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Mostrando ítems 11-20 de 41
Friction surfacing of aluminum alloy 5083-H112 over AA 2024-T3
(Universidade Federal de São Carlos, 2018-03-23)
Friction surfacing (FS) is an advanced solid-state process in surface modification with increasing applications in reclaiming worn parts, hardfacing and corrosion protection. It is considered a derivation of the friction ...
Cerâmica de titanato de lantânio e lítio: sistematização de obtenção e crescimento de grão orientado induzido via cristais de aluminato de lantânio
(Universidade Federal de São Carlos, 2018-09-10)
The research based on ionic conductive ceramics is part of the scientific innovation efforts applied to the industry of solid state batteries and sensors, which are fundamental for the development of new, more efficient ...
Pesquisa em consolidação do fechamento de vazios internos em produtos forjados no aço W.Nr. 1.2738 modificado
(Universidade Federal de São Carlos, 2018-11-23)
During steel ingot solidification, internal voids are expected to be formed in its interior. Such voids, if they stay in the final product after the forging step, will hurt the performance and properties of the final ...
Otimização do processo de soldagem robotizada tandem GMAW do aço ASTM A572 G50
(Universidade Federal de São Carlos, 2018-10-31)
The tandem welding process employs double wire feed in a single torch,
providing increased deposition rate and consequent reduction in process times.
However, the process complexity increases because the correct combination ...
Sinterabilidade, desenvolvimento microestrutural e caracterização elétrica do BaCe0,9Y0,1O3-ẟ nanométrico obtido por mistura de óxidos
(Universidade Federal de São Carlos, 2018-11-28)
In this thesis, we investigated the microstructural development of BaCe0,9Y0,1O3-ẟ starting from aggregate-free submicrometric and nanometric powders. The differential of these powders is that synthesis occurred via ...
Nucleação transiente e estacionária em dissilicato de lítio
(Universidade Federal de São Carlos, 2018-05-29)
Glasses and supercooled liquids tend to crystallize below the melting temperature. Crystallization is a phase transformation where the atomic structure ceases to be non-crystalline and becomes periodic. The focus of this ...
Estudo da resistência à corrosão em ligas de memória de forma NiTiNb com diferentes teores de Nb
(Universidade Federal de São Carlos, 2018-11-26)
In this work, the corrosion behavior of NiTiNb shape memory alloys (SMA) in aqueous medium containing chloride ions was characterized. The study was performed in alloys of six different compositions, which were melted in ...
Concretos refratários fosfatados para refino de petróleo: caracterização, propriedades e adequação ao uso
(Universidade Federal de São Carlos, 2018-09-26)
The increasing demand for petroleum experienced in the last decades has pushed the barrel price to a level never seen before, stimulating a race for rising production volumes and taking us to even deeper waters. On a similar ...
Estudo da viabilidade técnica do reaproveitamento de altos teores de fibras de poli(para-aramida) como reforço mecânico em poliamida 66
(Universidade Federal de São Carlos, 2018-10-26)
Responsible for an annual demand higher than 70 millions of tons, the poly(para- aramide) fibers are being widely used in the safety, automobilist, aeronautic, and petroleum industries, due to their attractive mechanical, ...
Graftização de polipropileno-G-anidrido maleico sobre microesferas ocas de vidro por extrusão reativa
(Universidade Federal de São Carlos, 2018-08-24)
Using a maleic grafted polypropylene copolymer as a compatibilizing agent on a composite with hollow glass microspheres HGM is one way to reduce the mechanical properties decrement associated to the round, hollow, hydrophilic ...