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Desempenho à corrosão de corpos de prova de aço carbono revestidos com cromo trivalente e com posterior aplicação de um filme de passivação de cromo trivalente eletrolítico
(2021-06-29)
Currently, metallic electrodeposition is one of the most used ways to obtain protective barriers against corrosion media. For a long time, processes based on hexavalent chromium were used as a protective coating, but because ...
Avaliação das regiões de borda superficial após processos de cortes térmicos em um aço carbono com e sem pré-tratamento nanocerâmico e revestimento e-coat acrílico
(2021-06-29)
Thermal cuts are widely used in industries in order to obtain manufactured metal parts with good surface finish and preservation of their metallurgical properties, for use in subsequent production processes. Thus, many ...
Avaliação do efeito da adição de compostos orgânicos e inorgânicos como aditivos retardantes de chama não halogenados na flamabilidade do polipropileno
(2021-11-29)
Fires cause damage to life and financial losses. In view of the high flammability of polymeric materials and their growing use by industry, further studies to reduce their flammability are required. This work seeks to ...
Quantificação do ácido fólico em farinha de trigo adotando o método de cromatografia líquida de alta eficiência com detector UV: validação do método
(2021-12-16)
The lack of vitamin B9 in daily diet is mainly related to abnormalities in the fetus development and heart and bone marrow diseases. In order to avoid folic acid deficiency, some countries adopted the mandatory fortification ...
Quantificação da migração específica de contaminantes metálicos provenientes de utensílios revestidos com politetrafluoretileno em simulante ácido de alimentos
(2021-11-30)
The growing need of new materials and coatings in the industrial foodstuff segment made the use of polytetrafluoroethylene more powerful. Due to the auto-lubricating and anti-sticking characteristics at an affordable cost, ...
Análise numérico-experimental de corrosão em chapas de alumínio para validação de método computacional
(2021-12-10)
The study of corrosion, its forms and the mechanisms by which it occurs, is important for the most varied sectors of the industry, being directly related to the environment and the exposure conditions in which the material ...
Efeito de pré-tratamento hidrotérmico na hidrólise enzimática de bagaço de cana-de-açúcar
(2021-11-08)
The lignocellulosic materials as a source of renewable energy are an alternative to increase the energy matrix and reduce the environmental impacts caused by fossil fuels. In Brazil, the residue of the processing of sugar ...
Avaliação do desempenho propulsivo utilizando dois agentes oxidantes na forma de propelente sólido em minifoguetes
(2021-12-14)
The mini rockets use a mixture of potassium nitrate and sucrose known as propellant grain, which, when ignited, produces an energy burn that has the function of moving the vehicle upwards through the principle of action ...
Avaliação de parâmetros que influenciam na leitura precisa de sensores magnetoelásticos para a aplicação em biossensores
(2021-12-01)
Magnetoelastic material sensors are rising due to their applicability, from the measurement of chemical and physical quantities to pathogen detection, beyond the possibility of wireless instrumentation. The working principle ...
Avaliação da despolimerização do poliestireno expandido por micro-ondas utilizando óxido de grafeno e carvão ativado
(2021-07-30)
Polymers are increasingly present in everyday life to replace other materials. Because they are cheap and have attractive mechanical properties, they were and still are produced on a large scale and, consequently, their ...