Determination of susceptibility to intergranular corrosion and electrochemical reactivation behaviour of AISI 316L type stainless steel

Aydogdu, G. H.
Aydınol, Mehmet Kadri
In this study, double loop electrochemical potentiokinetic reactivation (DLEPR) test was applied to determine the degree of sensitization in 316L type stainless steel, where obtained results were correlated with revealed microstructures after oxalic acid test and weight loss measurements of Streicher and Huey acid tests. Best agreement was provided with test parameters which are 1 M H2SO4 and 0.005 M KSCN at 0.833 mV/s scan rate at 30 degrees C. Specimens were classified structurally as absence of chromium carbides - step, no single grain completely surrounded by carbides - dual and one or more grain completely surrounded by carbides - ditch, in the as-etched structure, if the I-r:I-a (x100) ratios were obtained to be between 0 and 0.2, 0.2 and 5.0 and 5.0 and higher, respectively. It was also found that at high KSCN concentrations, reactivation current profile skewed to higher potentials where this was attributed the formation of metastable pits, during the anodic scan of the test procedure.


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YENİLMEZ, FİRDES; Düzgün, Şebnem; Aksoy, Ayşegül (2023-01-01)
In this study, three-dimensional (3-D) ordinary kriging of dissolved oxygen (DO) concentrations was performed for a eutrophic reservoir based on 81 sampling points using Stanford Geostatistical Modeling Software (SGeMs). Potential hotspots (problematic zones in terms of water quality with high/low DO concentrations) not only at the surface but also in deeper layers of Porsuk Dam Reservoir (PDR) were evaluated. Moreover, 3-D distributions of DO, and specific conductivity (SC) were examined against the thermo...
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Ozdemir, Esra; Tincer, Teoman; Hacaloğlu, Jale (2016-11-01)
In this study, melt blended poly(lactic acid) and poly(ethylene glycol), (PLA)/PEG samples involving 10, 15 and 20 wt% PEG were prepared and characterized by direct pyrolysis mass spectrometry technique in addition to classical techniques such differential scanning calorimetry, thermogravimetric analyses and mechanical tests. The incorporation of PEG resulted in consistent and significant decrease in the tensile strength and modulus, and reduction in endothermic melting peak of PLA due to the plasticizing e...
Development of test structures and methods for characterization of MEMS materials
Yıldırım, Ender; Arıkan, Mehmet Ali Sahir; Department of Mechanical Engineering (2005)
This study concerns with the testing methods for mechanical characterization at micron scale. The need for the study arises from the fact that the mechanical properties of materials at micron scale differ compared to their bulk counterparts, depending on the microfabrication method involved. Various test structures are designed according to the criteria specified in this thesis, and tested for this purpose in micron scale. Static and fatigue properties of the materials are aimed to be extracted through the ...
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Kalayci, Asuhan; Özel, Barış; Öztop, Halil Mecit; Alpas, Hami (2022-01-01)
This study investigates the effects of high hydrostatic pressure (HHP) on some functional properties of pea protein isolate (PPI). HHP was combined with various temperature and pH conditions to investigate the combined effects of HHP-based food processing conditions on the functional properties of PPI. Herein, PPI solutions prepared at different pH conditions (3.0, 5.0, and 7.0) were subjected to 300, 400, and 500 MPa HHP treatment at 25 and 50°C for 5 min. Water-holding capacity (WHC), solubility, and emul...
Assessing Weathering in Field Cell Experiments Using Quantitative Mineralogy and Sequential Leaching
Haupt, C; Kabwe, L; Klein, B; Jorge, A; Altun, Naci Emre (null; 2011-11-01)
The objective of this study was to characterize the weathering behavior of select samples from the non acid producing waste rock materials at the Antamina mine using field cell tests and laboratory scale sequential extraction tests. Field cell results have indicated the release of metals, particularly arsenic and zinc, under neutral pH conditions. Sequential extraction and mineralogical characterization tests have demonstrated that carbonate dissolution under acidic conditions may be a significant source of...
Citation Formats
G. H. Aydogdu and M. K. Aydınol, “Determination of susceptibility to intergranular corrosion and electrochemical reactivation behaviour of AISI 316L type stainless steel,” CORROSION SCIENCE, pp. 3565–3583, 2006, Accessed: 00, 2020. [Online]. Available: