101. Wetting behavior of Al alloys on a TiH2 substrate
- Author
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Li, Dawu, Li, Jie, Zhang, Xiaoming, Sun, Ting, and Yao, Guangchun
- Subjects
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ALUMINUM alloys , *WETTING , *HYDRIDES , *SUBSTRATES (Materials science) , *TITANIUM compounds , *CHEMICAL reactions , *CONTACT angle , *EFFECT of temperature on metals - Abstract
Abstract: The wetting behavior of Al–Ge alloys on TiH2 substrates was investigated by an improved sessile drop method under high vacuum and in a temperature range of 773–818K. Results indicate that the equilibrium contact angles of Al–Ge/TiH2 increase linearly with temperature according to the following formula: θ =0.2882T −85.04, and decrease linearly as the Ge content increases from 25.2% to 36.2% according to the formula: θ =214−200Ge (wt.%). The worst wetting behavior was obtained for a pure Al/TiH2 system at its foaming temperature (973K). TiH2 particles were prone to aggregate and were thus difficult to disperse. This could be one of the reasons for closed-cell aluminum foam products having non-uniform pores. [Copyright &y& Elsevier]
- Published
- 2010
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