Development and corrosion behavior ( electrochemical polarization method ) aluminum alloy ( LM- 13) Nano ZrO2 reinforced metal matrix composites refrigerated (CNMMCs)
by Alexandra Figueroa
1. Dispersoid content on corrosion behavior
1.1. If you have an effect on the corrosion behavior with the content of dispersoids . In addition to the dispersoid , the addition of Ni, Si together with Mn serves to further increase corrosion resistance .
2. Polarization
3. Refrigeration effect of solidification
3.1. The optical photomicrographs show the microstructure of the matrix contains 12 wt CNMM cooled . Cast dispersoid % copper using cold 25mm thick . The specimens of refrigerated CNMMCs are dictated by fine grain microstructure due to the cooling effect during solidification.
4. Electrochemical corrosion behavior of CNMMCs
4.1. Electro corrosion behavior Experimental results of the corrosion test done differently CNMMCs polarization (containing 3, 6 , 9 and 12 wt . % Content of dispersoids ) and curves obtained respectively resulting polarization. In each single corrosion test carried out , the corrosion rate gradually decreased with time , reaching a stable saturation value after a certain duration of the test. chemistry CNMMCs
5. Effect of alloying elements
5.1. Elements present in the alloy LM 13 A special alloy 2 -wt . % Ni , 1- wt . % Mn and 12 wt .
6. It is well known that polarization is the deviation of ( potential electrode ) electrochemical balance process due to the passage of electric current . In this investigation too, the values obtained for the electrode polarization depend on the difference in the potential difference between the potential of the polarized electrode and the electrode in equilibrium with solution .
