The potentiostatic tests showed that ER is in accordance with critical potential of crevice corrosion. The EPMA analysis and SEM observation showed that the intermetallic compound TiFe precipitated at intergranular boundaries in titanium.

• 通过电子探针分析和SEM观察发现，铁以TiFe形式在晶界析出，腐蚀优先在TiFe析出物上发生，并且沿晶界向内部发展。