Cover
Vol. 7 No. 1 (2007)

Published: June 30, 2007

Pages: 75-82

Original Article

The Effect of (Aquafina) Drinking Water on the Corrosion Rate and Hardness of (Al-Si) and (Al-Mg-Si) Alloys

Safaa A. S. Almtori 1
1 Materials Engineering Department, Engineering College, Basrah University/Iraq
History
  • Received: March 30, 2007
  • Available Online: June 30, 2007
DOI

https://doi.org/10.33971/bjes.7.1.8

Abstract

The present work investigates the effects of drinking water on the erosion- corrosion rate and Vickers hardness of (Al-Si) and (Al-Mg-Si). (Al-Si) alloy Which is well-known as casting alloy with high wear resistance, low thermal expansion coefficient, good corrosion resistance and improved hardness at a wide range of temperatures While (Al-Mg-Si) alloys have good formability, weld ability, machine ability and corrosion resistance. The alloys specimens which are used for piping and containing water and carbonated water were exposed in erosion- corrosion system in factories by using drinking water type AQUAFINA as exposure media for different exposure time (1-30)h. to measure the erosion-corrosion rate. The results show that there is small different in the rate of corrosion, moreover (Al-Mg-Si) alloy have high resistance to erosion-corrosion in drinking water due to the consisting of (Mg2Si) phase which is precipitate as fine particles due to resist dislocations movement lead to high corrosion strength and the (Al-Si) alloy have high Vickers hardness at natural aging due to the present of high ratio hardening silicon element.

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