Activities of binary baths with 1% solute as standard states

作者：Le, QC; Lu, GM; Cui, JZ

来源：Transactions of Nonferrous Metals Society of China, 2001, 11(3): 458-461.

• activities
• colored hot dip galvanization
• solution

The relationships of activities with 1% solute as standard state and mass fraction of solute, and hot-dip temperature, were given on the base of Miedema's model, Tanaka expression, some basic thermodynamic relationships; and discussion was carried out on Zn-Mn and Zn-Ti binary alloys by calculation, in which varied colors can be achieved on the hot-dip steel sheets. The results indicate that the activity of solute shows positive deviation relative to Henry's law for both Zn-Mn and Zn-Ti binary dilute solution. The degree of deviation increases with increasing solute and decreases with increasing bath temperature. As the solution is very dilute solution ( w(Mn)less than or equal to 40% for Zn-Mn alloy, w (Ti)less than or equal to8% for Zn-Ti alloy), the two binary baths can all be treated as ideal dilute solutions.

• 出版日期2001-6
• 单位东北大学