The phase equilibria in the Sb-Sn system – Part II: Experimental results

• Published in: Journal of alloys and compounds Vol. 743; pp. 523 - 536
• Main Authors: Schmetterer, Clemens, Polt, Julia, Flandorfer, Hans
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 30.04.2018; Elsevier BV
• Subjects: A. Electrode materials; A. Intermetallics; A. Metals and alloys; Alloys; Antimony; C. Crystal structure; C. Phase diagrams; Crystal structure; Electrodes; Intermetallic compounds; Literature reviews; Phase diagrams; Phase equilibria; Series & special reports; Tin; A. Electrode materials; A. Metals and alloys; C. Phase diagrams; A. Intermetallics; C. Crystal structure
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2017.11.367

Based on results from XRD, SEM/EDX and DTA, a new version of the Sb-Sn phase diagram was established that includes the Sb3Sn4 phase with R3¯m space group and a commensurately ordered superstructure that can be derived from stacking seven layers of the conventional rhombohedral SbSn cell. The close structural relationships between these two structures have so far caused Sb3Sn4 to be overlooked in most works. The phase Sb2Sn3, which had been established in some phase diagram versions without clear proof or structural description could be ruled out. Seemingly diverging literature results can now be explained in a consistent way based on a comprehensive literature review in part I and the new data from the present work, part II. •A new phase diagram version of the Sb-Sn system was established.•The new compound Sb3Sn4 was introduced and its crystal structure is described.•The complex crystallography of the Sb-Sn system is discussed.•The structural relationship between SbSn and Sb3Sn4 is described.•Contradictions in the literature can be explained through the new results.