywords = "B. composite, D. transition metal oxides, powder processing solid
state, catalysts.",
abstract = "This work discusses on the synthesis of TaAlO4 compound and
Al2O3TaAlO4 composite ceramic by mechanical alloying and
subsequent sintering from the Al2O350 mol%Ta2O5 and Al2O35
mol%Ta2O5 powder mixtures, respectively. The samples were milled,
compacted and sintered at 1200 °C for 240 min in order to obtain
the equilibrium phases. The as-milled powders and sintered samples
were characterized by X-ray diffraction, and BET analysis,
He-picnometry, and DSC/TG analyses. Only peaks of \α-Al2O3
and Ta2O5 were identified in XRD patterns of as-milled Al2O35
mol%Ta2O5 and Al2O350 mol%Ta2O5 powders. Results have indicated
that Al ions were preferentially dissolved into the Ta2O5 lattice
in order to form metastable structures. The average density of the
Al2O35 mol%Ta2O5 and Al2O350 mol%Ta2O5 powder particles was
reduced during ball milling while that their surface areas were
continuously increased during ball milling, respectively. For the
Al2O350 mol%Ta2O5 powder mixture, the surface area was reduced
during the initial milling time. After sintering at 1200 °C for
240 min, the TaAlO4 compound and Al2O3TaAlO4 composite were formed
from the mechanically alloyed Al2O35 mol%Ta2O5 and Al2O350
mol%Ta2O5 samples, respectively.",
doi = "10.1016/j.ceramint.2014.10.029",
url = "http://dx.doi.org/10.1016/j.ceramint.2014.10.029",
issn = "0272-8842",
language = "en",
targetfile = "Synthesis of talo4.pdf",
urlaccessdate = "27 abr. 2024"
}