This work characterized and compared the corrosion resistance of a traditional secondary HPDC AlSiCu alloy with two innovative AlSi low-Cu and low-Fe ones. Samples were collected from both the bulk and the skin of castings to evaluate the differences. Potentiodynamic tests were performed in 3.5% NaCl and 0.05 M Borax + 0.01 M NaCl water solutions and microstructural analyses have been carried out. The results demonstrated the higher corrosion resistance of the two innovative alloys tested. Skin surface showed a worse resistance compared to bulk, especially for the traditional AlSiCu alloy.
Corrosion behavior of primary and secondary AlSi high pressure die casting alloys
Cecchel, S.;Cornacchia, G.;Gelfi, M.
2017-01-01
Abstract
This work characterized and compared the corrosion resistance of a traditional secondary HPDC AlSiCu alloy with two innovative AlSi low-Cu and low-Fe ones. Samples were collected from both the bulk and the skin of castings to evaluate the differences. Potentiodynamic tests were performed in 3.5% NaCl and 0.05 M Borax + 0.01 M NaCl water solutions and microstructural analyses have been carried out. The results demonstrated the higher corrosion resistance of the two innovative alloys tested. Skin surface showed a worse resistance compared to bulk, especially for the traditional AlSiCu alloy.File in questo prodotto:
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