采用中频真空感应熔炼炉、X射线衍射仪、金相显微镜、电子探针、显微硬度计等实验分析方法，研究了稀土金属铈与低熔点金属锡在钢中的相互作用。结果表明，钢液中铈和锡浓度均较高的条件下，铸态试样中可析出化合物Ce3Sn7相，沿晶界分布。经奥氏体区高温退火处理，钢中的Ce3Sn7相化合为三元FeCe3Sn6相。退火状态下FeCe3Sn6相的显微硬度大于基体的显微硬度。FeCe3Sn6相在干燥器内稳定，在纯净水和酸性水溶液中不稳定。
The interaction between the cerium and tin in steel was studied by vacuum induction melting, Xray diffraction, optical microscopy, electronic probe microscopy analysis, and microhardness tester. The result shows that Ce3Sn7 phase formed in the grain boundaries of steel at high contents of both cerium and tin. Furthermore, the Ce3Sn7 phase can transform into FeCe3Sn6 phase by annealing at austenite temperature. The hardness of FeCe3Sn6 phase is higher than that of the matrix in the annealed state, and FeCe3Sn6 is stable in dryer, but corroded in purified water and acid aqueous solution.
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