Aisi 304l Steel
Mostrando 13-24 de 29 artigos, teses e dissertações.
-
13. "Resistência à Corrosão de Aços Inoxidáveis em Solução Sintética de Condensado de Álcool Combustível / "Resistência à Corrosão de Aços Inoxidáveis em Solução Sintética de Condensado de Álcool Combustível
Nowadays a great effort had been directed to research work in order to attend the environmental protection agencies demands for minimizing the levels of gases emission pollutants. The consumers requirements for more economic and durable vehicles had motivated also the researchers to look for more corrosion resistance materials in order to substitute the trad
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2010
-
14. Biofilm formation by Listeria monocytogenes on stainless steel surface and biotransfer potential
An experimental model was proposed to study biofilm formation by Listeria monocytogenes ATCC 19117 on AISI 304 (#4) stainless steel surface and biotransfer potential during this process. In this model, biofilm formation was conducted on the surface of stainless steel coupons, set on a stainless steel base with 4 divisions, each one supporting 21 coupons. Try
Brazilian Journal of Microbiology. Publicado em: 2010-03
-
15. Characteristics of austenitic stainless steel nitrided in a hybrid glow discharge plasma
A nitriding process based on two distinct nitrogen glow discharge modes, with sample temperatures ranging from 380 0C to 480 0C, was employed to treat the surface of austenitic stainless steel (SS 304). The temperature is controlled exclusively by switching the operation conditions of the discharges. First mode of operation is the conventional one, named cat
Brazilian Journal of Physics. Publicado em: 2009-09
-
16. Influence of high frequency and moderate energy pulses on DLC deposition onto metallic substrates by magnetron sputtering technique
The deposition of Diamond-like carbon (DLC) films brings excellent mechanical, chemical, optical and electronic properties to a large range of materials. However, a problem to be overcome is its poor adhesion on metallic substrates. Usually, a silicon layer must be deposited on the surface of metals previous to DLC film deposition. In fact, in our experiment
Brazilian Journal of Physics. Publicado em: 2009-06
-
17. Estudos comparativos de filmes interferentes crescidos sobre o aço AISI 304 em H2SO4 na presença e ausência de CrO3 / Comparative studies of interference films grown on 304- stainless steel in H2SO4 in the presence and absence of CrO3
No presente trabalho, filmes de óxidos coloridos foram crescidos sobre amostras de aço inoxidável pelo método de varredura triangular de corrente (VTC) em H2SO4 5 mol L-1 (50 oC) e H2SO4 5 mol L-1 + CrO3 2,5 mol L-1 (25 oC). A suscetibilidade à corrosão por pites das amostras de aço recobertas com tais filmes foi avaliada por curvas de polarização e
Publicado em: 2009
-
18. Biofilme de Enterococcus faecium em superficie de aço inoxidável : caracterização tecnologica, modelagem e controle por agentes sanitizantes / Biofilm of Enterococcus faecium in surface of stainless steel : modeling and control by sanitizers agents
Dentre os microrganismos que apresentam capacidade de aderir e formar biofilmes em superfícies de processamento de alimentos, como equipamentos e utensílios, estão às bactérias do gênero Enterococcus, presentes em alimentos como leite e derivados. Sua presença em queijos tem sido muito estudada por sua capacidade de conferir características tecnológ
Publicado em: 2009
-
19. FormaÃÃo de biofilme em aÃo inoxidÃvel por Aeromonas hydrophila e Staphylococcus aureus sob diferentes condiÃÃes de cultivo / Biofilm formation by Aeromonas hydrophila and Staphylococcus aureus on stainless steel AISI 304 in different conditions of cultivation
The microbial biofilm formation in surfaces used in food processing, like stainless steel, has been the focus in several researches in function of the injuries of its occurrence. These communities can act as constant point of contamination and cause other losses, as surface corrosion. In this context, Staphylococcus aureus and Aeromonas hydrophila are consid
Publicado em: 2008
-
20. Sanificantes quÃmicos no controle de biofilmes formadas por duas espÃcies de Pseudomonas em superfÃcie de aÃo inoxidÃvel. / Chemical sanitizers in the control of biofilms formed by two species of Pseudomonas on surface of stainless steel
A maioria das bactÃrias, em seu hÃbitat, vive em comunidades de diferentes graus de complexidade, geralmente compondo o biofilme. Uma vez instalado o biofilme, Ã resistÃncia desses organismos sÃsseis aumenta, dificultando, assim, a aÃÃo dos sanificantes. Objetivou-se, com este estudo, avaliar a capacidade de adesÃo e formaÃÃo de biofilme por Pseudo
Publicado em: 2008
-
21. Use of factorial-design on the study of the electrochemical Removal of Pb(II) ions from simulated wastewaters / Utilização de planejamento fatorial no estudo da remoção eletroquímica de íons Pb(II) de fluentes simulados
In this work, the removal of Pb(II) ions from simulated wastewaters, using a flow-through cell under galvanostatic condition was studied. With help of factorial design and response surface methodology, the variables current, electrolyte flow rate and the specific surface area of the three-dimensional cathode used (stainless-steel wool AISI 304) were simultan
Publicado em: 2007
-
22. Effect of rare earth oxide additions on oxidation behavior of AISI 304L stainless steel
AISI 304L stainless steel powder compacts containing 2 vol% high purity rare earth oxides were prepared by mixing the different powders in a vibratory mill followed by pressing. The compacts thus obtained were sintered in a vacuum furnace and isothermal oxidation measurements were carried out in a muffle furnace, in air, up to 200 hours at 900 °C. The oxidi
Materials Research. Publicado em: 2006-12
-
23. Estudo dos fenômenos que ocorrem durante o recozimento dos aços inoxidáveis austeníticos 304L e 316L deformados em várias temperaturas. / Study of the phenomena that occur during the annealing of worked AISI 304L and 316L austenitic stainless steels deformed at various temperatures.
Hot rolled AISI 304L and 316L austenitic stainless steel sheets, 6mm thick, presented recrystallized equiaxial grains with austenite and islands of delta ferrite, in larger quantities mainly in the center of both steel sheets. The austenite had a weak texture, with a gradient through the thickness. The solution annealing eliminated delta ferrite, however it
Publicado em: 2006
-
24. "Influence of the stainless steel composition (austenitcs, martensitics and ferritcs) in the corrosion protection by polyaniline films" / "Influência da microestrutura dos aços inoxidáveis (austeníticos, ferríticos e martensíticos) na proteção contra a corrosão por filmes de polianilina"
Neste trabalho foram obtidos filmes de polianilina (PAni) por eletropolimerização (voltametria cíclica) sobre aços inoxidáveis austenítico (AISI 304), ferrítico (AISI 430) e martensítico (AISI 420), em meio de ácido oxálico. Os filmes de PAni foram preparados a partir de solução aquosa de ácido oxálico 0,3 mol L-1 contendo 0,1 mol L-1 de anilin
Publicado em: 2006