| 硼砂水溶液的成核诱导期 |
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| 引用本文： | 王子忱,郭昕昕,张丽华,李熙,徐宝琨.硼砂水溶液的成核诱导期[J].吉林大学学报(理学版),1992(2). |
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| 作者姓名： | 王子忱 郭昕昕 张丽华 李熙 徐宝琨 |
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| 作者单位： | 吉林大学化学系 长春
(王子忱，张丽华，李熙)，吉林大学化学系 长春哈尔滨玻璃钢研究所
(郭昕昕)，吉林大学化学系 长春(徐宝琨) |
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| 摘 要： | 本文测量了不同过冷度下硼砂水溶液的成核诱导期。结果表明:测量诱导期和测量亚稳区宽度所得到的表观成核级数m是一致的。在低过饱和区,非均匀成核是主要的,实验结果偏离了均匀成核的理论表征;在高过饱和区均匀成核起着控制作用,实验和理论分析的结果吻合较好。
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| 关 键 词： | 硼砂水溶液 成核 诱导期 |
The Study on the Induction Period of Nucleation for the Aqueous Na_2B_4O_7 Solution |
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| Wang Zichen,Guo Xinxin,Zhang Lihua,Li Xi and Xu Baokun.The Study on the Induction Period of Nucleation for the Aqueous Na_2B_4O_7 Solution[J].Journal of Jilin University: Sci Ed,1992(2). |
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| Authors: | Wang Zichen Guo Xinxin Zhang Lihua Li Xi and Xu Baokun |
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| Abstract: | The induction periods of nucleation for the aqueous Na_2B_4O_7, solution were measured. It can be concluded that the value of nucleation kinetics exponent m provided by the measurements of metastable zone widths is in agreement with that obtained by measuring the induction periods of nucleation. At the low supersaturation region, experimental results deviate from the theoretical characterization of homogeneous nucleation. The results seem to indicate that at low supersaturation region (S<1.28), the heterogeneous nucleation mechanism is dominant. In the high supersaturation region (S<1.28), the homogeneous nucleation becomes rate controlling. |
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| Keywords: | aqueous Na_2B_4O_7 solution nucleation induction period |
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