Zn-Fe-Ti体系中三元新相T的晶体结构研究  

Investigation of Crystal Structure of Ternary Compound T in Zn-Fe-Ti System

作　　者：朱中喜[1] 吴煜[1] 苏旭平[1] 

机构地区：[1]湘潭大学机械工程学院,湖南湘潭411105

出　　处：《湘潭大学自然科学学报》2010年第2期44-47,共4页Natural Science Journal of Xiangtan University

基　　金：湖南省科技厅项目(2008WK2001;2009GK3029);湖南省自然科学基金项目(07JJ3097)

摘　　要：用X射线粉末衍射法测定了Zn-Fe-Ti三元体系中存在的三元新相T的晶体结构，证实了合Ti镀锌时。在ζ纯锌覆层上形成的化合物不是Γ1相的延伸。而是一个三元新相，通过对该相的单相样品的X射线粉末衍射分析，确定了该相在5—85°范围内的特怔峰值，并通过尝试法程序Treor90成功指标化了该相的晶格类型及晶格常数，得出其为立方晶格，晶格常数α=b=c=13．91011A。α=β=γ=90.0°，指标化的计算结果与实验值十分吻合。同时，通过与Γ1相的X射线衍射图谱进行对比发现T相与Γ1相有明显不同的特怔峰。该结果对分析Ti在热浸镀锌过程中的作用反锌渣形成和检测有十分重要的意义。The crystnl structure of the ternary compound in the Zn-Fe-Ti system, which is denoted as T, has been investigated by X-ray powder diffrnction. The reaulta confirmed that the compound formed at the boundary of the ζ and pure zinc layer when steel galvanized in the Ti-containing bath is a new phaae but not the extension of the Pt phnse. The characteristic penks of the compound in the 20 range of 5～85° have been reported for the first time. Furthermore, the successful indexntion of the pattern is performed by Treorg0 program with try and cut method. The results indicate that the ternary compound ia belong to cubic ayatem with lattice constants of a = b = c = 13. 910 11 A and α=β=γ= =90. 0°. The calculated reaulta after indexarian agree very well with the experiment results. Besides, the difference between the T and Γt phnae is obvious based on their X-ray patterns. And the present results are aignificant in analyzing the effect of Ti and the formation of the ternary dross in galvanizing.

关 键 词：Zn-Fe-Ti 晶体结构 热镀锌 金属间化合物 X射线 

分 类 号：TG174[金属学及工艺—金属表面处理]