The atmospheric galvanic effect of magnesium alloys coupled with A3 steel is the largest, while that of the magnesium alloys/LY12 aluminum alloy couple is the smallest.

• 镁合金与A3钢偶合后， 其大气电偶腐蚀效应最大，而与LY12铝合金组成的电偶对的大气电偶腐蚀效应最小。