| 固体粉末的分形几何体尖端烧结模型 |
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| 引用本文： | 赵军 章绚. 固体粉末的分形几何体尖端烧结模型[J]. 中国科学技术大学学报, 1993, 23(2): 192-200 |
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| 作者姓名： | 赵军 章绚 |
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| 作者单位： | 中国科学技术大学近代化学系(赵军，章绚)，中国科学技术大学近代化学系(范崇正) |
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| 摘 要： | 本文提出一个分形几何模型(Fractal geometry model)。用它描述固体粉末体系的结构特征,并在此基础上建立了单金属粉末体系烧结过程的动力学模型。以单分子反应为例,研究了与烧结有关的若干因素。将理论预测与已有实验进行比较,得到了较满意的结果。
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| 关 键 词： | 分形几何 颗粒度和比表面分布 烧结 表面势垒 过渡态理论 |
The Pointed End Sintering Model for a Fractal Geometry Model of Powder Compact |
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| Zhao Jun Zhang Xuan Fan Chongzheng. The Pointed End Sintering Model for a Fractal Geometry Model of Powder Compact[J]. Journal of University of Science and Technology of China, 1993, 23(2): 192-200 |
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| Authors: | Zhao Jun Zhang Xuan Fan Chongzheng |
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| Affiliation: | Department of Modern Chemistry |
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| Abstract: | A fractal geometry model (FGM)is propounded to describe structural characters of powder compact. On this basis, a geometric and then a dynamic model are set up for sintering of single metal systems. Several factors relative to the sintering process are studied with single molecule reactions as an example; theoretical prediction and experimental results are compared for Raney Cu catalyst's sintering in H_2 atmosphere, with satisfactory results. |
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| Keywords: | fractal geometry partcle size and surface area distribution sintering surface potential barrier transition state theory |
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