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Ostwald ripening and the kinetics of rain initiation
Ostwald ripening and the kinetics the kinetics
2011/8/26
A central problem in cloud physics is understanding the kinetics of the growth of water droplets.It is believed that there exists a ‘condensation-coalescence bottleneck’ in the growth of intermediate ...
以淀粉等易获得的生物质为碳前驱物, 亚铁盐为添加剂, 采用水热法制备了碳材料. 实验发现, 在反应过程中, 首先生成了被无定形碳包裹的铁氧化物纳米棒, 形成碳/铁氧化物的核/壳结构. 在进一步的反应中, 铁氧化物核自发溶解, 最终得到了空心的碳纳米棒. 讨论了铁氧化物自发溶解的原因, 认为空心碳纳米棒的形成是由Ostwald熟化现象造成的. 当以葡萄糖或环糊精为碳前驱物时, 得到的是空心碳球, 这...
Cu-Pb偏晶合金的颗粒生长和Ostwald 熟化的相场法模拟
Cu--Pb过偏晶合金 相场法 Ostwald熟化
2008/12/10
采用计算效率和计算精度较高的Fourier变换谱分析方法求解Cahn-Hilliard相场方
程, 并耦合热力学数据, 对Cu-Pb过偏晶合金在等温情况下液相分离过程中的颗粒生长
和Ostwald 熟化进行了模拟研究. 结果表明, 合金体系中两液相区中的第二
相颗粒生长和Ostwald 熟化过程可以通过调节能量梯度系数和迁移率系数实现.
在过饱和基体中第二相单个颗粒生长的计算结果表明, 颗...
Wilhelm Ostwald at the Crossroads of Chemistry, Philosophy, and Media Culture, University of Leipzig, 2-4 November 2000
Wilhelm Ostwald Philosophy
2008/4/7
When Ostwald received the Nobel Prize of chemistry for his work on catalysis in 1909, he had already retired 3 years ago, at the age of 53, from his chair of physical chemistry at the University of Le...
Wilhelm Ostwald (1853-1932) was one of the most celebrated German scientists at the turn of the twentieth century. He gained an early reputation as a leading figure in the studies of chemical affinity...