@Article{FernandesNetRamMelHen:2014:StTiAl,
author = "Fernandes, Bruno Bacci and Neto, Carlos de Moura and Ramos, Alfeu
Saraiva and Melo, Francisco Crist{\'o}v{\~a}o Louren{\c{c}}o de
and Henriques, Vinicius Andre Rodrigues",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and {Universidade
Federal de Alfenas (UNIFAL)} and {Instituto de Aeron{\'a}utica e
Espa{\c{c}}o} and {Instituto de Aeron{\'a}utica e
Espa{\c{c}}o}",
title = "Study of Ti-7.5Si-22.5B Alloys Produced by Powder Metallurgy",
journal = "Materials Research",
year = "2014",
volume = "17",
number = "3",
pages = "557--564",
month = "May-June",
keywords = "powder metallurgy, titanium alloys, vickers hardness.",
abstract = "Refractory alloys with silicides and borides have been used in
high temperature applications because their elevated melting
point, good oxidation resistance and high strength-to-weight
ratio. The present study approaches the preparation of
Ti-7.5Si-22.5B (at.-\%) alloys through high-energy ball milling
and sintering. The powders and compacts obtained in these
processes were characterized by X-ray diffraction (XRD), scanning
electron microscopy (SEM), density measurements, chemical analyses
and Vickers hardness. It was verified that silicon and boron
powders are dissolved in the titanium during milling with an iron
contamination up to 6.0 at.-\%. Furthermore, the use of short
milling times and alcohol during the final stages of milling
increases the powder yield. Such increasing was obtained even with
a high rotary speed (300 rpm), which generally creates higher
temperatures and consequently more sticking. After sintering of
the as-milled powders, it was indentified mainly the
Ti+Ti6Si2B+TiB+Ti5Si3 phases in the Ti-7.5Si-22.5B sintered
alloys, which presented hardness values up to 800 HV. The
materials produced by the present work can be employed in coating
research as sputtering targets.",
doi = "10.1590/S1516-14392014005000076",
url = "http://dx.doi.org/10.1590/S1516-14392014005000076",
issn = "1516-1439",
label = "isi 2014-11 FernandesNetRamLouRod:2014:StTiAl",
language = "en",
targetfile = "Fernandes_study.pdf",
urlaccessdate = "02 maio 2024"
}