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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 ...
Refill friction stir spot welding of different thickness Al-Cu alloy using a tool with reduced dimensions for aerospace application
(Universidade Federal de São Carlos, 2020-11-12)
Refill Friction Stir Spot Welding has grown as an interesting alternative to conventional joining techniques in recent years, especially when it comes to high strength aluminum alloys. Although current results show promise, ...
Relaxação estrutural de vidros metassilicato de chumbo e dissilicato de lítio
(Universidade Federal de São Carlos, 2021-02-25)
Glasses are thermodynamically unstable and spontaneously relax towards the supercooled liquid state. The relaxation time varies from seconds at temperatures above the glass transition to geological times at room temperature. ...
Estudo de massas de porcelanato esmaltado contendo filito como fundente
(Universidade Federal de São Carlos, 2020-12-17)
The production of ceramic tiles is growing worldwide and Brazil is the third-largest producer in the world. Porcelain tiles represent a significant fraction of this production and the trend is for significant growth in the ...
Resistência ao escorregamento de revestimentos cerâmicos: avaliação por diferentes métodos, correlações com a topografia e o desgaste da superfície durante o uso
(Universidade Federal de São Carlos, 2020-09-17)
The development of ceramic floors for safe use in environments associated with slip and fall accident risks, which are even higher in the presence of water and contaminants, deals with the following difficulties: 1) although ...