Askar Soltani

11 Questions 37 Answers 0 Followers

Questions related from Askar Soltani

In Lithium ion batteries with graphite anode, what would be the final possible potential of the anode electrode at the end of discharging process?

We know that OCV of graphite anode vs Li/Li+ is approximately 0.4 V, So how it is possible to get the potential level of 4 V vs Li/Li+ in the graphite anode in overdischarge tests ? Please take a...

13 November 2021 6,758 3 View

How to calculate concentration of Chloride ion in a known solution in ppm ?

Suppose that there is a test solution by following chemical composition : CaCl2 (0.305 wt%) NaCl (9.62 wt%) MgCl2 (0.186 wt%) Deionized water (89.89 wt%) How do you calculate chloride...

27 October 2020 511 0 View

Why 3.5% wt NaCl solution has been considered to simulate sea water in corrosion tests?

As you know, Test electrolyte in most of the academic corrosion studies have been considered as 3.5% wt NaCl (Rerfer to Standard ASTM G44) and in other standards like NACE 1D182 the concentration...

10 October 2020 9,116 17 View

In corrosion inhibitor's investigations, How do you take sample from the surface of the investigated electrode in order to conduct FTIR analysis ?

As you know, one of the complementary test methods in inhibitor's investigations is to perform FTIR analysis on the film which can be formed on the surface of the metal in laboratory tests. Since...

01 January 1970 9,572 0 View

How to plot probable cathodic and anodic reaction curves along with the experimental polarization curve in E vs. log i ?

As you know in corrosion experiments, one of the theoretical investigations of the accuracy of the experimental tafel curve is to plot all of the probable anodic and cathodic reactions curve in E...

01 January 1970 1,359 2 View

SSC vs SCC , Differences and Characteristics of these two crack damage mechanisms , Probability of SSC occurrenc in wet H2S soltions

Hi there As a corrosion engineer, it was so interesting for me to compare SCC (Stress Corrosion Cracking) and SSC (Sulfide Stress Cracking). One of the most characteristic differences between...

01 January 1970 1,536 3 View

In your opinion, what would happen in the vicinity of the working electrode in corrosion inhibitor's laboratory experiments?

As you know one of the most helpful techniques in analyzing corrosion inhibitor's in laboratory experiments is to conduct FTIR or ATR-FTIR on the sample taken from the surface of the working...

01 January 1970 5,416 3 View

To decrease the corrosion rate, what changes are desirable to make on the double layer capacitace?

For corrosion process, different electrical equivalent circuit models have been proposed depending on the solution chemical composition. Main electrical elements which we consider in these...

01 January 1970 2,908 4 View

Flowing path of ions in Li-ion batteries - Is it one-way road or not?

We know that when a metal is corroding, anions go to the anodic sites and cations migrate to the cathodic sites and the corrosion cell acts as a closed electrical loop and corrosion of the metal...

01 January 1970 7,226 0 View

Why we need to consider oxygen evolution potential in a deaerated solution in cyclic polarization tests according to the standard ASTM G61 ?

Hi there. I conducted a cyclic potentiodynamic polarization on Stainless Steel samples according to the standard ASTM G61. Based on the procedure proposed by this standard it needed to sweep the...

01 January 1970 5,418 2 View

How to locate exact instant-off potential on depolarization curves in CP surveys?

In order to know the exact polarization level in a buried metallic structure or the bottom plates of an above ground storage tank we need to know how to locate the polarized potential on...

01 January 1970 5,559 0 View