(東北大學(xué) 材料與冶金學(xué)院， 沈陽 110006)
摘 要: 在考慮理論計算合金形成熱的各種影響因素的基礎(chǔ)上，用Miedema二元合金生成熱模型計算了彩色熱鍍鋅用Zn-Mn和Zn-Ti二元溶液的混合焓ΔHmix與添加元素的摩爾分?jǐn)?shù)之間的關(guān)系；利用Tanaka近似關(guān)系式及一些基本熱力學(xué)關(guān)系計算了上述兩個二元體系的過剩混合熵ΔS Emix、過剩混合自由能ΔG Emix及各組元的活度。結(jié)果表明，Zn-Mn和Zn-Ti兩溶液相對于理想溶液都有很大的負(fù)偏差。
關(guān)鍵字: 彩色熱鍍鋅； 溶液； 熱力學(xué)性質(zhì)
of Zn-Mn and Zn-Ti
（School of Materials and Metallurgy， Northeastern University，
Shenyang 110006， P.R.China）
Abstract:Considering different factors that affect the formation heat of binary alloys， the relationship among Zn-Mn and Zn-Ti formation heats and mole fraction of additives were obtained by Miedema's mode; ΔHmix， ΔG Emix and activities of the two systems were calculated by Tanaka model and some relationships of thermodynamics. The results indicate that Zn-Mn and Zn-Ti solutions have a rather large negative deviation relative to ideal solution.
Key words: coloration hot dip galvanization; solution; thermodynamic properties
