NaCl溶液中重力铸造镁合金的耐腐蚀性.pdf

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1 CORROSION SCIENCE AND PROTECTION TECHNOLOGY Jan. 2011
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: : A : 1002–6495(2011)01–0033–04
Corrosion Behavior of Gravity Cast AZ91D Magnesium
Alloy in NaCl Solution
JIN Bo1, YANG Yi1, YANG Gang1, ZHANG Qiao-dong2, LU Dong1, LI Jun-tao1
1. College of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065
2. Hubei 3611 Factory, Xiangfan 441002
Abstract: The corrosion performance of AZ91D magnesium alloy prepared by gravity sand casting
was investigated in mol/L NaCl solution. The corroded alloy and the formed oxide scales were
examined by means of OM, SEM and XRD. The results showed that the corrosion of cast AZ91D
in NaCl solution began with pitting, from which corrosion expanded over the surface and even
rated into the alloy substrate. position of the oxide cales formed during corrosion
changed with time; oxides scales were