Atmospheric Corrosion
Mostrando 1-12 de 21 artigos, teses e dissertações.
-
1. Investigação da corrosão eletrolítica em telhas de aço recobertas com zincalume
RESUMO As telhas de aço usadas em galpões de fazendas expostas às intempéries ficam vulneráveis à degradação. A corrosão surge devido à diferença de potencial elétrico entre a superfície metálica e o meio, levando a um carregamento elétrico dessa superfície. Elas então necessitam da proteção de um recobrimento anticorrosivo, cujo objetivo
Matéria (Rio J.). Publicado em: 20/05/2019
-
2. Corrosión atmosférica acelerada en una fundición gris ASTM A48
ABSTRACT Due to the long times required to investigate atmospheric corrosion resistance of metals, data on the subject is scarce. One of these studies is the one made by Southwell et al., where the effect of corrosion in a cast gray iron during 16 years was studied in various environments. This research shows and discusses the behavior of cast gray iron when
Matéria (Rio J.). Publicado em: 19/07/2018
-
3. Comportamiento bi-modal de una fundición gris y un acero estructural al carbono en corrosión atmosférica marina acelerada
ABSTRACT According to data gathered in the last Metal Foundry Industrial Production Survey [1], approximately 46% of the industrial production of ferrous alloys is gray-iron. In this context the study of the atmospheric corrosion resistance of gray-iron becomes interesting to asset its useful life when subject to weathering conditions. The studies of gray-ir
Matéria (Rio J.). Publicado em: 22/06/2017
-
4. Atmospheric corrosion of Nylon 6,6 in Mauritius
ABSTRACT Plastics are being more and more commonly used for outdoor applications in Mauritius. In this context, the atmospheric corrosion degradation behaviour of nylon 6,6 was observed in the Mauritian atmosphere, having a corrosivity category of C3, according to ISO 9223. The crack width, depth and extent of the cracks formed on the surface were investigat
Matéria (Rio J.). Publicado em: 2016-12
-
5. Investigating atmospheric corrosion behavior of carbon steel in coastal regions of Mauritius using Raman Spectroscopy
Low carbon steel was exposed at two sites in Mauritius, namely Port Louis and Belle Mare. The site at Port Louis is basically an industrial marine one whereas the one at Belle Mare is a purely marine site. Though the corrosion loss trend at both sites follow the power law, the corrosion loss at Port Louis was found to be higher than that at Belle Mare. This
Matéria (Rio J.). Publicado em: 2016-03
-
6. Comportamiento a la corrosión atmosférica marina de aceros autopatinables con estructura ferrítico perlítica y ferrítico martensítica
ABSTRACTThe steel industry constantly faces the challenge of developing new and better steels for diverse needs, on of this necessities is the use of structural steels with higher corrosion resistance to marine atmospheres and improved mechanical properties than those that currently exist. Therefore, it is necessary to systematically research both the influe
Matéria (Rio J.). Publicado em: 2015-09
-
7. Influencia de Ni y Ti en la respuesta a la corrosión marina simulada de un acero autopatinable A242
ABSTRACTThere is a great interest in the steel industry to incorporate new products in the market with better properties of those already in production. Among these properties, corrosion resistance is of great importance for countries with a large marine seacoast, like Chile, where chloride ions from sea spray produce corrosion, leading to irreversible failu
Matéria (Rio J.). Publicado em: 2015-09
-
8. Atmospheric corrosion of galvanized steel and precipitation runoff from zinc in a marine environment
Este estudo focaliza o comportamento do aço galvanizado em um ambiente marinho corrosivo e no processo de escoamento superficial para o mesmo material que ocorrem em Valparaíso, Chile. O potencial de corrosão e a taxa de corrosão avaliados através de perda de massa foram utilizados para determinar os danos da corrosão para o aço galvanizado. As compos
J. Braz. Chem. Soc.. Publicado em: 2013-03
-
9. Corrosion of steel reinforced concrete in the tropical coastal atmosphere of Havana City, Cuba
The influence of chloride deposition rate on concrete using an atmospheric corrosion approach is rarely studied in the literature. Seven exposure sites were selected in Havana City, Cuba, for exposure of reinforced concrete samples. Two significantly different atmospheric corrosivity levels with respect to corrosion of steel reinforced concrete were observed
Quím. Nova. Publicado em: 2013
-
10. Avaliação do efeito de gases poluentes na corrosão metálica: um experimento para o ensino da corrosão
In this work one proposes a didactic experience to simulate atmospheric corrosion of copper and nickel, due to sulfur dioxide presence. This is an opportunity to understand some basic aspects of atmospheric corrosion, by using fundamental concepts in chemistry, reactions of extraction and characterization of pollutants, as well as their participation in corr
Química Nova. Publicado em: 2011
-
11. Estudo da corrosão atmosférica em aço galvanizado empregado em redes de distribuição de energia elétrica / Study of atmospheric corrosion of galvanized steel used in electric distribution networks
Em regiões litorâneas e industriais a atmosfera é considerada agressiva devido à umidade relativa ser elevada, e também devido à presença de íons de cloreto (Cl־) e de sulfato (SO4 -), fazendo com que o processo de corrosão seja acelerado. Isso onera as empresas de distribuição de energia elétrica devido aos custos diretos, pois freqüentem
Publicado em: 2011
-
12. The use of fly-ash and rice-hull-ash in Al/SiCp composites: a comparative study of the corrosion and mechanical behavior
The corrosion characteristics and mechanical behavior of Al/SiCp/spinel composites prepared by reactive infiltration with fly-ash (FA) and rice-hull ash (RHA) -both with recycled aluminum- were investigated. MgAl2O4 is formed in situ during infiltration in the temperature range 1050-1150 °C for 50-70 min in argon atmosphere at a pressure slightly above to t
Matéria (Rio de Janeiro). Publicado em: 2010