...No significant galvanic corrosion was observed between SD255 and NAB. Similarly, no significant galvanic corrosion was observed between 316L SS and NAB. As expected, the galvanic current density was higher at 24°C, indicating that sacrificial anodes such as aluminum are consumed more rapidly...

...Abstract The use of aluminum alloys for industrial and HVAC applications has increased due to their unique physical properties and perceived general resistance to corrosion. The most attractive of these properties is their low density and high mechanical strength. When in contact with water...

...In contrast, there are a number of non-contact methods [ 6 – 9 ] of monitoring the current density of the aluminum oxide films. The noncontact methods are solely dependent on light as a quantum tool to traverse the information of the anodized surface of aluminum samples in aqueous solutions...

... that at short exposure times in less severe environments, the overwhelming effect of the exposed metal reaction to environment at the scribe is different from the processes that are taking place away from the scribe under undamaged coating. aluminum AA6111 coating pretreatment corrosion Electrochemical...

...Table 1 Composition limits for some wrought and cast aluminum alloys typically used for molds. Element 2024 6061 7022 7075 319 356 413 535 Silicon 0.5 max. 0.4 - 0.8 0.50 max. 0.40 max. 5.5 - 6.5 6.5 - 7.5 11.0 - 13.0 0.1 max. Iron 0.5 max. 0.7 max. 0.50 max 0.50...

... ± 0.3 5.8 ± 0.1 4.5 ± 0.2 Abstract The newest generation of aluminum, high strength steel and magnesium alloys show significant potential for light weight applications in aerospace, transportation and consumer electronic applications. However, these alloys suffer from significant corrosion...

...Zero Resistance Ammeter Measurement Systems Abstract Environment-assisted cracking (EAC) of aluminum alloys in corrosive atmospheres is a significant maintenance and safety issue for aerospace and naval structures. EAC is influenced by the interaction of stress, environment, and alloy...

...) with or without salt activator, etc. However, the protection capacity lifetime of zinc alloys as used has been questioned based both on laboratory and on field application studies. Aluminum alloys have also been evaluated, showing sometimes better results as anode materials than zinc alloys. However, both zinc...

... of different coatings and simulated exposure conditions (i.e., salt spray, extreme temperature, etc.). Thermal Spray Aluminum Sealants INTRODUCTION Non-skid thermal spray coating applications require a combination of material and survivability factors that make them an ideal fit for multifunctional coatings...

... in press-hardening, the sealing of anodizing layers on aluminum substrates, the production of nanofibre-enhanced oxide layers under ultrasound conditions, as well as self-healing oxide layers on magnesium alloys. Nanoparticles nanocapsules nanotubes oxide layers high-strength steel aluminum magnesium...

...intergranular pitting corrosion heat treatment aluminum RESULTS AND DISCUSSION The results of corrosion and hardness testing are summarized in Table 2 . The T4 treated material showed a low maximum penetration depth of only 130 μm in the initial condition and with 100 HV0.3 the lowest...

...Abstract Aluminum is an attractive metal for use as an anode in the cathodic protection of steels in seawater due to its low cost and high current capacity. Zinc is often used for its ability to readily corrode, but it has a low current capacity and it operates at very negative voltages, leading...

... Secondary emulsifiers 6.7 3 Potassium hydroxide 0.6 2.16 Imidazoline 0.5 Amide 5 Polycarboxylic acid 1.00 Ethoxylated alcohol 0.50 Water 0.5 16 60.65 Aluminum staining was assessed using an in-house method. Aluminum test coupons were purchased from Metaspec, LLC...

...Abstract In this work 57 anodized aluminum bath systems were evaluated, based on different organic acid mixtures (oxalic/O and citric/C), inorganic (sulfuric/S, phosphoric/P and boric/B) and additives with natural substances (Dividivi/A Tannin/B, Aloe Vera/C, Neem/D and Mango leaves/E). Different...

... on cathodically protected BS EN 10027-1 S355 J2G4 steel in boiling synthetic seawater. Steel specimens were arc sprayed with commercially pure aluminum (99.5%) and a ≈4% holiday was drilled into the coating to expose the underlying steel. The specimens were then immersed in boiling (101±1°C) ASTM D1141 seawater...

... and temperature transients. For the current research, the flow and temperature conditions are assessed and the release rates of aluminum are compared to the industry standard. Electrochemical measurements are used since the corrosion rates of the materials in the reactor containment are essential to understanding...

... O + + 2 e − → H 2 + 2 H 2 O In addition to the local degradation of the oxide layer of aluminum, chloride accelerates the metal dissolution considerably. Dissolved aluminum (Al³⁺) connects first with a chloride ion (Cl^-) to aluminum chloride...

...Potentiodynamic polarization measurements for the steel and aluminum specimen were performed in the blank solution and in the solutions of several representative chemical formulas. The corrosion current density (j_corr) is determined by extrapolation from the cathodic...

... based system, the new fuels need to tolerate loss of active cooling in the core for a considerably longer time period while maintaining or improving the fuel performance during normal operation conditions. Advanced steels such as iron-chromium-aluminum (FeCrAl) alloys are being investigated both under...

...Abstract The use of aluminum alloys in drilling riser systems is one method to reduce riser weight, thereby allowing a given drilling platform to drill in deeper water than would be possible with a steel riser system. One of the key performance drivers needed for successful implementation...