Internal friction behavior of liquid Bi–Sn alloys

✍ Scribed by Aiqing Wu; Lijun Guo; Changsong Liu; Erguang Jia; Zhengang Zhu

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 230 KB
• Volume: 369
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2005.08.003

✦ Synopsis

Pure Bi and Sn and four Bi-Sn alloys distributed on the entire concentration range were selected for internal-friction investigation over a wide temperature range. There exist two peaks in the plots of internal friction versus temperature for liquid Sn, Bi-Sn60 and Bi-Sn90 alloys, one peak being located at about 480 C and another at about 830 C. Only a single internal-friction peak at about 830 C occurs in liquid Bi-Sn43 (eutectic composition). No internal-friction peak appears in liquid Bi-Sn20 alloy and pure Bi. The height of the internal-friction peaks depends on the content of Sn. The present finding suggests that Sn-rich Bi-Sn alloys may inherit the internal-friction behaviors of pure Sn, whereas Bi-rich Bi-Sn alloy seems to be like pure Bi. The position of the internal-friction peaks is frequency dependent, which resembles the internal-friction feature in structure transition in solids.