نتایج جستجو برای: aa2024
تعداد نتایج: 357 فیلتر نتایج به سال:
There is a need for an improvement in accuracy of forecasting of residual service life of commercially available aircraft components. Therefore, easy in use and precise non-destructive testing (NDT) methods for determination of the material fatigue are especially attractive. A basic understanding of structural changes during the fatigue damage process on different scaling levels is given by the...
The performance of a series of novel room temperature ionic liquids (ILs) based on the trihexyl(tetradecyl)phosphoniumcation (P66614) and a number of novel anions have been studied in pin-on-disk tests using a 100Cr6 steel ball on AA2024 aluminium disks. The anions coupled to the (P66614) cation include diphenyl phosphate (DPP-), dibutyl phosphate (DBP-), bis (2,4,4-trimethyl pentyl) phosphinat...
The effect of the presence an anodic film and hybrid sol-gel coating loaded with corrosion inhibitors was evaluated as a strategy for enhanced barrier active protection aluminium alloy 2024-T3. In this study, AA2024-T3 specimens were anodized in modified sulphuric-citric acid bath (SCA) first layer protective multilayer system subsequently protected by application silica-based coatings. These c...
Atmospheric corrosion of aluminum aircraft structures occurs due to a variety reasons. A typical phenomenon leading during operation is the deliquescence salt contaminants changes in ambient relative humidity (RH). Currently, controlled through scheduled inspections. In contrast, present contribution aims continuously monitor atmospheric using acoustic emission (AE) method, which could lead str...
To study the material based on binary system Ti + Cu (50% atm), samples were produced from powders of commercially pure metals and additionally ground in a ball mill (final size about 12 µm) by spark plasma sintering. The following intermetallic phases obtained materials: CuTi2, TiCu, Ti3Cu4. materials have hardness 363 385 HV (800 900 °C), microhardness 393 397 µHV, density 4.24 5.23 kg/m3, re...
The corrosion inhibition effect of 3-amino-5-mercapto-1,2,4-triazole (AMT) on AA2024 aluminium alloy in 3.5 wt.% NaCl solution was investigated, and the mechanism revealed. influence AMT concentration performance evaluated by potentiodynamic polarization curve electrochemical impedance spectroscopy (EIS). Surface analysis surface-enhanced Raman scattering (SERS) spectra were used to study adsor...
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