Aluminium Alloys with Improved Corrosion Resistance in High Temperature Water

摘要

Small additions of Si to Al-Ni alloys are harmful for the high temperature corrosion resistance while addition of 10 ％ Si give alloys with promising properties.nTwo Al alloys with a high Si content IFA 2 aluminium (Al-1 ％ Ni, 10 ％ Si, 0.3 ％ Fe) and IFA 3 aluminium (Al-1 ％ Ni, 12 ％ Si, 0.15 ％ Fe, 0.8 ％ Mg) were tested in loops together with X8001 aluminium (Al-1 ％ Ni, 0.3 ％ Fe, 0.2 ％ Si) at 230°C and 265°C. The loop tests were run with a ratio of aluminium area to water volume of 200 cm2/l and with a flow rate as high as 20 m/sec.