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Design of high entropy alloys for hydrogen storage: study of the Mg-V-Al-Cr-Ni, Mg-Al-Ti-Mn-Nb and Ti-V-Nb-Cr systems
(Universidade Federal de São Carlos, 2021-05-21)
The advent of high entropy alloys (HEA) has brought new opportunities and challenges to metallurgy. Due to extensive compositional field of HEAs, the possibility of controlling properties in a composition-driven approach ...
Aspectos termodinâmicos e cinéticos do uso de plugues porosos para a remoção de partículas cerâmicas por bolhas inteligentes
(Universidade Federal de São Carlos, 2021-04-19)
Non-metallic inclusions can spoil the mechanical properties of the steel depending on their composition, geometry, size and distribution. In this context, “inclusion engineering” is a rising area in steelmaking industry ...
Obtenção do sistema nanoestruturado livre de chumbo (Na0,5Bi0,5)0,94Ba0,06TiO3 (NBT-BT6) via rotas químicas
(Universidade Federal de São Carlos, 2020-09-16)
Perovskites based on sodium bismuth titanate (Na0.5Bi0.5TiO3) are
promising candidates for replacing some ceramic materials based on lead due
to piezoelectric properties. The solid solution 0.94(Na0.5Bi0.5)TiO3-0.06BaT ...
Development of ionic conductive cellulose mat by solution blow spinning and laser-induced graphene from pineapple nanocellulose for use in flexible electronic devices
(Universidade Federal de São Carlos, 2021-02-26)
In the face of environmental issues and aiming at electronic devices of
rapid production at low cost, this doctoral thesis proposed two new and
innovative approaches to obtain substrates, dielectrics, and electrodes from ...
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction
(Universidade Federal de São Carlos, 2020-12-02)
Fuel cell is an electrochemical energy conversion system, that holds the
promise for clean and sustainable energy source. During the operation, this
device generates electricity direct from electrochemical reactions ...
Influência da adição de cério na resistência à corrosão e efeito de memória de forma em ligas Fe-Mn-Si-Cr-Ni-(Ce)
(Universidade Federal de São Carlos, 2020-09-03)
The interest in scientific and technological development of Fe-Mn-Si-Cr-Ni shape memory alloys is increasing in the last years. The improvement of key properties of theses alloys should enable its use in different applications, ...
Study of bioactivity, corrosion resistance and fatigue behavior of Ti-12Mo-6Zr-2Fe alloy after different surface treatments
(Universidade Federal de São Carlos, 2020-11-19)
Demand for new implants with improved bioactivity, corrosion resistance, and optimal mechanical properties has been increasing considerably. In this sense, different surface treatments are applied in titanium alloys to ...
Mineração de textos de patentes para monitoramento tecnológico, identificação de aplicações e seleção de materiais: estudo de caso em desenvolvimentos de aços
(Universidade Federal de São Carlos, 2020-11-26)
The growing number of options in materials leads to increasing complexity of the process to select the most suitable to perform a function in a product or to choose a competitive application for a newly developed material. ...
Crack network monitoring upon curing and drying of high-alumina MgO-containing refractory castable via digital image correlation
(Universidade Federal de São Carlos, 2020-12-23)
MgO particles are added to high-alumina refractory castable formulations to
form spinel at high temperatures. However, these particles react with water forming brucite, which causes heterogeneous expansions in the material ...
Equilíbrio de fases e propriedades mecânicas da liga de elemento multiprincipal Cr40Co40Ni20
(Universidade Federal de São Carlos, 2021-02-19)
In the pursuit for materials with improved performance, multi-principal element alloys (MPEAs) attract the interest of the scientific community, due to their large composition space. Some Cr-Co-Ni alloys stand out with ...