| Fe2B is a typical kind of interstitial intermetallic compound with high corrosion resistence and wear resistence to molten zinc. But carcks occurred easily in Fe2B because of its eigen-brittleness. In order to reduce our loss and prolong the using life of Fe2B, people are concerning on the research on the process of corrosion and corrosion mechanism of Fe2B in liquid zinc.Fe2B is formed by refined and borided methods. In this paper, the corrosion process, productions and corrosion mechanism of Fe2B in liquid zinc have been studied at different corrosion time. The results show that, the corrosion mechanism of refined Fe2B is thatαwas preferentially eroded by liquid zinc and dissoluble corrosion, and the corrosion mechanism of borided Fe2B is dissoluble corrosion. Liquid zinc dissolved into Fe2B and a small quantity of FeBO3, Fe3BO6, Zn(BO2)2, and ZnBO7 are obtained during the corrosion process. The content of Zn in Fe2B increased with corrosion time prolonging, the most solubility of liquid Zn in Fe2B is 40 wt%,which eaquls to 21 at%.Both initial cracks and cracks which were caused by eigen-brittleness affect the corrosion resistance of Fe2B. The relationship beteen growth orientation of Fe2B crystal and the corrosion process of liquid zinc affect the performance of corrosion. When they parallel with each other, degraded Fe2B were mainly affected by ruptured cracks, on the other hand, while perpendicular, degraded Fe2B were caused by stresses of compounds between the grain boundary.
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