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熔融Sn-3.0Ag-0.5Cu在倾斜铜基板上表面形貌的模拟 被引量:3

Simulation analysis on the surface morphology of Sn-3.0Ag-0.5Cu melting on the inclined Cu substrate
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摘要 通过润湿性实验,借助有限元软件Surface Evolver模拟研究了在490 K温度下熔融态的无铅焊料Sn-3.0Ag-0.5Cu在倾斜铜基板上的铺展行为及界面特性.根据经验方程拟合熔滴侧面轮廓曲线并获得三相点处的接触角大小.经计算发现,在基板的倾斜角度较小时,三相接触线几乎不发生移动,三相接触线的后三相点沿基板向前移动,前三相点保持不动,相应地,前进角逐渐增大并达到最大值.随着基板倾斜角度的继续增大,前三相点开始向前移动,导致前进角逐渐减小,最终熔滴从基板上滑落.通过模拟铺展过程表征了接触角的滞后现象;通过SEM及EDS手段分析界面微观结构,说明了在润湿过程中发生了界面化学反应,确定了金属间化合物Cu6Sn5生成并呈扇贝形分布. To investigate interface properties of molten Sn-3.0Ag-0.5Cu solder melting on the inclined Cu substrate, numerical simulation is carried out by Surface Evolver at 490 K with wetting experiments. Profile curves of the droplets are fitted with empirical equation, which are proposed to obtain preferable contact angles. According to the experimental results, it is indicated that the contact line hardly moves at the very beginning and the rear point of triple line moves forward along the substrate subsequently, but the front point of triple line is still pinned on the substrate. Correspondingly,the advancing contact angle gradually increases to the peak value. When the inclined angle of the substrate continues to increase, the advancing contact angle decreases along with the front point of triple line moving forward, and finally the drop slides down from the substrate. In this paper, contact angle hysteresis is characterized by the numerical simulation. Furthermore, the interface microstructure is observed by means of SEM and EDS. It is illustrated that the interfacial chemical reaction happens in the wetting process which determines the formation of intermetallic Cu6Sn5 that distributes as the scallop shape.
出处 《有色金属科学与工程》 CAS 2014年第4期7-12,共6页 Nonferrous Metals Science and Engineering
基金 国家自然科学基金资助项目(51174008) 中国科学院战略性先导科技专项-实践十号返回式科学实验卫星(XDA04020411 XDA04020202-11)
关键词 无铅焊锡 表面形貌 滞后性 数值模拟 lead-free solder surface morphology hysteresis numerical simulation
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参考文献15

  • 1Lai H,Duh J. Lead-free Sn-Ag and Sn-Ag-Bi solder powders prepared by mechanical alloying[J]. Journal of Electronic Materials,2003,32 (4): 215-220.
  • 2Xu H,Yuan Z,Lee J,et al. Contour evolution and sliding behavior of molten Sn-Ag-Cu on tilting Cu and Al2O3 substrates[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects,2005,359(1/2/3): 1-5.
  • 3Allen S,Notis M,Chromik R,et al. Microstructural evolution in lead-free solder alloys. Part II. Directionally solidified Sn-Ag-Cu,Sn-Cu and Sn-Ag[J]. Journal of Materials Research,2004,19(5): 1425-1431.
  • 4Krasovitski B,Marmur A. Drops down the hill: theoretical study of limiting contact angles and the hysteresis range on a tilted plate[J]. Langmuir,2005,21(9): 3881-3885.
  • 5Eustathopoulos N. Dynamics of contact angle phenomenon[J]. Acta Materialia,1998,46(7): 2319-2327.
  • 6Whyman G,Bormashenko E. Oblate spheroid model for calculation of the shape and contact angles of heavy droplets[J]. Journal of Colloid and Interface Science,2009,331(1):174-177.
  • 7Abdelhadi O M,Ladani L. IMC growth of Sn-3.5Ag/Cu system: Combined chemical reaction and diffusion mechanisms[J]. Journal of Alloys and Compounds,2012,537 (5): 87-99.
  • 8Suzuki S,Nakajima A,Tanaka K,et al. Sliding behavior of water droplets online-patterned hydrophobic surfaces[J]. Applied Surface Science,2008,254 (6): 1800-1805.
  • 9He B,Lee J,Patankar N A. Contact angle hysteresis on rough hydrophobic surfaces[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects,2004,248(1/2/3): 101-104.
  • 10Parker A R,Lawrence C R. Water capture by a desert beetle[J]. Nature,2001,414: 33-34.

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