EFFECT OF THE HEAT AND SURFACE LASER TREATMENT ON THE CORROSION DEGRADATION OF THE Mg-Al ALLOYS
Journal Title: Materials Engineering - Materialove inzinierstvo (MEMI) - Year 2011, Vol 18, Issue 3
Abstract
In this paper there is presented the corrosion behaviour of the cast magnesium alloys as cast state, after heat and laser treatment. Pitting corrosion resistance of the analyzed alloys was carried out using the potentiodynamic electrochemical method (direct current), based on a anodic polarisation curve. On the basis of the achieved anodic polarisation curves, using the Tefel extrapolation method near to the corrosion potential, the quantitative data were determined, which describe the electrochemical corrosion process of the investigated alloys: value of the corrosion potential Ecorr (mV), polarisation resistance R[sub]P[/sub] (kΩ.cm[sup]2[/sup]), corrosion current density icorr (μA/cm[sup]2[/sup]), corrosion rate Vcorr (mm/year) as well the mass loss V[sub]c[/sub] (g/m[sup]2[/sup]).
Authors and Affiliations
Leszek Dobrzański, Tomasz Tański, Szymon Malara
Keywords
Related Articles
- EP ID EP92159
- DOI -
- Views 156
- Downloads 0
Investigation of possible causes for appearance of a crack in the welded joint of the ship winch frame
Ship winches are one of the most important parts of the ship equipment since they perform the most responsible tasks on various ships. In the majority of cases, the ship winches are welded structures. All the necessary c...
FINITE ELEMENT IMPLEMENTATION OF DELAMINATION IN COMPOSITE PLATES
Modelling of composite structures by finite element (FE) codes to effectively model certain critical failure modes such as delamination is limited. Previous efforts to model delamination and debonding failure modes using...
USING THE VIDEOEXTENSOMETRY AND UCI - HARDNESS FOR MONITORING OF AUTOMOTIVE STEEL SHEETS
The paper deals with examination of relation between the hardness and the size of plastic zone during the tensile loading. UCI (Ultrasonic Contact Impedance) micro-hardness method was used for hardness measurements. Defo...
Study of the influence of agricultural waste on the porosity of clay brick
This paper deals with the influence of two organic residues on the porosity of clay bricks. The insulation capacity of the brick increases with increasing the porosity. Combustible organic additions are often used to for...
FRACTURE BEHAVIOUR OF P/M Cr-V LEDEBURITIC STEEL WITH DIFFERENT SURFACE ROUGHNESS
The samples made from the Vanadis 6 PM ledeburitic tool steel were surface machined to different quality and heat treated by standard regime of the processing. Three point bending tests were carried out on processed samp...