...-saturated water environments. When O₂ was added, coupon surfaces were covered by a more porous corrosion product scale. A final series of tests conducted with the addition of 100 ppm and 2000 ppm O₂ in CO₂ environment with 60% relative humidity (RH) and 80% RH revealed...

... and water-absorption tests were performed under various relative humidity (RH) conditions with solid NH₄Cl salts using a temperature- and humidity-controlled chamber. Eight types of materials commonly used in refineries were examined. UNS K02702 (carbon steel) was corroded above 20 % RH. Its...

...Magnesium Chloride Relative Humidity High-Strength Steel INTRODUCTION The service life of prestressed concrete piles is, in part, dictated by the time required to corrode the steel once chloride ions are at the surface of the steel. ^{1 , 2} Therefore, by increasing the chloride...

...Abstract The control of relative humidity by the use of traditional desiccants such as calcium chloride, silica gel, clay etc., is limited by the saturation point of the material and the effects of cyclic drying at higher temperatures and re-absorption of vapor closer to the saturated state. While...

... relative humidity drying cycles INTRODUCTION Corrosion tests For the corrosion tests flat panels measuring 150 x 100 mm cut out of the industrially coated steel coils were used. Prior to the exposure the panels went through an alkaline cleaning step (Ridoline C72W, pH 13, 60 °C, 30 s) to remove any...

... of accelerated atmospheric corrosion of copper by using a four-point-probe method and the Scanning Electron Microscope (SEM) is described. An aggressive atmosphere containing 100 ppm of H₂S and a relative humidity (RH) above 80% was used to accelerate the corrosion process under a controlled...

... quality proportional to the distance from the seashore as well as to their elevation. In general, the higher carbonation coefficients corresponded to the top sections of the evaluated buildings where the measured relative humidity was lower. However, the concrete cracks due to corrosion were found...

... to the reaction chamber. In both cases, the plumping to reaction chamber was heated to avoid condensation of water. Relative humidity was maintained to better than ± 4%. Salts were deposited utilizing two techniques. Initially salts were deposited by immersing the specimen in NaCl saturated 50% water / 50...

... metals and the measurements are performed by LPR and Tafel slope methods. The performance and applicability of both types of these sensors are considered and explained. atmospheric corrosion thin film sensors outdoor tests linear and Tafel polarization relative humidity atmospheric corrosion monitor...

...galvanic corrosion CFRP Carbon Fiber Reinforced Plastics concrete relative humidity chloride contamination INTRODUCTION Pore water in concrete is alkaline typically with pH between 12.5 and 13.7. ^{1 - 2} This range of pH results in a low corrosion rate for steel because of passivity...

... independent variable. Models were developed to predict the effect of the independent variables on corrosion rate and corrosion potential in each of two environments. concrete mortars reinforcing steel corrosion rate corrosion potential model predictions chloride temperature relative humidity water...

...Abstract This paper discusses the corrosion test results for aluminum to steel lap-shear joints fabricated from three aluminum alloys using four different mechanical fasteners. The evaluations included exposure to alternate immersion (AI) and 100% relative humidity (RH) corrosion tests after...

...Carbon dioxide chlorides temperature relative humidity corrosion problems concrete infrastructure rebar potential polarization resistance carbonation INTRODUCTION In Mexican coasts, as in other countries worldwide, houses and buildings are being constructed in the seashore. The bad...

... and harmful industrial vapors is also stopped. The development of the desiccant D/H machine made this a practical means of preservation not only for the interior of a ship but also for large amounts of other equipment that can be dismounted and stored inside. Experience has shown that if the relative humidity...