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《材料导报》期刊社  2017, Vol. 31 Issue (18): 59-63    https://doi.org/10.11896/j.issn.1005-023X.2017.018.013
  材料研究 |
6061铝合金分别在Q235钢和纯钛表面的反应润湿*
靳鹏, 钟伟强, 李富祥, 林巧力
兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050
Reactive Wetting of Q235 Steel and Pure Ti by Molten Al 6061 Alloys
JIN Peng, ZHONG Weiqiang, LI Fuxiang, LIN Qiaoli
State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology, Lanzhou 730050
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摘要 采用座滴法在高真空条件下研究了熔融6061铝合金在600~700 ℃分别与Q235钢和纯钛的润湿行为。研究表明两者都为典型的反应润湿,且最终润湿性随着温度的升高而改善;界面反应的自由能变化对最终润湿性及界面结构影响较小,而基板金属在铝中的溶解度不同决定了界面反应层厚度(即溶解度越大则反应层越厚);三相线附近的还原反应诱发了前驱膜的产生,且最终润湿性越好则前驱膜越宽;两者体系的铺展动力学均可以由RPC模型描述:在Al/Ti体系中整个润湿过程分为两个阶段,即先非线性铺展,后线性铺展阶段,两个阶段的铺展活化能分别为72 kJ/mol、118 kJ/mol,且界面上存在Si的富集;在Al/Q235钢体系中整个润湿过程呈线性铺展,铺展活化能为86 kJ/mol,无Si元素在界面富集。
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靳鹏
钟伟强
李富祥
林巧力
关键词:  反应润湿  前驱膜  热浸镀    
Abstract: Wetting of Q235 steel and pure Ti by Al 6061 alloy were studied by modified sessile drop method at 600~700 ℃ under high vacuum. The results showed two systems were typically reactive wetting, and the wettability was improved with the increase of temperature. The negligible effect of interfacial reactivity on final wettability and interfacial structures, and the solubility of base metal in Al determined the thickness of reaction layer (the larger solubility and the larger thickness). Reduction reaction at close of triple line induced the formation of precursor film (the better final wettability and the wider precursor film). The spreading dynamic, both of these two wetting systems could be described by RPC model. For Al/Ti system, the wetting behaviors could be divided into two stages, i.e., first nonlinear spreading and then linear spreading, the activation energies for these two stages were 72 kJ/mol, 118 kJ/mol, and Si segregation at the solid/liquid interface could be found. For Al/Q235 steel system, only one linear spreading stage could be found, the activation energy was 86 kJ/mol, and almost no trace of Si segregation at the solid/liquid interface was found.
Key words:  reactive wetting    precursor film    hot dip
               出版日期:  2017-09-25      发布日期:  2018-05-08
ZTFLH:  TG174.443  
基金资助: 国家自然科学基金(51665031;51465032)
通讯作者:  林巧力:通讯作者,男,1983年生,博士,副教授,主要从事表面改性、金属/金属及金属/陶瓷体系润湿性的研究 E-mail:lqllinqiaoli@163.com   
作者简介:  靳鹏:男,1989年生,硕士研究生,主要从事金属/金属体系润湿性的研究
引用本文:    
靳鹏, 钟伟强, 李富祥, 林巧力. 6061铝合金分别在Q235钢和纯钛表面的反应润湿*[J]. 《材料导报》期刊社, 2017, 31(18): 59-63.
JIN Peng, ZHONG Weiqiang, LI Fuxiang, LIN Qiaoli. Reactive Wetting of Q235 Steel and Pure Ti by Molten Al 6061 Alloys. Materials Reports, 2017, 31(18): 59-63.
链接本文:  
http://www.mater-rep.com/CN/10.11896/j.issn.1005-023X.2017.018.013  或          http://www.mater-rep.com/CN/Y2017/V31/I18/59
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