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Damping capacity of in situ TiB2 particulates reinforced aluminium composites with Ti addition

✍ Scribed by Yijie Zhang; Naiheng Ma; Haowei Wang; Yongkang Le; Xianfeng Li

Publisher
Elsevier Science
Year
2007
Weight
338 KB
Volume
28
Category
Article
ISSN
0261-3069

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✦ Synopsis

The damping capacity of in situ aluminium (Al)/TiB 2 composite and composite with Ti excess was investigated. The composites were fabricated with an exothermic reaction process via K 2 TiF 4 and KBF 4 salts. The damping behavior of materials over a temperature range of 30-300 °C was investigated using a dynamic mechanical thermal analyzer. Experimental findings indicate that damping capacity of composite with Ti excess is lower than that of Al/5 wt% composite when temperature below 110 °C and higher than of Al/5 wt% composite above 110 °C. The main effect of Ti is the formation of thin layer on TiB 2 particulates resulted in the change of damping capacity.

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