%0 Journal Article
%4 dpi.inpe.br/plutao/2012/11.28.17.07.33
%2 dpi.inpe.br/plutao/2012/11.28.17.07.34
%@doi 10.4028/www.scientific.net/MSF.727-728.287
%@issn 0255-5476
%F lattes: 7375576563586744 2 OliveiraFátFerUed:2012:PhAnTi
%T Physicochemical Analysis of Ti-Si-B Powder Alloys
%D 2012
%A Oliveira, Guilherme,
%A Fátima Magalhães Mariano, Samantha,
%A Fernandes, Bruno Bacci,
%A Ueda, Mario,
%A Ramos, A. S,
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation ETEP Faculdades, Av. Barão do Rio Branco, CP 116 12600-970 São José dos Campos SP, Brazil
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade Estadual Paulista Julio de Mesquita Filho, FEG/UNESP, Av. Ariberto Pereira da Cunha 333, 12516-410 Guaratinguetá SP, Brazil
%@electronicmailaddress
%@electronicmailaddress samantha.magalhaes@plasma.inpe.br
%B Materials Science Forum. Advanced Powder Technology VIII Book Series
%V 727-728
%P 287-292
%K Titanium alloys, high energy ball milling, sintering.
%X Titanium alloys of Ti-Si-B system were manufactured by blended elemental powder method using Ti, Si and B powders as starting materials. It was found that uniaxial and isostatic pressing followed by hot pressing at around 1000°C, for 20 minutes, provided good densification of such alloys. The physicochemical studies were performed by means of scanning electron microscopy, X-ray diffraction, atomic force microscopy and microindentation/wear tests. The investigations revealed a multiphase microstructure formed mainly by α-titanium, Ti 6Si 2B, Ti 5Si 3, TiB and Ti 3Si phases. The phase transformations after pressureless sintering at 1200°C was also studied by X-ray diffraction for the Ti-18Si-6B composition. As stated in some other researches, these intermetallics in the α-titanium matrix provide high wear resistance and hardness, with the best wear rate of 0.2 mm 3/N.m and the highest hardness of around 1300 HV.
%@language en