Ending of Darken Equation and Intrinsic Diffusion Concept

• 作者: Takahisa Okino
• 来源期刊: 现代物理(英文)
• 学科: 数学
• 关键词: DARKEN EQUATION Kirkendall Effect INTRINSIC DIFFUSION Fickian First LAW
• 年，卷（期）: 2013,（11）
• 页码范围: 1495-1498
• 页数: 4页
• 分类号: O1

摘要

The well-known Darken equation has been widely accepted in analyzing interdiffusion problems since 1948. The diffusion researchers have never conceived a doubt about the validity of Darken equation for such a long time. However, it is revealed that the Darken equation is inconsistent with the fundamental theory in mathematics. At the same time, it is clarified that the well-known intrinsic diffusion concept is an illusion. The present brief report will have a great influence on matters of the research and education relevant to diffusion problems not only in future but also in past, since the accumulated diffusivity data analyzed by the invalid Darken theory and the misjudged descriptions in existing text books should be revised or deleted as soon as possible.